Binbin Zhou [Sat, 11 Oct 2025 07:16:48 +0000 (15:16 +0800)]
serial: 8250: Add Loongson uart driver support
Add the driver for on-chip UART used on Loongson family chips.
The hardware is similar to NS16550A, but there are the following
differences:
- Some chips (such as Loongson-2K2000) have added a fractional division
register to obtain the required baud rate accurately, so the
{get,set}_divisor callback is overridden.
- Due to hardware defects, quirk handling is required for
UART_MCR/UART_MSR.
The Loongson family have a mostly NS16550A-compatible UART and
High-Speed UART hardware with the exception of custom frequency divider
latch settings register.
Gerhard Engleder [Thu, 23 Oct 2025 15:12:29 +0000 (17:12 +0200)]
serial: 8250: add driver for KEBA UART
The KEBA UART is found in the system FPGA of KEBA PLC devices. It is
mostly 8250 compatible with extension for some UART modes.
3 different variants exist. The simpliest variant supports only RS-232
and is used for debug interfaces. The next variant supports only RS-485
and is used mostly for communication with KEBA panel devices. The third
variant is able to support RS-232, RS-485 and RS-422. For this variant
not only the mode of the UART is configured, also the physics and
transceivers are switched according to the mode.
Gerhard Engleder [Thu, 23 Oct 2025 15:12:28 +0000 (17:12 +0200)]
serial: Keep rs485 settings for devices without firmware node
Commit fe7f0fa43cef ("serial: 8250: Support rs485 devicetree properties")
retrieves rs485 properties for 8250 drivers. These properties are read
from the firmware node of the device within uart_get_rs485_mode(). If the
firmware node does not exist, then the rs485 flags are still reset. Thus,
8250 driver cannot set rs485 flags to enable a defined rs485 mode during
driver loading. This is no problem so far, as no 8250 driver sets the
rs485 flags.
The default rs485 mode can also be set by firmware nodes. But for some
devices a firmware node does not exist. E.g., for a PCIe based serial
interface on x86 no device tree is available and the ACPI information of
the BIOS often cannot by modified. In this case it shall be possible,
that a driver works out of the box by setting a reasonable default rs485
mode.
If no firmware node exists, then it should be possible for the driver to
set a reasonable default rs485 mode. Therefore, reset rs485 flags only
if a firmware node exists.
Praveen Talari [Mon, 10 Nov 2025 10:10:43 +0000 (15:40 +0530)]
serial: qcom-geni: Enable Serial on SA8255p Qualcomm platforms
The Qualcomm automotive SA8255p SoC relies on firmware to configure
platform resources, including clocks, interconnects and TLMM.
The driver requests resources operations over SCMI using power
and performance protocols.
The SCMI power protocol enables or disables resources like clocks,
interconnect paths, and TLMM (GPIOs) using runtime PM framework APIs,
such as resume/suspend, to control power states(on/off).
The SCMI performance protocol manages UART baud rates, with each baud
rate represented by a performance level. The driver uses the
dev_pm_opp_set_level() API to request the desired baud rate by
specifying the performance level.
Praveen Talari [Mon, 10 Nov 2025 10:10:42 +0000 (15:40 +0530)]
serial: qcom-geni: Enable PM runtime for serial driver
The GENI serial driver currently handles power resource management
through calls to the statically defined geni_serial_resources_on() and
geni_serial_resources_off() functions. This approach reduces modularity
and limits support for platforms with diverse power management
mechanisms, including resource managed by firmware.
Improve modularity and enable better integration with platform-specific
power management, introduce support for runtime PM. Use
pm_runtime_resume_and_get() and pm_runtime_put_sync() within the
qcom_geni_serial_pm() callback to control resource power state
transitions based on UART power state changes.
Wenhua Lin [Wed, 22 Oct 2025 03:08:40 +0000 (11:08 +0800)]
serial: sprd: Return -EPROBE_DEFER when uart clock is not ready
In sprd_clk_init(), when devm_clk_get() returns -EPROBE_DEFER
for either uart or source clock, we should propagate the
error instead of just warning and continuing with NULL clocks.
Currently the driver only emits a warning when clock acquisition
fails and proceeds with NULL clock pointers. This can lead to
issues later when the clocks are actually needed. More importantly,
when the clock provider is not ready yet and returns -EPROBE_DEFER,
we should return this error to allow deferred probing.
This change adds explicit checks for -EPROBE_DEFER after both:
1. devm_clk_get(uport->dev, uart)
2. devm_clk_get(uport->dev, source)
When -EPROBE_DEFER is encountered, the function now returns
-EPROBE_DEFER to let the driver framework retry probing
later when the clock dependencies are resolved.
Sam Protsenko [Tue, 18 Nov 2025 02:48:22 +0000 (20:48 -0600)]
tty: serial: samsung: Declare earlycon for Exynos850
It makes it possible to use just "earlycon" param in kernel cmdline
on Exynos850 based boards instead of "earlycon=exynos4210,0x13820000",
as described in [1]:
When used with no options, the early console is determined by
stdout-path property in device tree's chosen node
Haotian Zhang [Mon, 17 Nov 2025 04:07:10 +0000 (12:07 +0800)]
serial: icom: Convert PCIBIOS_* return codes to errnos
icom_probe() uses pci_read_config_dword() that returns PCIBIOS_*
codes. The return code is returned from the probe function as is but
probe functions should return normal errnos. A proper implementation
can be found in drivers/leds/leds-ss4200.c
Convert PCIBIOS_* return codes using pcibios_err_to_errno() into
normal errno before returning them.
