microsoft
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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/drivers/video/fbdev
История
Nam Cao 610ca0cadb fbdev: flush deferred work in fb_deferred_io_fsync() 
commit 15e4c1f462279b4e128f27de48133e0debe9e0df upstream.

The driver's fsync() is supposed to flush any pending operation to
hardware. It is implemented in this driver by cancelling the queued
deferred IO first, then schedule it for "immediate execution" by calling
schedule_delayed_work() again with delay=0. However, setting delay=0
only means the work is scheduled immediately, it does not mean the work
is executed immediately. There is no guarantee that the work is finished
after schedule_delayed_work() returns. After this driver's fsync()
returns, there can still be pending work. Furthermore, if close() is
called by users immediately after fsync(), the pending work gets
cancelled and fsync() may do nothing.

To ensure that the deferred IO completes, use flush_delayed_work()
instead. Write operations to this driver either write to the device
directly, or invoke schedule_delayed_work(); so by flushing the
workqueue, it can be guaranteed that all previous writes make it to the
device.

Fixes: 5e841b88d2 ("fb: fsync() method for deferred I/O flush.")
Cc: stable@vger.kernel.org
Signed-off-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2024-01-25 14:52:48 -08:00
..
aty fbdev: atyfb: only use ioremap_uc() on i386 and ia64 2023-11-08 17:26:45 +01:00
core fbdev: flush deferred work in fb_deferred_io_fsync() 2024-01-25 14:52:48 -08:00
geode fbdev: lxfb: Fix potential divide by zero 2023-04-05 11:24:53 +02:00
i810 video: fbdev: i810: use true,false for bool variables 2020-05-06 19:29:10 +02:00
intelfb fbdev: intelfb: Fix potential divide by zero 2023-04-05 11:24:53 +02:00
kyro video: fbdev: kyro: Error out if 'pixclock' equals zero 2021-07-26 20:06:00 +02:00
matrox fbdev: matroxfb: G200eW: Increase max memory from 1 MB to 16 MB 2023-01-12 11:59:17 +01:00
mb862xx video: fbdev: mb862xx: use DEVICE_ATTR_RO macro 2021-06-03 10:32:49 +02:00
mmp fbdev: mmp: fix value check in mmphw_probe() 2023-08-26 14:23:31 +02:00
nvidia fbdev: nvidia: Fix potential divide by zero 2023-04-05 11:24:53 +02:00
omap fbdev: omapfb: lcd_mipid: Fix an error handling path in mipid_spi_probe() 2023-07-23 13:47:05 +02:00
omap2 fbdev: omapfb: avoid stack overflow warning 2023-01-24 07:22:42 +01:00
riva video: fbdev: riva: Error out if 'pixclock' equals zero 2021-07-26 20:06:03 +02:00
savage fbdev: savagefb: use generic power management 2020-09-08 13:33:15 +02:00
sis video: fbdev: sis: fix typos in SiS_GetModeID() 2022-08-17 14:24:11 +02:00
vermilion fbdev: vermilion: decrease reference count in error path 2022-12-31 13:14:32 +01:00
via fbdev: via: Fix error in via_core_init() 2022-12-31 13:14:31 +01:00
68328fb.c video/fbdev/68328fb: Remove dead code 2020-01-03 14:27:43 +01:00
Kconfig fbdev/sh7760fb: Depend on FB=y 2023-10-06 13:18:18 +02:00
Makefile drm next for 5.10-rc1 2020-10-15 10:46:16 -07:00
acornfb.c video: fbdev: acornfb: remove free_unused_pages() 2021-02-24 13:38:31 -08:00
acornfb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
amba-clcd.c video: fbdev: amba-clcd: Fix refcount leak bugs 2022-08-17 14:24:11 +02:00
amifb.c backlight/video: Use Platform getter/setter functions 2021-02-12 10:01:45 +00:00
arcfb.c fbdev: arcfb: Fix error handling in arcfb_probe() 2023-05-24 17:36:42 +01:00
arkfb.c video: fbdev: arkfb: Check the size of screen before memset_io() 2022-08-17 14:24:16 +02:00
asiliantfb.c video: fbdev: asiliantfb: Error out if 'pixclock' equals zero 2021-07-26 20:05:50 +02:00
atafb.c video: fbdev: atari: Atari 2 bpp (STe) palette bugfix 2022-04-08 14:23:00 +02:00
atafb.h
…
atafb_iplan2p2.c fbdev: atafb: Remove obsolete module support 2019-04-01 17:46:55 +02:00
atafb_iplan2p4.c fbdev: atafb: Remove obsolete module support 2019-04-01 17:46:55 +02:00
atafb_iplan2p8.c fbdev: atafb: Remove obsolete module support 2019-04-01 17:46:55 +02:00
atafb_mfb.c fbdev: atafb: Remove obsolete module support 2019-04-01 17:46:55 +02:00
atafb_utils.h
…
atmel_lcdfb.c video: fbdev: atmel_lcdfb: fix an error code in atmel_lcdfb_probe() 2022-04-08 14:23:14 +02:00
au1100fb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
au1100fb.h au1100fb: fix DMA API abuse 2019-06-03 16:00:08 +02:00
au1200fb.c fbdev: au1200fb: Fix missing IRQ check in au1200fb_drv_probe 2023-07-27 08:47:02 +02:00
au1200fb.h
…
broadsheetfb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
bt431.h
…
bt455.h
…
bw2.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
c2p.h
…
c2p_core.h fbdev: c2p: Use BUILD_BUG() instead of custom solution 2020-03-09 11:12:19 +01:00
