We are not releasing the link GPIO descriptor with gpiod_put() which results in
subsequent probing to get -EBUSY when calling fwnode_get_named_gpiod(). Fix this
by doing the release in phylink_destroy().
Fixes: 9525ae83959b ("phylink: add phylink infrastructure") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Inclusion of include/dma-iommu.h when CONFIG_IOMMU_DMA is not selected
results in the following splat:
In file included from drivers/irqchip/irq-gic-v3-mbi.c:20:0:
./include/linux/dma-iommu.h:95:69: error: unknown type name ‘dma_addr_t’
static inline int iommu_get_msi_cookie(struct iommu_domain *domain, dma_addr_t base)
^~~~~~~~~~
./include/linux/dma-iommu.h:108:74: warning: ‘struct list_head’ declared inside parameter list will not be visible outside of this definition or declaration
static inline void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list)
^~~~~~~~~
scripts/Makefile.build:312: recipe for target 'drivers/irqchip/irq-gic-v3-mbi.o' failed
Fix it by including linux/types.h.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Rob Herring <robh@kernel.org> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Cc: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lkml.kernel.org/r/20180508121438.11301-5-marc.zyngier@arm.com Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Unlike normal serials, in pty layer, there is no guarantee that multiple
threads don't insert input characters at the same time. If it is happened,
tty_insert_flip_string_fixed_flag can be executed concurrently. This can
lead slab out-of-bounds write in tty_insert_flip_string_fixed_flag.
Call sequences are as follows.
CPU0 CPU1
n_tty_ioctl_helper n_tty_ioctl_helper
__start_tty tty_send_xchar
tty_wakeup pty_write
n_hdlc_tty_wakeup tty_insert_flip_string
n_hdlc_send_frames tty_insert_flip_string_fixed_flag
pty_write
tty_insert_flip_string
tty_insert_flip_string_fixed_flag
To fix the race, acquire port->lock in pty_write() before it inserts input
characters to tty buffer. It prevents multiple threads from inserting
input characters concurrently.
The crash log is as follows:
BUG: KASAN: slab-out-of-bounds in tty_insert_flip_string_fixed_flag+0xb5/
0x130 drivers/tty/tty_buffer.c:316 at addr ffff880114fcc121
Write of size 1792 by task syz-executor0/30017
CPU: 1 PID: 30017 Comm: syz-executor0 Not tainted 4.8.0 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS rel-1.8.2-0-g33fbe13 by qemu-project.org 04/01/2014 0000000000000000ffff88011638f888ffffffff81694cc3ffff88007d802140 ffff880114fcb300ffff880114fcc300ffff880114fcb300ffff88011638f8b0 ffffffff8130075cffff88011638f940ffff88007d802140ffff880194fcc121
Call Trace:
__dump_stack lib/dump_stack.c:15 [inline]
dump_stack+0xb3/0x110 lib/dump_stack.c:51
kasan_object_err+0x1c/0x70 mm/kasan/report.c:156
print_address_description mm/kasan/report.c:194 [inline]
kasan_report_error+0x1f7/0x4e0 mm/kasan/report.c:283
kasan_report+0x36/0x40 mm/kasan/report.c:303
check_memory_region_inline mm/kasan/kasan.c:292 [inline]
check_memory_region+0x13e/0x1a0 mm/kasan/kasan.c:299
memcpy+0x37/0x50 mm/kasan/kasan.c:335
tty_insert_flip_string_fixed_flag+0xb5/0x130 drivers/tty/tty_buffer.c:316
tty_insert_flip_string include/linux/tty_flip.h:35 [inline]
pty_write+0x7f/0xc0 drivers/tty/pty.c:115
n_hdlc_send_frames+0x1d4/0x3b0 drivers/tty/n_hdlc.c:419
n_hdlc_tty_wakeup+0x73/0xa0 drivers/tty/n_hdlc.c:496
tty_wakeup+0x92/0xb0 drivers/tty/tty_io.c:601
__start_tty.part.26+0x66/0x70 drivers/tty/tty_io.c:1018
__start_tty+0x34/0x40 drivers/tty/tty_io.c:1013
n_tty_ioctl_helper+0x146/0x1e0 drivers/tty/tty_ioctl.c:1138
n_hdlc_tty_ioctl+0xb3/0x2b0 drivers/tty/n_hdlc.c:794
tty_ioctl+0xa85/0x16d0 drivers/tty/tty_io.c:2992
vfs_ioctl fs/ioctl.c:43 [inline]
do_vfs_ioctl+0x13e/0xba0 fs/ioctl.c:679
SYSC_ioctl fs/ioctl.c:694 [inline]
SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685
entry_SYSCALL_64_fastpath+0x1f/0xbd
In commit bbc4e7d273b5 ("i40e: fix race condition with PTP_TX_IN_PROGRESS
bits") we modified the code which handles Tx timestamps so that we would
clear the progress bit as soon as possible.
A later commit 0bc0706b46cd ("i40e: check for Tx timestamp timeouts during
watchdog") introduced similar code for detecting and handling cleanup of
a blocked Tx timestamp. This code did not use the same pattern for cleaning
up the skb.
Update this code to wait to free the skb until after the bit lock is
free, by first setting the ptp_tx_skb to NULL and clearing the lock.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Single child nodes in OF graph don't need an address and now dtc will
warn about this:
Warning (graph_child_address): /soc/aips@50000000/ldb@53fa8008/lvds-channel@0: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary
Since the LDB should always have an output port, fix the warning by
adding the output port, 2, to the DT.
Function nvmem_reg_read can return a non zero value indicating an error.