Magne Bruno [Mon, 10 Nov 2025 16:24:56 +0000 (17:24 +0100)]
serial: add support of CPCI cards
Addi-Data GmbH is manufacturing multi-serial ports cards supporting CompactPCI (known as CPCI).
Those cards are identified with different DeviceIds. Those cards integrating standard UARTs
work the same way as PCI/PCIe models already supported in the serial driver.
tty: replace use of system_unbound_wq with system_dfl_wq
Currently if a user enqueue a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistentcy cannot be addressed without refactoring the API.
This patch continues the effort to refactor worqueue APIs, which has begun
with the change introducing new workqueues and a new alloc_workqueue flag:
commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag")
system_dfl_wq should be the default workqueue so as not to enforce
locality constraints for random work whenever it's not required.
The old system_unbound_wq will be kept for a few release cycles.
IRQF_SHARED is the only flag handled in __serial8250_isa_init_ports()
and serial8250_probe_platform(). There is no need to precompute the
flags. Instead, initialize port->irqflags directly in the for loop.
Note the "if (bool)" is cheap and these are not hot paths anyway.
8250_core is the only place where skip_txen_test is used. And platform
and core end up in 8250.ko, so there is no change in module name (param
prefix). Therefore, move skip_txen_test there and make it local.
In 3.7, 8250 was unintentionally renamed to 8250_core. This happened in
the commit 835d844d1a28 (8250_pnp: do pnp probe before legacy probe).
This made 8250.<xxxx> module options effectively defunct. Instead,
8250_core.<xxxx> worked.
In 3.9, the commit f2b8dfd9e480 (serial: 8250: Keep 8250.<xxxx> module
options functional after driver rename) made the original options work
again by introducing a hack.
Later in 3.9, the commit 9196d8acd7f9 (TTY: 8250, revert module name
change) changed the module name back to 8250 (from 8250_core). Since
then, the hack was there to support the transient 8250_core.<xxxx>
options. Those were present only in the 3.7..3.9 range.
These transient options were deprecated by 9326b047e4fd (TTY: 8250,
deprecated 8250_core.* options) in v3.9 too.
Now, after those 12 years, it is time to get rid of this hack
completely.
serial: xilinx_uartps: drop cdns_uart::cdns_uart_driver
Provided the uart driver is available globally, there is no need to
store a pointer to it in struct cdns_uart. Instead, use the global
cdns_uart_uart_driver in the code directly.
Use guards in the serial_core code. This improves readability, makes
error handling easier, and marks locked portions of code explicit. All
that while being sure the lock is unlocked.
Neither uart_do_autoconfig(), nor uart_wait_modem_status() can return
-ENOIOCTLCMD. The ENOIOCTLCMD checks are there to check if 'cmd' matched
against TIOCSERCONFIG, and TIOCMIWAIT respectively. (With 0 or error in
'ret', it does not matter.)
Therefore, the code can simply return from the TIOCSERCONFIG and
TIOCMIWAIT spots immediately.
To be more explicit, use 'if' instead of switch-case for those single
values.
And return without jumping to the 'out' label -- it can be removed too.
Use guards in the vt/keyboard code. This improves readability, makes
error handling easier, and marks locked portions of code explicit. All
that while being sure the lock is unlocked.
The vt/keyboard code can use __free to ensure the temporary buffers are
freed. Perform the switch.
And even one non-temporary in kbd_connect(). There are fail paths, so
ensure the buffer is freed in them and not when returning 0 -- by
retain_and_null_ptr().
Use guards in the moxa code. This improves readability, makes error
handling easier, and marks locked portions of code explicit. All that
while being sure the lock is unlocked.
Use guards in the n_hdlc code. This improves readability, makes error
handling easier, and marks locked portions of code explicit. All that
while being sure the lock is unlocked.
Use guards in the n_tty code. This improves readability, makes error
handling easier, and marks locked portions of code explicit. All that
while being sure the lock is unlocked.
Use guards in the pty code. This improves readability, makes error
handling easier, and marks locked portions of code explicit. All that
while being sure the lock is unlocked.
pty_set_pktmode() is handled specially -- the conditions are inverted
and return called if conditions unmet. This avoid double nested 'if's.
The variable is renamed to want_pktmode so it is not confused with the
current state of pktmode.
David Laight [Wed, 19 Nov 2025 22:41:23 +0000 (22:41 +0000)]
drivers/tty/vt: use umin() instead of min_t(u16, ...) for row/col limits
The row/column bounds (for a screen window box) are changed from
'offset one' to 'offset zero' and bound to the screen size using:
v->xs = min_t(u16, v->xs - 1, vc->vc_cols - 1);
This has the side effect of converting zero to the limit.
A check I'm adding to min_t() reports that (u16)(v->xs - 1) (etc)
discards signiticant bits (because v->xs is promoted to 'int' before
the addition).
If v->xs is zero (it comes from userspace) it converts -1 to 0xffff.
