--- /dev/null
+From 3d2ce76fdcbb8b56746b69b2b4a39a8e2e257445 Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Mon, 30 Sep 2024 15:40:25 -0700
+Subject: selftests: breakpoints: use remaining time to check if suspend
+ succeed
+
+From: Yifei Liu <yifei.l.liu@oracle.com>
+
+[ Upstream commit c66be905cda24fb782b91053b196bd2e966f95b7 ]
+
+step_after_suspend_test fails with device busy error while
+writing to /sys/power/state to start suspend. The test believes
+it failed to enter suspend state with
+
+$ sudo ./step_after_suspend_test
+TAP version 13
+Bail out! Failed to enter Suspend state
+
+However, in the kernel message, I indeed see the system get
+suspended and then wake up later.
+
+[611172.033108] PM: suspend entry (s2idle)
+[611172.044940] Filesystems sync: 0.006 seconds
+[611172.052254] Freezing user space processes
+[611172.059319] Freezing user space processes completed (elapsed 0.001 seconds)
+[611172.067920] OOM killer disabled.
+[611172.072465] Freezing remaining freezable tasks
+[611172.080332] Freezing remaining freezable tasks completed (elapsed 0.001 seconds)
+[611172.089724] printk: Suspending console(s) (use no_console_suspend to debug)
+[611172.117126] serial 00:03: disabled
+some other hardware get reconnected
+[611203.136277] OOM killer enabled.
+[611203.140637] Restarting tasks ...
+[611203.141135] usb 1-8.1: USB disconnect, device number 7
+[611203.141755] done.
+[611203.155268] random: crng reseeded on system resumption
+[611203.162059] PM: suspend exit
+
+After investigation, I noticed that for the code block
+if (write(power_state_fd, "mem", strlen("mem")) != strlen("mem"))
+ ksft_exit_fail_msg("Failed to enter Suspend state\n");
+
+The write will return -1 and errno is set to 16 (device busy).
+It should be caused by the write function is not successfully returned
+before the system suspend and the return value get messed when waking up.
+As a result, It may be better to check the time passed of those few
+instructions to determine whether the suspend is executed correctly for
+it is pretty hard to execute those few lines for 5 seconds.
+
+The timer to wake up the system is set to expire after 5 seconds and
+no re-arm. If the timer remaining time is 0 second and 0 nano secomd,
+it means the timer expired and wake the system up. Otherwise, the system
+could be considered to enter the suspend state failed if there is any
+remaining time.
+
+After appling this patch, the test would not fail for it believes the
+system does not go to suspend by mistake. It now could continue to the
+rest part of the test after suspend.
+
+Fixes: bfd092b8c272 ("selftests: breakpoint: add step_after_suspend_test")
+Reported-by: Sinadin Shan <sinadin.shan@oracle.com>
+Signed-off-by: Yifei Liu <yifei.l.liu@oracle.com>
+Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ .../testing/selftests/breakpoints/step_after_suspend_test.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/tools/testing/selftests/breakpoints/step_after_suspend_test.c b/tools/testing/selftests/breakpoints/step_after_suspend_test.c
+index b3ead29c60894..bff81d95a0319 100644
+--- a/tools/testing/selftests/breakpoints/step_after_suspend_test.c
++++ b/tools/testing/selftests/breakpoints/step_after_suspend_test.c
+@@ -152,7 +152,10 @@ void suspend(void)
+ if (err < 0)
+ ksft_exit_fail_msg("timerfd_settime() failed\n");
+
+- if (write(power_state_fd, "mem", strlen("mem")) != strlen("mem"))
++ system("(echo mem > /sys/power/state) 2> /dev/null");
++
++ timerfd_gettime(timerfd, &spec);
++ if (spec.it_value.tv_sec != 0 || spec.it_value.tv_nsec != 0)
+ ksft_exit_fail_msg("Failed to enter Suspend state\n");
+
+ close(timerfd);
+--
+2.43.0
+
--- /dev/null
+From 742451c624025eeaa07db86b11de597a84f54920 Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Fri, 30 Aug 2024 14:28:37 +0200
+Subject: selftests: vDSO: fix vDSO symbols lookup for powerpc64
+
+From: Christophe Leroy <christophe.leroy@csgroup.eu>
+
+[ Upstream commit ba83b3239e657469709d15dcea5f9b65bf9dbf34 ]
+
+On powerpc64, following tests fail locating vDSO functions:
+
+ ~ # ./vdso_test_abi
+ TAP version 13
+ 1..16
+ # [vDSO kselftest] VDSO_VERSION: LINUX_2.6.15
+ # Couldn't find __kernel_gettimeofday
+ ok 1 # SKIP __kernel_gettimeofday
+ # clock_id: CLOCK_REALTIME
+ # Couldn't find __kernel_clock_gettime
+ ok 2 # SKIP __kernel_clock_gettime CLOCK_REALTIME
+ # Couldn't find __kernel_clock_getres
+ ok 3 # SKIP __kernel_clock_getres CLOCK_REALTIME
+ ...