This returned value must be read and error propagated to
nvmem_cell_prepare_write_buffer. Silence the following gcc warning (W=1):
drivers/nvmem/core.c:1093:9: warning: variable 'rc' set but
not used [-Wunused-but-set-variable]
Since commit 83a86fbb5b56 ("irqchip/gic: Loudly complain about the use of IRQ_TYPE_NONE")
kernel is complaining about the IRQ_TYPE_NONE usage which shouldn't
be used.
Since commit 83a86fbb5b56 ("irqchip/gic: Loudly complain about the use of IRQ_TYPE_NONE")
kernel is complaining about the IRQ_TYPE_NONE usage which shouldn't
be used.
When the "poweroff" command is executed after wowlan enabled, we have
observed a system crash. In the system "poweroff" sequence, network-manager
is sent to inactive state by cleaning up the network interfaces, using
rsi_mac80211_remove_interface() and when driver tries to access those
network interfaces in rsi_wowlan_config() which was invoked by SDIO
shutdown, results in a crash. Added a NULL check before accessing the
network interfaces in rsi_wowlan_config().
The kbuild test robot reported the following warning:
drivers/edac/altera_edac.c: In function 'ocram_free_mem':
drivers/edac/altera_edac.c:1410:42: warning: cast from pointer to integer
of different size [-Wpointer-to-int-cast]
gen_pool_free((struct gen_pool *)other, (u32)p, size);
^
After adding support for ARM64 architectures, the unsigned long
parameter is 64 bits and causes a build warning on 64-bit configs. Fix
by casting to the correct size (unsigned long) instead of u32.
On many Chromebooks touch devices are multi-sourced; the components are
electrically compatible and one can be freely swapped for another without
changing the OS image or firmware.
To avoid bunch of scary messages when device is not actually present in the
system let's try testing basic communication with it and if there is no
response terminate probe early with -ENXIO.
The interrupt controller inside the Wii's Hollywood chip is connected to
two masters, the "Broadway" PowerPC and the "Starlet" ARM926, each with
their own interrupt status and mask registers.
When booting the Wii with mini[1], interrupts from the SD card
controller (IRQ 7) are handled by the ARM, because mini provides SD
access over IPC. Linux however can't currently use or disable this IPC
service, so both sides try to handle IRQ 7 without coordination.
Let's instead make sure that all interrupts that are unmasked on the PPC
side are masked on the ARM side; this will also make sure that Linux can
properly talk to the SD card controller (and potentially other devices).
If access to a device through IPC is desired in the future, interrupts
from that device should not be handled by Linux directly.
[1]: https://github.com/lewurm/mini
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Before programming the input gamma, check that we're not using the
identity correction.
Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com> Reviewed-by: Anthony Koo <Anthony.Koo@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This fixes an issue introduced by change "allow framebuffer in GART
memory as well" which could lead to a shared buffer ending up
pinned in vram. Use GTT if it is included in the domain, otherwise
return an error.
Signed-off-by: Samuel Li <Samuel.Li@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The method struct drm_connector_helper_funcs::mode_valid is defined
as returning an 'enum drm_mode_status' but the driver implementation
for this method uses an 'int' for it.
Fix this by using 'enum drm_mode_status' in the driver too.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch is in continuation to the
"843e3c7 drm/amd/display: defer modeset check in dm_update_planes_state"
where we started to eliminate the dependency on
DRM_MODE_ATOMIC_ALLOW_MODESET to be set by the user space,
which as such is not mandatory.
After deferring, this patch eliminates the dependency on the flag
for overlay planes.
This has to be done in stages as its a pretty complex and requires thorough
testing before we free primary planes as well from dependency on modeset
flag.
V2: Simplified the plane type check.
Signed-off-by: Shirish S <shirish.s@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Current Sound is using simple-audio-card which can't support HDMI.
To use HDMI sound, we need to use audio-graph-card.
But, one note is that r8a7795 has 2 HDMI ports, but r8a7796 has 1.
Because of this mismatch, supporting HDMI on salvator-common is
impossible.
Thus, this patch exchange sound card to audio-graph-card and keep
supporting ak4613 as 1st sound node.
r8a7795/r8a7796 salvator-x{s} need to add HDMI sound individually.
When waiting for a cacheline to change state in cmpwait, we may immediately
wake-up the first time around the outer loop if the event register was
already set (for example, because of the event stream).
Avoid these spurious wakeups by explicitly clearing the event register
before loading the cacheline and setting the exclusive monitor.
The register settings for several resolutions aren't used
currently. So, comment them out.