This is then bounded to 'vc->vc_cols - 1' which will be fine.
Replace with:
v->xs = umin(v->xs - 1, vc->vc_cols - 1);
which again converts a -1 to unsigned - this time to 0xffffffff,
with the same overall effect.
Whether zero is meant to mean the 'maximum size' is unknown.
I can't find any documentation for the ioctl and it pre-dates git.
Lad Prabhakar [Thu, 23 Oct 2025 10:43:13 +0000 (11:43 +0100)]
serial: sh-sci: Merge sh-sci.h into sh-sci.c
Inline the contents of sh-sci.h into sh-sci.c and remove the
header file. The header only contained register definitions
and macros used exclusively by the sh-sci driver, making the
separate header unnecessary.
Hugo Villeneuve [Mon, 27 Oct 2025 14:29:56 +0000 (10:29 -0400)]
serial: sc16is7xx: add comments for lock requirements
Indicate why lock needs to be asserted when accessing
MSR register, as this is not immediately obvious when looking at this
register in the device datasheet.
Hugo Villeneuve [Mon, 27 Oct 2025 14:29:55 +0000 (10:29 -0400)]
serial: sc16is7xx: reformat comments to improve readability
Fold some multi-line comments into a single line, taking advantage of the
new 100 line length limit to improve readability and to have uniform style
across driver.
Add missing 's' to SC16IS7XX_MCR_TCRTLR_BIT registers comments.
Hugo Villeneuve [Mon, 27 Oct 2025 14:29:51 +0000 (10:29 -0400)]
serial: sc16is7xx: simplify to_sc16is7xx_one() with a single parameter
Simplify macro to_sc16is7xx_one() to only take one parameter, as most
of the time (19) it is called with the "port" structure name. This
improves readability.
For the remaining places where it is called (4), simply use container_of()
locally. This is similar to what is done in other drivers (ex: max310x).
For sc16is7xx_tx_proc(), first assigning "one" variable allows to simplify
"port" variable init.
There is no need to cast from a void * pointer, so remove this cast.
Also remove empty line inavertently added in commit d5078509c8b0
("serial: sc16is7xx: improve do/while loop in sc16is7xx_irq()") and
change variables order to follow reversed xmas tree.
Hugo Villeneuve [Mon, 27 Oct 2025 14:29:45 +0000 (10:29 -0400)]
serial: sc16is7xx: define common register access function
Rename lock/unlock functions to make it more generic and applicable to both
the Enhanced register set and the Special register set.
Use this new generic function when accessing the Special register set in
sc16is7xx_set_baud(), and when accessing the Enhanced register set in
sc16is7xx_set_termios() and sc16is7xx_probe().
This helps readability and also avoid to make future mistakes when
accessing these obfuscated registers.
Hugo Villeneuve [Mon, 27 Oct 2025 14:29:43 +0000 (10:29 -0400)]
serial: sc16is7xx: rename LCR macros to better reflect usage
There is no reference to CONF_MODE_A or CONF_MODE_B in the manufacturer's
datasheet.
Rename register set configuration macros for the LCR register, to better
show their intended usage to select either the Special register set, or the
Enhanced register set.
Heiko Stuebner [Tue, 21 Oct 2025 22:32:09 +0000 (00:32 +0200)]
dt-bindings: serial: snps-dw-apb-uart: Add support for rk3506
The uarts used in the RK3506 SoC are still the same dw-apb-uart compatible
type as on the SoCs that came before, so add the RK3506 to the list
of variants.
selftests: tty: add tty_tiocsti_test to .gitignore
Building the tty selftests generates the tty_tiocsti_test binary, which
appears as untracked file in git. As mentioned in the kselftest
documentation, all the generated objects must be placed inside
.gitignore. This prevents the generated objects from accidentally
getting staged and keeps the working tree clean.
Add the tty_tiocsti_test binary to .gitignore to avoid accidentally
staging the build artifact and maintain a clean working tree.
Linus Torvalds [Sun, 26 Oct 2025 17:33:46 +0000 (10:33 -0700)]
Merge tag 'char-misc-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small char/misc/android driver fixes for 6.18-rc3 for
reported issues. Included in here are:
- rust binder fixes for reported issues
- mei device id addition
- mei driver fixes
- comedi bugfix
- most usb driver bugfixes
- fastrpc memory leak fix
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
most: usb: hdm_probe: Fix calling put_device() before device initialization
most: usb: Fix use-after-free in hdm_disconnect
binder: remove "invalid inc weak" check
mei: txe: fix initialization order
comedi: fix divide-by-zero in comedi_buf_munge()
mei: late_bind: Fix -Wincompatible-function-pointer-types-strict
misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup
mei: me: add wildcat lake P DID
misc: amd-sbi: Clarify that this is a BMC driver
nvmem: rcar-efuse: add missing MODULE_DEVICE_TABLE
binder: Fix missing kernel-doc entries in binder.c
rust_binder: report freeze notification only when fully frozen
rust_binder: don't delete FreezeListener if there are pending duplicates
rust_binder: freeze_notif_done should resend if wrong state
rust_binder: remove warning about orphan mappings
rust_binder: clean `clippy::mem_replace_with_default` warning
Linus Torvalds [Sun, 26 Oct 2025 17:29:45 +0000 (10:29 -0700)]
Merge tag 'staging-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some small staging driver fixes for the gpib subsystem to
resolve some reported issues. Included in here are:
- memory leak fixes
- error code fixes
- proper protocol fixes
All of these have been in linux-next for almost 2 weeks now with no
reported issues"
* tag 'staging-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: gpib: Fix device reference leak in fmh_gpib driver
staging: gpib: Return -EINTR on device clear
staging: gpib: Fix sending clear and trigger events
staging: gpib: Fix no EOI on 1 and 2 byte writes
Linus Torvalds [Sun, 26 Oct 2025 17:24:39 +0000 (10:24 -0700)]
Merge tag 'tty-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are some small tty and serial driver fixes for reported issues.