+ # Couldn't find __kernel_time
+ ok 16 # SKIP __kernel_time
+ # Totals: pass:0 fail:0 xfail:0 xpass:0 skip:16 error:0
+
+ ~ # ./vdso_test_getrandom
+ __kernel_getrandom is missing!
+
+ ~ # ./vdso_test_gettimeofday
+ Could not find __kernel_gettimeofday
+
+ ~ # ./vdso_test_getcpu
+ Could not find __kernel_getcpu
+
+On powerpc64, as shown below by readelf, vDSO functions symbols have
+type NOTYPE, so also accept that type when looking for symbols.
+
+$ powerpc64-linux-gnu-readelf -a arch/powerpc/kernel/vdso/vdso64.so.dbg
+ELF Header:
+ Magic: 7f 45 4c 46 02 02 01 00 00 00 00 00 00 00 00 00
+ Class: ELF64
+ Data: 2's complement, big endian
+ Version: 1 (current)
+ OS/ABI: UNIX - System V
+ ABI Version: 0
+ Type: DYN (Shared object file)
+ Machine: PowerPC64
+ Version: 0x1
+...
+
+Symbol table '.dynsym' contains 12 entries:
+ Num: Value Size Type Bind Vis Ndx Name
+ 0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
+ 1: 0000000000000524 84 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15
+ 2: 00000000000005f0 36 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15
+ 3: 0000000000000578 68 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15
+ 4: 0000000000000000 0 OBJECT GLOBAL DEFAULT ABS LINUX_2.6.15
+ 5: 00000000000006c0 48 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15
+ 6: 0000000000000614 172 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15
+ 7: 00000000000006f0 84 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15
+ 8: 000000000000047c 84 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15
+ 9: 0000000000000454 12 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15
+ 10: 00000000000004d0 84 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15
+ 11: 00000000000005bc 52 NOTYPE GLOBAL DEFAULT 8 __[...]@@LINUX_2.6.15
+
+Symbol table '.symtab' contains 56 entries:
+ Num: Value Size Type Bind Vis Ndx Name
+...
+ 45: 0000000000000000 0 OBJECT GLOBAL DEFAULT ABS LINUX_2.6.15
+ 46: 00000000000006c0 48 NOTYPE GLOBAL DEFAULT 8 __kernel_getcpu
+ 47: 0000000000000524 84 NOTYPE GLOBAL DEFAULT 8 __kernel_clock_getres
+ 48: 00000000000005f0 36 NOTYPE GLOBAL DEFAULT 8 __kernel_get_tbfreq
+ 49: 000000000000047c 84 NOTYPE GLOBAL DEFAULT 8 __kernel_gettimeofday
+ 50: 0000000000000614 172 NOTYPE GLOBAL DEFAULT 8 __kernel_sync_dicache
+ 51: 00000000000006f0 84 NOTYPE GLOBAL DEFAULT 8 __kernel_getrandom
+ 52: 0000000000000454 12 NOTYPE GLOBAL DEFAULT 8 __kernel_sigtram[...]
+ 53: 0000000000000578 68 NOTYPE GLOBAL DEFAULT 8 __kernel_time
+ 54: 00000000000004d0 84 NOTYPE GLOBAL DEFAULT 8 __kernel_clock_g[...]