Fix those warnings:
In file included from drivers/staging/media/atomisp/i2c/atomisp-gc2235.c:35:0:
drivers/staging/media/atomisp/i2c/gc2235.h:340:32: warning: 'gc2235_960_640_30fps' defined but not used [-Wunused-const-variable=]
static struct gc2235_reg const gc2235_960_640_30fps[] = {
^~~~~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/gc2235.h:287:32: warning: 'gc2235_1296_736_30fps' defined but not used [-Wunused-const-variable=]
static struct gc2235_reg const gc2235_1296_736_30fps[] = {
^~~~~~~~~~~~~~~~~~~~~
In file included from drivers/staging/media/atomisp/i2c/atomisp-ov2722.c:35:0:
drivers/staging/media/atomisp/i2c/ov2722.h:999:32: warning: 'ov2722_720p_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2722_reg const ov2722_720p_30fps[] = {
^~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2722.h:787:32: warning: 'ov2722_1M3_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2722_reg const ov2722_1M3_30fps[] = {
^~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2722.h:476:32: warning: 'ov2722_VGA_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2722_reg const ov2722_VGA_30fps[] = {
^~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2722.h:367:32: warning: 'ov2722_480P_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2722_reg const ov2722_480P_30fps[] = {
^~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2722.h:257:32: warning: 'ov2722_QVGA_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2722_reg const ov2722_QVGA_30fps[] = {
^~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/atomisp-ov2680.c: In function '__ov2680_set_exposure':
In file included from drivers/staging/media/atomisp/i2c/atomisp-ov2680.c:35:0:
At top level:
drivers/staging/media/atomisp/i2c/ov2680.h:736:33: warning: 'ov2680_1616x1082_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2680_reg const ov2680_1616x1082_30fps[] = {
^~~~~~~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2680.h:649:33: warning: 'ov2680_1456x1096_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2680_reg const ov2680_1456x1096_30fps[]= {
^~~~~~~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2680.h:606:33: warning: 'ov2680_1296x976_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2680_reg const ov2680_1296x976_30fps[] = {
^~~~~~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2680.h:563:33: warning: 'ov2680_720p_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2680_reg const ov2680_720p_30fps[] = {
^~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2680.h:520:33: warning: 'ov2680_800x600_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2680_reg const ov2680_800x600_30fps[] = {
^~~~~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2680.h:475:33: warning: 'ov2680_720x592_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2680_reg const ov2680_720x592_30fps[] = {
^~~~~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2680.h:433:33: warning: 'ov2680_656x496_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2680_reg const ov2680_656x496_30fps[] = {
^~~~~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2680.h:389:33: warning: 'ov2680_QVGA_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2680_reg const ov2680_QVGA_30fps[] = {
^~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2680.h:346:33: warning: 'ov2680_CIF_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2680_reg const ov2680_CIF_30fps[] = {
^~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov2680.h:301:33: warning: 'ov2680_QCIF_30fps' defined but not used [-Wunused-const-variable=]
static struct ov2680_reg const ov2680_QCIF_30fps[] = {
^~~~~~~~~~~~~~~~~
In file included from drivers/staging/media/atomisp/i2c/ov5693/atomisp-ov5693.c:36:0:
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:988:32: warning: 'ov5693_1424x1168_30fps' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_1424x1168_30fps[] = {
^~~~~~~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:954:32: warning: 'ov5693_2592x1944_30fps' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_2592x1944_30fps[] = {
^~~~~~~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:889:32: warning: 'ov5693_2592x1456_30fps' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_2592x1456_30fps[] = {
^~~~~~~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:862:32: warning: 'ov5693_1940x1096' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_1940x1096[] = {
^~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:796:32: warning: 'ov5693_1636p_30fps' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_1636p_30fps[] = {
^~~~~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:758:32: warning: 'ov5693_1296x736' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_1296x736[] = {
^~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:730:32: warning: 'ov5693_976x556' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_976x556[] = {
^~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:672:32: warning: 'ov5693_736x496' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_736x496[] = {
^~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:643:32: warning: 'ov5693_192x160' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_192x160[] = {
^~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:616:32: warning: 'ov5693_368x304' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_368x304[] = {
^~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:587:32: warning: 'ov5693_336x256' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_336x256[] = {
^~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:540:32: warning: 'ov5693_1296x976' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_1296x976[] = {
^~~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/ov5693/ov5693.h:509:32: warning: 'ov5693_654x496' defined but not used [-Wunused-const-variable=]
static struct ov5693_reg const ov5693_654x496[] = {
^~~~~~~~~~~~~~
drivers/staging/media/atomisp/i2c/atomisp-ov2680.c: In function ‘__ov2680_set_exposure’:
drivers/staging/media/atomisp/i2c/atomisp-ov2680.c:400:10: warning: variable ‘hts’ set but not used [-Wunused-but-set-variable]
u16 vts,hts;
^~~
drivers/staging/media/atomisp/i2c/atomisp-ov2680.c: In function ‘ov2680_detect’:
drivers/staging/media/atomisp/i2c/atomisp-ov2680.c:1164:5: warning: variable ‘revision’ set but not used [-Wunused-but-set-variable]
u8 revision;
^~~~~~~~
When hclge_ae_start is called, hdev->hw.mac.link may be set
to one after up/down multi-times, which does not correspond to
the link state of netdev when the netdev is up.
This fixes it by setting hdev->hw.mac.link to zero when
hclge_ae_start is called.
Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
retire_capture_urb() may print warning messages when the given URB
doesn't align, and this may flood the system log easily.
Put the rate limit to the message for avoiding it.
This fixes klockworks warnings: Pointer 'dev' returned from call to
function 'bus_find_device' at line 179 may be NULL and will be dereferenced
at line 181.
cpsw-phy-sel.c:179: 'dev' is assigned the return value from function 'bus_find_device'.
bus.c:342: 'bus_find_device' explicitly returns a NULL value.
cpsw-phy-sel.c:181: 'dev' is dereferenced by passing argument 1 to function 'dev_get_drvdata'.
device.h:1024: 'dev' is passed to function 'dev_get_drvdata'.
device.h:1026: 'dev' is explicitly dereferenced.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
[nsekhar@ti.com: add an error message, fix return path] Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The inline keyword was not at the beginning of the function declarations.