Included in here are:
- sh-sci serial driver fixes
- 8250_dw and _mtk driver fixes
- sc16is7xx driver bugfix
- new 8250_exar device ids added
All of these have been in linux-next this past week with no reported
issues"
* tag 'tty-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: 8250_mtk: Enable baud clock and manage in runtime PM
serial: 8250_dw: handle reset control deassert error
dt-bindings: serial: sh-sci: Fix r8a78000 interrupts
serial: sc16is7xx: remove useless enable of enhanced features
serial: 8250_exar: add support for Advantech 2 port card with Device ID 0x0018
tty: serial: sh-sci: fix RSCI FIFO overrun handling
Linus Torvalds [Sun, 26 Oct 2025 16:57:18 +0000 (09:57 -0700)]
Merge tag 'x86_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Remove dead code leftovers after a recent mitigations cleanup which
fail a Clang build
- Make sure a Retbleed mitigation message is printed only when
necessary
- Correct the last Zen1 microcode revision for which Entrysign sha256
check is needed
- Fix a NULL ptr deref when mounting the resctrl fs on a system which
supports assignable counters but where L3 total and local bandwidth
monitoring has been disabled at boot
* tag 'x86_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/bugs: Remove dead code which might prevent from building
x86/bugs: Qualify RETBLEED_INTEL_MSG
x86/microcode: Fix Entrysign revision check for Zen1/Naples
x86,fs/resctrl: Fix NULL pointer dereference with events force-disabled in mbm_event mode
Linus Torvalds [Sun, 26 Oct 2025 16:54:36 +0000 (09:54 -0700)]
Merge tag 'irq_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov:
- Restore the original buslock locking in a couple of places in the irq
core subsystem after a rework
* tag 'irq_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/manage: Add buslock back in to enable_irq()
genirq/manage: Add buslock back in to __disable_irq_nosync()
genirq/chip: Add buslock back in to irq_set_handler()
Linus Torvalds [Sun, 26 Oct 2025 16:44:36 +0000 (09:44 -0700)]
Merge tag 'objtool_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Borislav Petkov:
- Fix x32 build due to wrong format specifier on that sub-arch
- Add one more Rust noreturn function to objtool's list
* tag 'objtool_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Fix failure when being compiled on x32 system
objtool/rust: add one more `noreturn` Rust function
Linus Torvalds [Sun, 26 Oct 2025 16:42:19 +0000 (09:42 -0700)]
Merge tag 'sched_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Borislav Petkov:
- Make sure a CFS runqueue on a throttled hierarchy has its PELT clock
throttled otherwise task movement and manipulation would lead to
dangling cfs_rq references and an eventual crash
* tag 'sched_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Start a cfs_rq on throttled hierarchy with PELT clock throttled
Linus Torvalds [Sun, 26 Oct 2025 16:40:16 +0000 (09:40 -0700)]
Merge tag 'timers_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Borislav Petkov:
- Do not create more than eight (max supported) AUX clocks sysfs
hierarchies
* tag 'timers_urgent_for_v6.18_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timekeeping: Fix aux clocks sysfs initialization loop bound
Linus Torvalds [Sat, 25 Oct 2025 16:35:26 +0000 (09:35 -0700)]
Merge tag 'riscv-for-linus-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Paul Walmsley:
- Close a race during boot between userspace vDSO usage and some
late-initialized vDSO data
- Improve performance on systems with non-CPU-cache-coherent
DMA-capable peripherals by enabling write combining on
pgprot_dmacoherent() allocations
- Add human-readable detail for RISC-V IPI tracing
- Provide more information to zsmalloc on 64-bit RISC-V to improve
allocation
- Silence useless boot messages about CPUs that have been disabled in
DT
- Resolve some compiler and smatch warnings and remove a redundant
macro
* tag 'riscv-for-linus-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: hwprobe: avoid uninitialized variable use in hwprobe_arch_id()
riscv: cpufeature: avoid uninitialized variable in has_thead_homogeneous_vlenb()
riscv: hwprobe: Fix stale vDSO data for late-initialized keys at boot
riscv: add a forward declaration for cpuinfo_op
RISC-V: Don't print details of CPUs disabled in DT
riscv: Remove the PER_CPU_OFFSET_SHIFT macro
riscv: mm: Define MAX_POSSIBLE_PHYSMEM_BITS for zsmalloc
riscv: Register IPI IRQs with unique names
ACPI: RIMT: Fix unused function warnings when CONFIG_IOMMU_API is disabled
RISC-V: Define pgprot_dmacoherent() for non-coherent devices
Linus Torvalds [Sat, 25 Oct 2025 16:31:13 +0000 (09:31 -0700)]
Merge tag 'xfs-fixes-6.18-rc3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Carlos Maiolino:
"The main highlight here is a fix for a bug brought in by the removal
of attr2 mount option, where some installations might actually have
'attr2' explicitly configured in fstab preventing system to boot by
not being able to remount the rootfs as RW.