+ 55: 00000000000005bc 52 NOTYPE GLOBAL DEFAULT 8 __kernel_get_sys[...]
+
+Fixes: 98eedc3a9dbf ("Document the vDSO and add a reference parser")
+Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
+Acked-by: Shuah Khan <skhan@linuxfoundation.org>
+Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ tools/testing/selftests/vDSO/parse_vdso.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/tools/testing/selftests/vDSO/parse_vdso.c b/tools/testing/selftests/vDSO/parse_vdso.c
+index 9ef3ad3789c17..540f9a284e9f0 100644
+--- a/tools/testing/selftests/vDSO/parse_vdso.c
++++ b/tools/testing/selftests/vDSO/parse_vdso.c
+@@ -238,7 +238,8 @@ void *vdso_sym(const char *version, const char *name)
+ ELF(Sym) *sym = &vdso_info.symtab[chain];
+
+ /* Check for a defined global or weak function w/ right name. */
+- if (ELF64_ST_TYPE(sym->st_info) != STT_FUNC)
++ if (ELF64_ST_TYPE(sym->st_info) != STT_FUNC &&
++ ELF64_ST_TYPE(sym->st_info) != STT_NOTYPE)
+ continue;
+ if (ELF64_ST_BIND(sym->st_info) != STB_GLOBAL &&
+ ELF64_ST_BIND(sym->st_info) != STB_WEAK)
+--
+2.43.0
+
of-irq-refer-to-actual-buffer-size-in-of_irq_parse_o.patch
ext4-ext4_search_dir-should-return-a-proper-error.patch
ext4-fix-i_data_sem-unlock-order-in-ext4_ind_migrate.patch
+spi-s3c64xx-fix-timeout-counters-in-flush_fifo.patch
+selftests-breakpoints-use-remaining-time-to-check-if.patch
+selftests-vdso-fix-vdso-symbols-lookup-for-powerpc64.patch
--- /dev/null
+From b5d67db44f1f13514b2a02282d09058a1656720f Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Tue, 24 Sep 2024 14:40:08 +0100
+Subject: spi: s3c64xx: fix timeout counters in flush_fifo
+
+From: Ben Dooks <ben.dooks@codethink.co.uk>
+
+[ Upstream commit 68a16708d2503b6303d67abd43801e2ca40c208d ]
+
+In the s3c64xx_flush_fifo() code, the loops counter is post-decremented
+in the do { } while(test && loops--) condition. This means the loops is
+left at the unsigned equivalent of -1 if the loop times out. The test
+after will never pass as if tests for loops == 0.
+
+Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
+Fixes: 230d42d422e7 ("spi: Add s3c64xx SPI Controller driver")
+Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
+Link: https://patch.msgid.link/20240924134009.116247-2-ben.dooks@codethink.co.uk
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/spi/spi-s3c64xx.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
+index d9420561236c2..108a087a2777c 100644
+--- a/drivers/spi/spi-s3c64xx.c
++++ b/drivers/spi/spi-s3c64xx.c
+@@ -211,7 +211,7 @@ static void s3c64xx_flush_fifo(struct s3c64xx_spi_driver_data *sdd)
+ loops = msecs_to_loops(1);
+ do {
+ val = readl(regs + S3C64XX_SPI_STATUS);
+- } while (TX_FIFO_LVL(val, sdd) && loops--);
++ } while (TX_FIFO_LVL(val, sdd) && --loops);
+
+ if (loops == 0)
+ dev_warn(&sdd->pdev->dev, "Timed out flushing TX FIFO\n");
+@@ -224,7 +224,7 @@ static void s3c64xx_flush_fifo(struct s3c64xx_spi_driver_data *sdd)
+ readl(regs + S3C64XX_SPI_RX_DATA);
+ else
+ break;
+- } while (loops--);
++ } while (--loops);
+
+ if (loops == 0)
+ dev_warn(&sdd->pdev->dev, "Timed out flushing RX FIFO\n");
+--
+2.43.0
+
projects / thirdparty / kernel / stable-queue.git / commitdiff