Fix the following warnings triggered when using W=1:
kernel/time/clocksource.c:456:1: warning: ‘inline’ is not at beginning of declaration [-Wold-style-declaration]
kernel/time/clocksource.c:457:1: warning: ‘inline’ is not at beginning of declaration [-Wold-style-declaration]
Signed-off-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Stephen Boyd <sboyd@kernel.org> Cc: John Stultz <john.stultz@linaro.org> Link: https://lkml.kernel.org/r/20180516195943.31924-1-malat@debian.org Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The generic IRQ handling code ensures that an interrupt handler runs with
its interrupt masked or disabled. If the interrupt is level-triggered, the
interrupt handler must tell its device to stop asserting the interrupt
before returning. If it doesn't, we will immediately take the interrupt
again when the handler returns and the generic code unmasks the interrupt.
The driver doesn't know whether its interrupt is edge- or level-triggered,
so it must clear its interrupt source directly in its interrupt handler.
Previously we cleared the DPC interrupt status in the bottom half, i.e., in
deferred work, which can cause an interrupt storm if the DPC interrupt
happens to be level-triggered, e.g., if we're using INTx instead of MSI.
Clear the DPC interrupt status bit in the interrupt handler, not in the
deferred work.
The current code decrements the timeout counter i and the end of
each loop i is incremented, so the check for timeout will always
be false and hence the timeout mechanism is just a dead code path.
Potentially, if the RD_READY bit is not set, we could end up in
an infinite loop.
Fix this so the timeout starts from 1000 and decrements to zero,
if at the end of the loop i is zero we have a timeout condition.
Detected by CoverityScan, CID#1324008 ("Logically dead code")
Fixes: ccfc97bdb5ae ("[media] smiapp: Add driver") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The IOVA API uses a memory cache to allocate IOVA nodes from. To make
sure that this cache is available, obtain a reference to it and release
the reference when the cache is no longer needed.
On 64-bit ARM this is hidden by the fact that the DMA mapping API gets
that reference and never releases it. On 32-bit ARM, this is papered
over by the Tegra DRM driver (the sole user of the host1x API requiring
the cache) acquiring a reference to the IOVA cache for its own purposes.
However, there may be additional users of this API in the future, so fix
this upfront to avoid surprises.
For raid6, when two disk of the array are offline, two spare disks can
be added into the array. Before spare disks recovery completing,
system reboot and mdadm thinks it is ok to restart the degraded
array by md_ioctl(). Since disks in raid6 is not only_parity(),
raid5_run() will abort, when there is no PPL feature or not setting
'start_dirty_degraded' parameter. Therefore, mddev->pers is NULL.
But, mddev->raid_disks has been set and it will not be cleared when
raid5_run abort. md_ioctl() can execute cmd 'HOT_REMOVE_DISK' to
remove a disk by mdadm, which will cause NULL pointer dereference
in remove_and_add_spares() finally.
Current handle_read_error() function calls fix_read_error()
only if md device is RW and rdev does not include FailFast flag.
It does not handle a read error from a RW device including
FailFast flag.
I am not sure it is intended. But I found that write IO error
sets rdev faulty. The md module should handle the read IO error and
write IO error equally. So I think read IO error should set rdev faulty.
Signed-off-by: Gioh Kim <gi-oh.kim@profitbricks.com> Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The error messages at sanity checks of memory pages tend to repeat too
many times once when it hits, and without the rate limit, it may flood
and become unreadable. Replace such messages with the *_ratelimited()
variant.
The IRQ is requested before the struct rtc is allocated and registered, but
this struct is used in the IRQ handler. This may lead to a NULL pointer
dereference.
Switch to devm_rtc_allocate_device/rtc_register_device to allocate the rtc
before requesting the IRQ.
Fences attached to deferred client work items now originate from channels
belonging to the client, meaning we can be certain they've been signalled
before we destroy a client.
This closes a race that could happen if the dma_fence_wait_timeout() call
didn't succeed. When the fence was later signalled, a use-after-free was
possible.
Otherwise iterating with list_for_each() over the adapter->erp_ready_head
and adapter->erp_running_head lists can lead to an infinite loop. See commit
"zfcp: fix infinite iteration on erp_ready_head list".
The run-time check is only performed for debug kernels which have the kernel
lock validator enabled. Following is an example of the warning that is
reported, if the ERP lock is not held when calling zfcp_dbf_rec_trig():
The device can set the exception event bit in one of the response UPIU,
for example to notify the need for urgent BKOPs operation. In such a
case, the host driver calls ufshcd_exception_event_handler to handle
this notification. When trying to check the exception event status (for
finding the cause for the exception event), the device may be busy with
additional SCSI commands handling and may not respond within the 100ms
timeout.
To prevent that, we need to block SCSI commands during handling of
exception events and allow retransmissions of the query requests, in
case of timeout.
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Maya Erez <merez@codeaurora.org> Signed-off-by: Can Guo <cang@codeaurora.org> Signed-off-by: Asutosh Das <asutoshd@codeaurora.org> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vendor specific setup_clocks ops may depend on clocks managed by ufshcd
driver so if the vendor specific setup_clocks callback is called when
the required clocks are turned off, it results into unclocked register
access.
This change make sure that required clocks are enabled before vendor
specific setup_clocks callback is called.
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org> Signed-off-by: Can Guo <cang@codeaurora.org> Signed-off-by: Asutosh Das <asutoshd@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Marvell PPv2 Header Parser sets some bits in the 'result_info' field in
each lookup iteration, to identify different packet attributes such as
DSA / VLAN tag, protocol infos, etc. This is used in further
classification stages in the controller.
It's the DSA tag detection entry that is in charge of detecting when there
is a single VLAN tag.
This commits adds the missing update of the result_info in this case.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Improve fscrypt read performance by switching the decryption workqueue
from bound to unbound. With the bound workqueue, when multiple bios
completed on the same CPU, they were decrypted on that same CPU. But
with the unbound queue, they are now decrypted in parallel on any CPU.