Besides that there are a couple fix to the zonefs implementation,
changing XFS_ONLINE_SCRUB_STATS to depend on DEBUG_FS (was select
before), and some other minor changes"
* tag 'xfs-fixes-6.18-rc3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: fix locking in xchk_nlinks_collect_dir
xfs: loudly complain about defunct mount options
xfs: always warn about deprecated mount options
xfs: don't set bt_nr_sectors to a negative number
xfs: don't use __GFP_NOFAIL in xfs_init_fs_context
xfs: cache open zone in inode->i_private
xfs: avoid busy loops in GCD
xfs: XFS_ONLINE_SCRUB_STATS should depend on DEBUG_FS
xfs: do not tightly pack-write large files
xfs: Improve CONFIG_XFS_RT Kconfig help
Linus Torvalds [Sat, 25 Oct 2025 01:50:15 +0000 (18:50 -0700)]
Merge tag 'v6.18-rc2-smb-server-fixes' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
"smbdirect (RDMA) fixes in order avoid potential submission queue
overflows:
- free transport teardown fix
- credit related fixes (five server related, one client related)"
* tag 'v6.18-rc2-smb-server-fixes' of git://git.samba.org/ksmbd:
smb: server: let free_transport() wait for SMBDIRECT_SOCKET_DISCONNECTED
smb: client: make use of smbdirect_socket.send_io.lcredits.*
smb: server: make use of smbdirect_socket.send_io.lcredits.*
smb: server: simplify sibling_list handling in smb_direct_flush_send_list/send_done
smb: server: smb_direct_disconnect_rdma_connection() already wakes all waiters on error
smb: smbdirect: introduce smbdirect_socket.send_io.lcredits.*
smb: server: allocate enough space for RW WRs and ib_drain_qp()
* tag 'drm-fixes-2025-10-24' of https://gitlab.freedesktop.org/drm/kernel:
drm/xe: Check return value of GGTT workqueue allocation
drm/amd/display: use GFP_NOWAIT for allocation in interrupt handler
drm/amd/display: increase max link count and fix link->enc NULL pointer access
drm/amd/display: Fix NULL pointer dereference
drm/panic: Fix 24bit pixel crossing page boundaries
drm/panic: Fix divide by 0 if the screen width < font width
drm/panic: Fix kmsg text drawing rectangle
drm/panic: Fix qr_code, ensure vmargin is positive
drm/panic: Fix overlap between qr code and logo
drm/panic: Fix drawing the logo on a small narrow screen
drm/xe/uapi: Hide the madvise autoreset behind a VM_BIND flag
drm/xe: Retain vma flags when recreating and splitting vmas for madvise
drm/i915/panic: fix panic structure allocation memory leak
drm/panthor: Fix kernel panic on partial unmap of a GPU VA region
drm/rockchip: dw_hdmi: use correct SCLIN mask for RK3228
Linus Torvalds [Fri, 24 Oct 2025 23:43:08 +0000 (16:43 -0700)]
Merge tag 'pci-v6.18-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci fixes from Bjorn Helgaas:
- Add DWC custom pci_ops for the root bus instead of overwriting the
DBI base address, which broke drivers that rely on the DBI address
for iATU programming; fixes an FU740 probe regression (Krishna
Chaitanya Chundru)
- Revert qcom ECAM enablement, which is rendered unnecessary by the DWC
custom pci_ops (Krishna Chaitanya Chundru)
- Fix longstanding MIPS Malta resource registration issues to avoid
exposing them when the next commit fixes the boot failure (Maciej W.
Rozycki)
- Use pcibios_align_resource() on MIPS Malta to fix boot failure caused
by using the generic pci_enable_resources() (Ilpo Järvinen)
- Enable only ASPM L0s and L1, not L1 PM Substates, for devicetree
platforms because we lack information required to configure L1
Substates; fixes regressions on powerpc and rockchip. A qcom
regression (L1 Substates no longer enabled) remains and will be
addressed next (Bjorn Helgaas)
* tag 'pci-v6.18-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
PCI/ASPM: Enable only L0s and L1 for devicetree platforms
MIPS: Malta: Use pcibios_align_resource() to block io range
MIPS: Malta: Fix PCI southbridge legacy resource reservations
MIPS: Malta: Fix keyboard resource preventing i8042 driver from registering
Revert "PCI: qcom: Prepare for the DWC ECAM enablement"
PCI: dwc: Use custom pci_ops for root bus DBI vs ECAM config access
Linus Torvalds [Fri, 24 Oct 2025 22:51:24 +0000 (15:51 -0700)]
Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library fix from Eric Biggers:
"Avoid some false-positive KMSAN warnings by restoring the dependency
of the architecture-optimized Poly1305 code on !KMSAN"
* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
lib/crypto: poly1305: Restore dependency of arch code on !KMSAN
Linus Torvalds [Fri, 24 Oct 2025 22:48:08 +0000 (15:48 -0700)]
Merge tag '6.18-rc2-smb-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- add missing tracepoints
- smbdirect (RDMA) fix
- fix potential issue with credits underflow
- rename fix
- improvement to calc_signature and additional cleanup patch
* tag '6.18-rc2-smb-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: #include cifsglob.h before trace.h to allow structs in tracepoints
cifs: Call the calc_signature functions directly
smb: client: get rid of d_drop() in cifs_do_rename()
cifs: Fix TCP_Server_Info::credits to be signed
cifs: Add a couple of missing smb3_rw_credits tracepoints
smb: client: allocate enough space for MR WRs and ib_drain_qp()
Linus Torvalds [Fri, 24 Oct 2025 19:48:19 +0000 (12:48 -0700)]
Merge tag 'block-6.18-20251023' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- Fix dma alignment for PI
- Fix selinux bogosity with nbd, where sendmsg would get rejected
* tag 'block-6.18-20251023' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
block: require LBA dma_alignment when using PI
nbd: override creds to kernel when calling sock_{send,recv}msg()
Linus Torvalds [Fri, 24 Oct 2025 19:44:31 +0000 (12:44 -0700)]
Merge tag 'io_uring-6.18-20251023' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
- Add MAINTAINERS entry for zcrx, mostly so that netdev gets
automatically CC'ed by default on any changes there too.
- Fix for the SQPOLL busy vs work time accounting.
It was using getrusage(), which was both broken from a thread point
of view (we only care about the SQPOLL thread itself), and vastly
overkill as only the systime was used. On top of that, also be a bit
smarter in when it's queried. It used excessive CPU before this
change. Marked for stable as well.
- Fix provided ring buffer auto commit for uring_cmd.
- Fix a few style issues and sparse annotation for a lock.
* tag 'io_uring-6.18-20251023' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring: fix buffer auto-commit for multishot uring_cmd
io_uring: correct __must_hold annotation in io_install_fixed_file
io_uring zcrx: add MAINTAINERS entry
io_uring: Fix code indentation error
io_uring/sqpoll: be smarter on when to update the stime usage
io_uring/sqpoll: switch away from getrusage() for CPU accounting
io_uring: fix incorrect unlikely() usage in io_waitid_prep()
Linus Torvalds [Fri, 24 Oct 2025 19:40:51 +0000 (12:40 -0700)]
Merge tag 'slab-for-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fixes from Vlastimil Babka:
- Two fixes for race conditions in obj_exts allocation (Hao Ge)
- Fix for slab accounting imbalance due to deferred slab decativation
(Vlastimil Babka)
* tag 'slab-for-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
slab: Fix obj_ext mistakenly considered NULL due to race condition
slab: fix slab accounting imbalance due to defer_deactivate_slab()
slab: Avoid race on slab->obj_exts in alloc_slab_obj_exts
Linus Torvalds [Fri, 24 Oct 2025 18:17:38 +0000 (11:17 -0700)]
Merge tag 'devicetree-fixes-for-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Fix handling of GICv5 ITS MSI properties on platforms with
'msi-parent' as well as a of_node refcounting fix.
This is also preparation for further refactoring in 6.19 to use
common DT parsing of MSI properties.
* tag 'devicetree-fixes-for-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of/irq: Export of_msi_xlate() for module usage
of/irq: Fix OF node refcount in of_msi_get_domain()
of/irq: Add msi-parent check to of_msi_xlate()
Linus Torvalds [Fri, 24 Oct 2025 18:15:17 +0000 (11:15 -0700)]
Merge tag 'soc-fixes-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC fixes from Arnd Bergmann:
"The main change this time is an update to the MAINTAINERS file,
listing Krzysztof Kozlowski, Alexandre Belloni, and Linus Walleij as
additional maintainers for the SoC tree, in order to go back to a
group maintainership. Drew Fustini joins as an additional reviewer for
the SoC tree.
Thanks to all of you for volunteering to help out.