Although fscrypt read performance can be tough to measure due to the
many sources of variation, this change is most beneficial when
decryption is slow, e.g. on CPUs without AES instructions. For example,
I timed tarring up encrypted directories on f2fs. On x86 with AES-NI
instructions disabled, the unbound workqueue improved performance by
about 25-35%, using 1 to NUM_CPUs jobs with 4 or 8 CPUs available. But
with AES-NI enabled, performance was unchanged to within ~2%.
I also did the same test on a quad-core ARM CPU using xts-speck128-neon
encryption. There performance was usually about 10% better with the
unbound workqueue, bringing it closer to the unencrypted speed.
The unbound workqueue may be worse in some cases due to worse locality,
but I think it's still the better default. dm-crypt uses an unbound
workqueue by default too, so this change makes fscrypt match.
This patch fixes it by adding module version info.
Fixes: 38caee9d3ee8 ("net: hns3: Add support of the HNAE3 framework") Signed-off-by: Xi Wang <wangxi11@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes the missing initialization of the client list node
in the hnae3_register_client() function.
Fixes: 76ad4f0ee747 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC") Signed-off-by: Xi Wang <wangxi11@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When vf module is loading, the cmd queue initialization should
happen before misc interrupt initialization, otherwise the misc
interrupt handle will cause using uninitialized cmd queue problem.
There is also the same issue when vf module is unloading.
This patch fixes it by adjusting the location of some function.
Fixes: e2cb1dec9779 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If pm_runtime_get_sync() fails we should call pm_runtime_put_noidle().
This is probably not a critical fix as we should only hit this when
things are broken elsewhere.
Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The ARM CCN PMU driver uses dev_warn() to complain about parameters in
the user-provided perf_event_attr. This means that under normal
operation (e.g. a single invocation of the perf tool), a number of
messages warnings may be logged to dmesg.
Tools may issue multiple syscalls to probe for feature support, and
multiple applications (from multiple users) can attempt to open events
simultaneously, so this is not very helpful, even if a user happens to
have access to dmesg. Worse, this can push important information out of
the dmesg ring buffer, and can significantly slow down syscall fuzzers,
vastly increasing the time it takes to find critical bugs.
Demote the dev_warn() instances to dev_dbg(), as is the case for all
other PMU drivers under drivers/perf/. Users who wish to debug PMU event
initialisation can enable dynamic debug to receive these messages.
Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
According to 802.11-2007 17.3.8.6 (slot time), the slot time should
be increased by 3 us * coverage class. Taking into account coverage
class in slot time configuration allows to increase by an order of
magnitude the throughput on a 4Km link in a noisy environment
Tested-by: Luca Bisti <luca.bisti@gmail.com> Tested-by: Gaetano Catalli <gaetano.catalli@gmail.com> Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Acked-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add support for the four-port variant of the Qualcomm QCA833x switch.
Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently we request control of native PCIe hotplug unconditionally.
Native PCIe hotplug events are handled by the pciehp driver, and if it is
not enabled those events will be lost.
Request control of native PCIe hotplug only if the pciehp driver is
enabled, so we will actually handle native PCIe hotplug events.
Suggested-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
For multi-function programs, loading the address of a callee
function to a register requires emitting instructions whose
count varies from one to five depending on the nature of the
address.
Since we come to know of the callee's address only before the
extra pass, the number of instructions required to load this
address may vary from what was previously generated. This can
make the JITed image grow or shrink.
To avoid this, we should generate a constant five-instruction
when loading function addresses by padding the optimized load
sequence with NOPs.
Signed-off-by: Sandipan Das <sandipan@linux.vnet.ibm.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently, for multi-function programs, we cannot get the JITed
instructions using the bpf system call's BPF_OBJ_GET_INFO_BY_FD
command. Because of this, userspace tools such as bpftool fail
to identify a multi-function program as being JITed or not.
With the JIT enabled and the test program running, this can be
verified as follows:
# cat /proc/sys/net/core/bpf_jit_enable
1
Before applying this patch:
# bpftool prog list
1: kprobe name foo tag b811aab41a39ad3d gpl
loaded_at 2018-05-16T11:43:38+0530 uid 0
xlated 216B not jited memlock 65536B
...
# bpftool prog dump jited id 1
no instructions returned
After applying this patch:
# bpftool prog list
1: kprobe name foo tag b811aab41a39ad3d gpl
loaded_at 2018-05-16T12:13:01+0530 uid 0
xlated 216B jited 308B memlock 65536B
...
Sven Eckelmann reported an issue with the current IPQ4019 pinctrl.
Setting up any gpio-hog in the device-tree for his device would
"kill the bootup completely":
| [ 0.477838] msm_serial 78af000.serial: could not find pctldev for node /soc/pinctrl@1000000/serial_pinmux, deferring probe
| [ 0.499828] spi_qup 78b5000.spi: could not find pctldev for node /soc/pinctrl@1000000/spi_0_pinmux, deferring probe
| [ 1.298883] requesting hog GPIO enable USB2 power (chip 1000000.pinctrl, offset 58) failed, -517
| [ 1.299609] gpiochip_add_data: GPIOs 0..99 (1000000.pinctrl) failed to register
| [ 1.308589] ipq4019-pinctrl 1000000.pinctrl: Failed register gpiochip
| [ 1.316586] msm_serial 78af000.serial: could not find pctldev for node /soc/pinctrl@1000000/serial_pinmux, deferring probe
| [ 1.322415] spi_qup 78b5000.spi: could not find pctldev for node /soc/pinctrl@1000000/spi_0_pinmux, deferri
This was also verified on a RT-AC58U (IPQ4018) which would
no longer boot, if a gpio-hog was specified. (Tried forcing
the USB LED PIN (GPIO0) to high.).
The problem is that Pinctrl+GPIO registration is currently
peformed in the following order in pinctrl-msm.c:
1. pinctrl_register()
2. gpiochip_add()
3. gpiochip_add_pin_range()
The actual error code -517 == -EPROBE_DEFER is coming from
pinctrl_get_device_gpio_range(), which is called through:
gpiochip_add
of_gpiochip_add
of_gpiochip_scan_gpios
gpiod_hog
gpiochip_request_own_desc
__gpiod_request
chip->request
gpiochip_generic_request
pinctrl_gpio_request
pinctrl_get_device_gpio_range
pinctrl_get_device_gpio_range() is unable to find any valid
pin ranges, since nothing has been added to the pinctrldev_list yet.
so the range can't be found, and the operation fails with -EPROBE_DEFER.
This patch fixes the issue by adding the "gpio-ranges" property to
the pinctrl device node of all upstream Qcom SoC. The pin ranges are
then added by the gpio core.
In order to remain compatible with older, existing DTs (and ACPI)
a check for the "gpio-ranges" property has been added to
msm_gpio_init(). This prevents the driver of adding the same entry
to the pinctrldev_list twice.
Reported-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Tested-by: Sven Eckelmann <sven.eckelmann@openmesh.com> [ipq4019] Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
According to section 59.2.4 MSIOF Receive Mode Register 1 (SIRMDR1) in
the R-Car Gen3 datasheet Rev.1.00, the value of the SIRMDR1.SYNCAC bit
must match the value of the SITMDR1.SYNCAC bit. However,
sh_msiof_spi_setup() changes only the latter.
Fix this by updating the SIRMDR1 register like the SITMDR1 register,
taking into account register bits that exist in SITMDR1 only.
Reported-by: Renesas BSP team via Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Fixes: 7ff0b53c4051145d ("spi: sh-msiof: Avoid writing to registers from spi_master.setup()") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is a fix from reviewing the code, but it looks like it might be
able to lead to an Oops. It affects 32bit systems.
The KVM_MEMORY_ENCRYPT_REG_REGION ioctl uses a u64 for range->addr and
range->size but the high 32 bits would be truncated away on a 32 bit
system. This is harmless but it's also harmless to prevent it.
Then in sev_pin_memory() the "uaddr + ulen" calculation can wrap around.
The wrap around can happen on 32 bit or 64 bit systems, but I was only
able to figure out a problem for 32 bit systems. We would pick a number
which results in "npages" being zero. The sev_pin_memory() would then
return ZERO_SIZE_PTR without allocating anything.
I made it illegal to call sev_pin_memory() with "ulen" set to zero.
Hopefully, that doesn't cause any problems. I also changed the type of
"first" and "last" to long, just for cosmetic reasons. Otherwise on a
64 bit system you're saving "uaddr >> 12" in an int and it truncates the
high 20 bits away. The math works in the current code so far as I can
see but it's just weird.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
[Brijesh noted that the code is only reachable on X86_64.] Reviewed-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
__printf is useful to verify format and arguments. Fix arg mismatch
reported by gcc, remove the following warnings (with W=1):
arch/powerpc/kernel/prom_init.c:1467:31: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:1471:31: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:1504:33: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:1505:33: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:1506:33: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:1507:33: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:1508:33: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:1509:33: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:1975:39: error: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 2 has type ‘unsigned int’
arch/powerpc/kernel/prom_init.c:1986:27: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:2567:38: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:2567:46: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 3 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:2569:38: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 2 has type ‘long unsigned int’
arch/powerpc/kernel/prom_init.c:2569:46: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 3 has type ‘long unsigned int’
The patch also include arg mismatch fix for case with #define DEBUG_PROM
(warning not listed here).
This patch fix also the following warnings revealed by checkpatch:
WARNING: Prefer using '"%s...", __func__' to using 'alloc_up', this function's name, in a string
#101: FILE: arch/powerpc/kernel/prom_init.c:1235:
+ prom_debug("alloc_up(%lx, %lx)\n", size, align);
and
WARNING: Prefer using '"%s...", __func__' to using 'alloc_down', this function's name, in a string
#138: FILE: arch/powerpc/kernel/prom_init.c:1278:
+ prom_debug("alloc_down(%lx, %lx, %s)\n", size, align,
These functions can all be static, make it so. Fix warnings treated as
errors with W=1:
arch/powerpc/platforms/chrp/time.c:41:13: error: no previous prototype for ‘chrp_time_init’ [-Werror=missing-prototypes]
arch/powerpc/platforms/chrp/time.c:66:5: error: no previous prototype for ‘chrp_cmos_clock_read’ [-Werror=missing-prototypes]
arch/powerpc/platforms/chrp/time.c:74:6: error: no previous prototype for ‘chrp_cmos_clock_write’ [-Werror=missing-prototypes]
arch/powerpc/platforms/chrp/time.c:86:5: error: no previous prototype for ‘chrp_set_rtc_time’ [-Werror=missing-prototypes]
arch/powerpc/platforms/chrp/time.c:130:6: error: no previous prototype for ‘chrp_get_rtc_time’ [-Werror=missing-prototypes]
we aggregate FAIR utilization only if this class has runnable tasks.
This was mainly due to avoid the risk to stay on an high frequency just
because of the blocked utilization of a CPU not being properly decayed
while the CPU was idle.
However, since:
commit 31e77c93e432 ("sched/fair: Update blocked load when newly idle")
the FAIR blocked utilization is properly decayed also for IDLE CPUs.