On the actual bugfixes, we have a few correctness changes for firmware
drivers (qtee, arm-ffa, scmi) and two devicetree fixes for Raspberry
Pi"
* tag 'soc-fixes-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
soc: officially expand maintainership team
firmware: arm_scmi: Fix premature SCMI_XFER_FLAG_IS_RAW clearing in raw mode
firmware: arm_scmi: Skip RAW initialization on failure
include: trace: Fix inflight count helper on failed initialization
firmware: arm_scmi: Account for failed debug initialization
ARM: dts: broadcom: rpi: Switch to V3D firmware clock
arm64: dts: broadcom: bcm2712: Define VGIC interrupt
firmware: arm_ffa: Add support for IMPDEF value in the memory access descriptor
tee: QCOMTEE should depend on ARCH_QCOM
tee: qcom: return -EFAULT instead of -EINVAL if copy_from_user() fails
tee: qcom: prevent potential off by one read
Linus Torvalds [Fri, 24 Oct 2025 18:01:40 +0000 (11:01 -0700)]
Merge tag 'spi-fix-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A moderately large collection of device specific changes here, mostly
fixes but also including a few new quirks and device IDs. This is all
fairly routine even for the affected devices"
* tag 'spi-fix-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: dt-bindings: spi-rockchip: Add RK3506 compatible
spi: intel-pci: Add support for Intel Wildcat Lake SPI serial flash
spi: intel-pci: Add support for Arrow Lake-H SPI serial flash
spi: intel: Add support for 128M component density
spi: airoha: fix reading/writing of flashes with more than one plane per lun
spi: airoha: switch back to non-dma mode in the case of error
spi: airoha: add support of dual/quad wires spi modes to exec_op() handler
spi: airoha: return an error for continuous mode dirmap creation cases
spi: amlogic: fix spifc build error
spi: cadence-quadspi: Fix pm_runtime unbalance on dma EPROBE_DEFER
spi: spi-nxp-fspi: limit the clock rate for different sample clock source selection
spi: spi-nxp-fspi: add extra delay after dll locked
spi: spi-nxp-fspi: re-config the clock rate when operation require new clock rate
spi: dw-mmio: add error handling for reset_control_deassert()
spi: rockchip-sfc: Fix DMA-API usage
spi: dt-bindings: cadence: add soc-specific compatible strings for zynqmp and versal-net
Linus Torvalds [Fri, 24 Oct 2025 17:45:29 +0000 (10:45 -0700)]
Merge tag 'gpio-fixes-for-v6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix regressions in regmap cache initialization in gpio-104-idio-16
and gpio-pci-idio-16
- configure first 16 GPIO lines of the IDIO-16 as fixed outputs
- fix duplicated IRQ mapping that can lead to an RCU stall in gpio-ljca
- fix printf formatters passed to dev_err() and make failure to set
debounce period non fatal
* tag 'gpio-fixes-for-v6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: ljca: Fix duplicated IRQ mapping
gpiolib: acpi: Use %pe when passing an error pointer to dev_err()
gpiolib: acpi: Make set debounce errors non fatal
gpio: idio-16: Define fixed direction of the GPIO lines
gpio: regmap: add the .fixed_direction_output configuration parameter
gpio: pci-idio-16: Define maximum valid register address offset
gpio: 104-idio-16: Define maximum valid register address offset
Arnd Bergmann [Fri, 17 Oct 2025 14:08:24 +0000 (16:08 +0200)]
soc: officially expand maintainership team
Since Olof moved on from the soc tree maintenance, Arnd has mainly taken
care of the day-to-day activities around the SoC tree by himself, which
is generally not a good setup.
Krzysztof, Linus and Alexandre have volunteered to become co-maintainers
of the SoC tree, with the plan of taking turns to do merges and reviews
to spread the workload. In addition, Drew joins as another reviewer.
of_msi_xlate() is required by drivers that can be configured
as modular, export the symbol.
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Reviewed-by: Frank Li <Frank.Li@nxp.com> Cc: Rob Herring <robh@kernel.org> Acked-by: Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20251021124103.198419-4-lpieralisi@kernel.org Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Simona Vetter [Fri, 24 Oct 2025 11:39:21 +0000 (13:39 +0200)]
Merge tag 'drm-xe-fixes-2025-10-23' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes
UAPI Changes:
- Make madvise autoreset an explicit behavior requested by userspace
(Thomas Hellström)
Driver Changes:
- Drop XE_VMA flag conversion and ensure GPUVA flags are passed around
(homas Hellström)
- Fix missing wq allocation error checking (Matthew Brost)
Hao Ge [Thu, 23 Oct 2025 14:33:13 +0000 (22:33 +0800)]
slab: Fix obj_ext mistakenly considered NULL due to race condition
If two competing threads enter alloc_slab_obj_exts(), and the one that
allocates the vector wins the cmpxchg(), the other thread that failed
allocation mistakenly assumes that slab->obj_exts is still empty due to
its own allocation failure. This will then trigger warnings with
CONFIG_MEM_ALLOC_PROFILING_DEBUG checks in the subsequent free path.
Therefore, let's check the result of cmpxchg() to see if marking the
allocation as failed was successful. If it wasn't, check whether the
winning side has succeeded its allocation (it might have been also
marking it as failed) and if yes, return success.
Suggested-by: Harry Yoo <harry.yoo@oracle.com> Fixes: f7381b911640 ("slab: mark slab->obj_exts allocation failures unconditionally") Cc: <stable@vger.kernel.org> Signed-off-by: Hao Ge <gehao@kylinos.cn> Link: https://patch.msgid.link/20251023143313.1327968-1-hao.ge@linux.dev Reviewed-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Harry Yoo <harry.yoo@oracle.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Charles Keepax [Thu, 23 Oct 2025 15:49:01 +0000 (16:49 +0100)]
genirq/manage: Add buslock back in to enable_irq()
The locking was changed from a buslock to a plain lock, but the patch
description states there was no functional change. Assuming this was
accidental so reverting to using the buslock.
Charles Keepax [Thu, 23 Oct 2025 15:49:00 +0000 (16:49 +0100)]
genirq/manage: Add buslock back in to __disable_irq_nosync()
The locking was changed from a buslock to a plain lock, but the patch
description states there was no functional change. Assuming this was
accidental so reverting to using the buslock.