This allows us to use the FAIR blocked utilization as a safe mechanism
to gracefully reduce the frequency only if no FAIR tasks show up on a
CPU for a reasonable period of time.
Moreover, we also reduce the frequency drops of CPUs running periodic
tasks which, depending on the task periodicity and the time required
for a frequency switch, was increasing the chances to introduce some
undesirable performance variations.
Reported-by: Vincent Guittot <vincent.guittot@linaro.org> Tested-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Vincent Guittot <vincent.guittot@linaro.org> Cc: Dietmar Eggemann <dietmar.eggemann@arm.com> Cc: Joel Fernandes <joelaf@google.com> Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Morten Rasmussen <morten.rasmussen@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J . Wysocki <rafael.j.wysocki@intel.com> Cc: Steve Muckle <smuckle@google.com> Link: http://lkml.kernel.org/r/20180524141023.13765-2-patrick.bellasi@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The country code is used by the ath to detect the ISO 3166-1 alpha-2 name
and to select the correct conformance test limits (CTL) for a country. If
the country isn't available and it is still programmed in the EEPROM then
it will cause an error and stop the initialization with:
Invalid EEPROM contents
The current CTL mappings for this country are:
* 2.4GHz: ETSI
* 5GHz: FCC
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The country code is used by the ath to detect the ISO 3166-1 alpha-2 name
and to select the correct conformance test limits (CTL) for a country. If
the country isn't available and it is still programmed in the EEPROM then
it will cause an error and stop the initialization with:
Invalid EEPROM contents
The current CTL mappings for this country are:
* 2.4GHz: FCC
* 5GHz: FCC
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The country code is used by the ath to detect the ISO 3166-1 alpha-2 name
and to select the correct conformance test limits (CTL) for a country. If
the country isn't available and it is still programmed in the EEPROM then
it will cause an error and stop the initialization with:
Invalid EEPROM contents
The current CTL mappings for this country are:
* 2.4GHz: ETSI
* 5GHz: ETSI
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The country code is used by the ath to detect the ISO 3166-1 alpha-2 name
and to select the correct conformance test limits (CTL) for a country. If
the country isn't available and it is still programmed in the EEPROM then
it will cause an error and stop the initialization with:
Invalid EEPROM contents
The current CTL mappings for this country are:
* 2.4GHz: ETSI
* 5GHz: FCC
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The country code is used by the ath to detect the ISO 3166-1 alpha-2 name
and to select the correct conformance test limits (CTL) for a country. If
the country isn't available and it is still programmed in the EEPROM then
it will cause an error and stop the initialization with:
Invalid EEPROM contents
The current CTL mappings for this country are:
* 2.4GHz: ETSI
* 5GHz: FCC
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The regdomain code is used to select the correct the correct conformance
test limits (CTL) for a country. If the regdomain code isn't available and
it is still programmed in the EEPROM then it will cause an error and stop
the initialization with:
Invalid EEPROM contents
The current CTL mappings for this regdomain code are:
* 2.4GHz: FCC
* 5GHz: FCC
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The regdomain code is used to select the correct the correct conformance
test limits (CTL) for a country. If the regdomain code isn't available and
it is still programmed in the EEPROM then it will cause an error and stop
the initialization with:
Invalid EEPROM contents
The current CTL mappings for this regdomain code are:
* 2.4GHz: ETSI
* 5GHz: ETSI
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The regdomain code is used to select the correct the correct conformance
test limits (CTL) for a country. If the regdomain code isn't available and
it is still programmed in the EEPROM then it will cause an error and stop
the initialization with:
Invalid EEPROM contents
The current CTL mappings for this regdomain code are:
* 2.4GHz: ETSI
* 5GHz: ETSI
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The regdomain code is used to select the correct the correct conformance
test limits (CTL) for a country. If the regdomain code isn't available and
it is still programmed in the EEPROM then it will cause an error and stop
the initialization with:
Invalid EEPROM contents
The current CTL mappings for this regdomain code are:
* 2.4GHz: ETSI
* 5GHz: FCC
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The nvme timeout handling doesn't do anything if the pci channel is
offline, which is the case when recovering from PCI error event, so it
was a bad idea to sync the controller reset in this state. This patch
flushes the reset work in the error_resume callback instead when the
channel is back to online. This keeps AER handling serialized and
can recover from timeouts.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=199757 Fixes: cc1d5e749a2e ("nvme/pci: Sync controller reset for AER slot_reset") Reported-by: Alex Gagniuc <mr.nuke.me@gmail.com> Tested-by: Alex Gagniuc <mr.nuke.me@gmail.com> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
For any failure after nvme_rdma_start_queue in
nvme_rdma_configure_admin_queue, the admin queue will be freed with the
NVME_RDMA_Q_LIVE flag still set. Once nvme_rdma_stop_queue is invoked,
that will cause a use-after-free.
BUG: KASAN: use-after-free in rdma_disconnect+0x1f/0xe0 [rdma_cm]
To fix it, call nvme_rdma_stop_queue for all the failed cases after
nvme_rdma_start_queue.
Signed-off-by: Jianchao Wang <jianchao.w.wang@oracle.com> Suggested-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Two places report an error when a partition header is found to
not contain the right canary value. The error messages do not
properly byte swap the host ids. Fix this, and adjust the format
specificier to match the 16-bit unsigned data type.
Move the error handling for a bad canary value to the end of
qcom_smem_alloc_private(). This avoids some long lines, and
reduces the distraction of handling this unexpected problem.