Charles Keepax [Thu, 23 Oct 2025 15:48:59 +0000 (16:48 +0100)]
genirq/chip: Add buslock back in to irq_set_handler()
The locking was changed from a buslock to a plain lock, but the patch
description states there was no functional change. Assuming this was
accidental so reverting to using the buslock.
smb: server: let free_transport() wait for SMBDIRECT_SOCKET_DISCONNECTED
We should wait for the rdma_cm to become SMBDIRECT_SOCKET_DISCONNECTED!
At least on the client side (with similar code)
wait_event_interruptible() often returns with -ERESTARTSYS instead of
waiting for SMBDIRECT_SOCKET_DISCONNECTED.
We should use wait_event() here too, which makes the code be identical
in client and server, which will help when moving to common functions.
Fixes: b31606097de8 ("smb: server: move smb_direct_disconnect_rdma_work() into free_transport()") Cc: Steve French <smfrench@gmail.com> Cc: Tom Talpey <tom@talpey.com> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher <metze@samba.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
Ming Lei [Fri, 24 Oct 2025 01:34:59 +0000 (09:34 +0800)]
io_uring: fix buffer auto-commit for multishot uring_cmd
Commit 620a50c92700 ("io_uring: uring_cmd: add multishot support") added
multishot uring_cmd support with explicit buffer upfront commit via
io_uring_mshot_cmd_post_cqe(). However, the buffer selection path in
io_ring_buffer_select() was auto-committing buffers for non-pollable files,
which conflicts with uring_cmd's explicit upfront commit model.
This way consumes the whole selected buffer immediately, and causes
failure on the following buffer selection.
Fix this by checking uring_cmd to identify operations that handle buffer
commit explicitly, and skip auto-commit for these operations.
Cc: Caleb Sander Mateos <csander@purestorage.com> Fixes: 620a50c92700 ("io_uring: uring_cmd: add multishot support") Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Bjorn Helgaas [Thu, 23 Oct 2025 18:06:26 +0000 (13:06 -0500)]
PCI/ASPM: Enable only L0s and L1 for devicetree platforms
f3ac2ff14834 ("PCI/ASPM: Enable all ClockPM and ASPM states for devicetree
platforms") enabled Clock Power Management and L1 PM Substates, but those
features depend on CLKREQ# and possibly other device-specific
configuration. We don't know whether CLKREQ# is supported, so we shouldn't
blindly enable Clock PM and L1 PM Substates.
Enable only ASPM L0s and L1, and only when both ends of the link advertise
support for them.
Fixes: f3ac2ff14834 ("PCI/ASPM: Enable all ClockPM and ASPM states for devicetree platforms") Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de> Link: https://lore.kernel.org/r/db5c95a1-cf3e-46f9-8045-a1b04908051a@xenosoft.de/ Reported-by: FUKAUMI Naoki <naoki@radxa.com> Closes: https://lore.kernel.org/r/22594781424C5C98+22cb5d61-19b1-4353-9818-3bb2b311da0b@radxa.com/ Reported-by: Herve Codina <herve.codina@bootlin.com> Link: https://lore.kernel.org/r/20251015101304.3ec03e6b@bootlin.com/ Reported-by: Diederik de Haas <diederik@cknow-tech.com> Closes: https://lore.kernel.org/r/DDJXHRIRGTW9.GYC2ULZ5WQAL@cknow-tech.com/ Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Tested-by: FUKAUMI Naoki <naoki@radxa.com> Tested-by: Diederik de Haas <diederik@cknow-tech.com> Acked-by: Dragan Simic <dsimic@manjaro.org> Link: https://patch.msgid.link/20251023180645.1304701-1-helgaas@kernel.org
Stephen Rothwell [Wed, 22 Oct 2025 05:36:25 +0000 (16:36 +1100)]
MAINTAINERS: add Mark Brown as a linux-next maintainer
Mark has been kindly helping fill in when I have been unavailable over
the past several years. He has also put his hand up to take over
linux-next maintenance when I finally decide to stop (which may be some
time yet ;-) ).
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 23 Oct 2025 23:50:25 +0000 (16:50 -0700)]
Merge tag 'trace-rv-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
"A couple of fixes for Runtime Verification:
- A bug caused a kernel panic when reading enabled_monitors was
reported.
Change callback functions to always use list_head iterators and by
doing so, fix the wrong pointer that was leading to the panic.
- The rtapp/pagefault monitor relies on the MMU to be present
(pagefaults exist) but that was not enforced via kconfig, leading
to potential build errors on systems without an MMU.
Add that kconfig dependency"
* tag 'trace-rv-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
rv: Make rtapp/pagefault monitor depends on CONFIG_MMU
rv: Fully convert enabled_monitors to use list_head as iterator
Arnd Bergmann [Thu, 23 Oct 2025 20:30:29 +0000 (22:30 +0200)]
Merge tag 'arm-soc/for-6.18/devicetree-fixes' of https://github.com/Broadcom/stblinux into arm/fixes
This pull request contains Broadcom ARM-based SoCs Device Tree fixes for
6.18, please pull the following:
- Stefan switches the V3D block to use the firmware clock, rather than
the bare metal clock. This fixes hangs on boot after recent changes to
the V3D driver clocking went in.
* tag 'arm-soc/for-6.18/devicetree-fixes' of https://github.com/Broadcom/stblinux:
ARM: dts: broadcom: rpi: Switch to V3D firmware clock
projects / thirdparty / linux.git / log