Signed-off-by: Alex Elder <elder@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If there is at least one entry in the partition table, but no global
entry, the qcom_smem_set_global_partition() should return an error
just like it does if there are no partition table entries.
It turns out the function still returns an error in this case, but
it waits to do so until it has mistakenly treated the last entry in
the table as if it were the global entry found.
Fix the function to return immediately if no global entry is found
in the table.
Signed-off-by: Alex Elder <elder@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In qmi_handle_init(), a buffer is allocated for to hold messages
received through the handle's socket. Any "normal" messages
(expected by the caller) will have a header prepended, so the
buffer size is adjusted to accomodate that.
The buffer must also be of sufficient size to receive control
messages, so the size is increased if necessary to ensure these
will fit.
Unfortunately the calculation is done wrong, making it possible
for the calculated buffer size to be too small to hold a "normal"
message. Specifically, if:
the current logic will use sizeof(struct qrtr_ctrl_pkt) as the
receive buffer size, which is not enough to hold the maximum
"normal" message plus its header. Currently this problem occurs
for (13 < recv_buf_size < 20).
This patch corrects this.
Signed-off-by: Alex Elder <elder@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The `s2idle_lock' is acquired during suspend while interrupts are
disabled even on RT. The lock is acquired for short sections only.
Make it a RAW lock which avoids "sleeping while atomic" warnings on RT.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Under the following case, qgroup rescan can double account cowed tree
blocks:
In this case, extent tree only has one tree block.
-
| transid=5 last committed=4
| btrfs_qgroup_rescan_worker()
| |- btrfs_start_transaction()
| | transid = 5
| |- qgroup_rescan_leaf()
| |- btrfs_search_slot_for_read() on extent tree
| Get the only extent tree block from commit root (transid = 4).
| Scan it, set qgroup_rescan_progress to the last
| EXTENT/META_ITEM + 1
| now qgroup_rescan_progress = A + 1.
|
| fs tree get CoWed, new tree block is at A + 16K
| transid 5 get committed
-
| transid=6 last committed=5
| btrfs_qgroup_rescan_worker()
| btrfs_qgroup_rescan_worker()
| |- btrfs_start_transaction()
| | transid = 5
| |- qgroup_rescan_leaf()
| |- btrfs_search_slot_for_read() on extent tree
| Get the only extent tree block from commit root (transid = 5).
| scan it using qgroup_rescan_progress (A + 1).
| found new tree block beyong A, and it's fs tree block,
| account it to increase qgroup numbers.
-
In above case, tree block A, and tree block A + 16K get accounted twice,
while qgroup rescan should stop when it already reach the last leaf,
other than continue using its qgroup_rescan_progress.
Such case could happen by just looping btrfs/017 and with some
possibility it can hit such double qgroup accounting problem.
Fix it by checking the path to determine if we should finish qgroup
rescan, other than relying on next loop to exit.
Reported-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently the code assumes that there's an implied barrier by the
sequence of code preceding the wakeup, namely the mutex unlock.
As Nikolay pointed out:
I think this is wrong (not your code) but the original assumption that
the RELEASE semantics provided by mutex_unlock is sufficient.
According to memory-barriers.txt:
Section 'LOCK ACQUISITION FUNCTIONS' states:
(2) RELEASE operation implication:
Memory operations issued before the RELEASE will be completed before the
RELEASE operation has completed.
Memory operations issued after the RELEASE *may* be completed before the
RELEASE operation has completed.
In btrfs_evict_inode(), if btrfs_truncate_inode_items() fails, the inode
item will still be in the tree but we still return the ino to the ino
cache. That will blow up later when someone tries to allocate that ino,
so don't return it to the cache.
Fixes: 581bb050941b ("Btrfs: Cache free inode numbers in memory") Reviewed-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When a buffer is queued or requeued in vb2_buffer_done, then don't
call the finish memop. In this case the buffer is only returned to vb2,
not to userspace.
Calling 'finish' here will cause an unbalance when the queue is
canceled, since the core will call the same memop again.
The current logic makes Smatch to false-detect a Spectre variant 1
vulnerability. The problem is that it initializes an u32 indirectly
from user space input.
After trying to write a fixup, after a while I realized that, in
practice, this shouldn't be a problem, as an u32 is initialized
from u8, but it took some time to discover it.
So, do some code cleanup to make it clearer for both humans
and machines about the valid range for "op".
Fix this warning:
drivers/media/cec/cec-pin-error-inj.c:170 cec_pin_error_inj_parse_line() warn: potential spectre issue 'pin->error_inj_args'
When the driver is configured in the "memcpy" dma-mode,
it uses vb2_vmalloc_memops, which is backed by a SLAB
allocator and so shouldn't be using GFP_DMA32.
RX Buffer Descriptor contains a VALID bit which indicates if the BD
is valid and has some data. This field is set by HNS3 hardware to
intimate the driver of some valid data present in the BD. nd should
be reset by the driver when BD is being used again. In the existing
code this bit was not being (re-)initialized properly and hence was
causing problems.
Fixes: 76ad4f0ee747 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC") Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When register a RoCE client with hnae3vf device, it needs to judge
the device whether support RoCE vf function. Otherwise, it will
lead to calltrace when RoCE is not support vf function and remove
roce device.
the wl pointer can be null In case only wlcore_sdio is probed while
no WiLink module is successfully probed, as in the case of mounting a
wl12xx module while using a device tree file configured with wl18xx
related settings.
In this case the system was crashing in wl1271_suspend() as platform
device data is not set.
Make sure wl the pointer is valid before using it.
Signed-off-by: Eyal Reizer <eyalr@ti.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
projects / thirdparty / kernel / stable.git / log