c2p_iplan2.c
…
c2p_planar.c
…
carminefb.c drm pull for 5.6-rc1 2020-01-30 08:04:01 -08:00
carminefb.h
…
carminefb_regs.h
…
cg3.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
cg6.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
cg14.c fbdev: cg14fb: use resource_size 2020-01-15 17:31:50 +01:00
chipsfb.c fbdev: chipsfb: Add missing pci_disable_device() in chipsfb_pci_init() 2022-09-15 11:30:01 +02:00
cirrusfb.c video: fbdev: cirrusfb: check pixclock to avoid divide by zero 2022-04-08 14:24:00 +02:00
clps711x-fb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
cobalt_lcdfb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
controlfb.c video: fbdev: controlfb: Fix COMPILE_TEST build 2022-04-08 14:23:14 +02:00
controlfb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cyber2000fb.c fbdev: cyber2000fb: use generic power management 2020-09-08 13:33:16 +02:00
cyber2000fb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
da8xx-fb.c backlight/video: Use Platform getter/setter functions 2021-02-12 10:01:45 +00:00
dnfb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
edid.h
…
efifb.c fbdev: efifb: Fix a use-after-free due early fb_info cleanup 2022-05-18 10:26:49 +02:00
ep93xx-fb.c fbdev/ep93xx-fb: Do not assign to struct fb_info.dev 2023-09-19 12:22:55 +02:00
ffb.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
fm2fb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
fsl-diu-fb.c fbdev: fsl-diu-fb: mark wr_reg_wa() static 2023-11-20 11:08:30 +01:00
g364fb.c fbdev/g364fb: Fix build failure 2020-02-19 10:58:22 -08:00
gbefb.c video: fbdev: gbefb: Only instantiate device when built for IP32 2021-10-06 11:12:28 +02:00
goldfishfb.c video: fbdev: goldfishfb: Fix defined but not used warning 2020-12-08 18:34:50 +01:00
grvga.c video: fbdev: Replace HTTP links with HTTPS ones 2020-07-20 11:47:29 +02:00
gxt4500.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
hecubafb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
hgafb.c video: hgafb: correctly handle card detect failure during probe 2021-05-21 15:04:05 +02:00
hitfb.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
hpfb.c maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault 2020-06-17 10:57:41 -07:00
hyperv_fb.c video: hyperv_fb: Avoid taking busy spinlock on panic path 2022-12-31 13:14:39 +01:00
i740_reg.h
…
i740fb.c video: fbdev: i740fb: Error out if 'pixclock' equals zero 2022-09-23 14:15:49 +02:00
imsttfb.c fbdev: imsttfb: fix a resource leak in probe 2023-11-20 11:08:30 +01:00
imxfb.c fbdev: imxfb: warn about invalid left/right margin 2023-07-27 08:46:58 +02:00
leo.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
macfb.c video: fbdev: Replace HTTP links with HTTPS ones 2020-07-20 11:47:29 +02:00
macmodes.c
…
macmodes.h
…
maxinefb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
metronomefb.c video: fbdev: Replace HTTP links with HTTPS ones 2020-07-20 11:47:29 +02:00
mx3fb.c video: fbdev: mx3fb: Fix kernel-doc, set but not used and string warnings 2020-11-30 20:04:56 +01:00
n411.c
…
neofb.c video: fbdev: neofb: add a check against divide error 2021-07-21 15:02:03 +02:00
ocfb.c video: ocfb: Use devm_platform_ioremap_resource() in ocfb_probe() 2020-01-03 14:27:49 +01:00
offb.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
p9100.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
platinumfb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
platinumfb.h
…
pm2fb.c fbdev: pm2fb: fix missing pci_disable_device() 2022-12-31 13:14:31 +01:00
pm3fb.c treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
pmag-aa-fb.c drm pull for 5.6-rc1 2020-01-30 08:04:01 -08:00
pmag-ba-fb.c drm pull for 5.6-rc1 2020-01-30 08:04:01 -08:00
pmagb-b-fb.c drm pull for 5.6-rc1 2020-01-30 08:04:01 -08:00
ps3fb.c powerpc/ps3: make system bus's remove and shutdown callbacks return void 2020-12-04 01:01:22 +11:00
pvr2fb.c video: fbdev: pvr2fb: initialize variables 2020-08-05 19:47:22 +02:00
pxa3xx-gcu.c video: fbdev: pxa3xx-gcu: Fix integer overflow in pxa3xx_gcu_write 2022-09-23 14:15:51 +02:00
pxa3xx-gcu.h
…
pxa168fb.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
pxa168fb.h
…
pxafb.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
pxafb.h video: pxafb: Remove cpufreq policy notifier 2019-08-26 10:02:02 +02:00
q40fb.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
s1d13xxxfb.c video: fbdev: s1d13xxxfb: Fix kernel-doc and set but not used warnings 2020-11-29 22:51:07 +01:00
s3c-fb.c video: fbdev: s3c-fb: Fix kernel-doc and set but not used warnings 2020-12-05 21:01:04 +01:00
s3c2410fb-regs-lcd.h fbdev: s3c2410fb: remove mach header dependency 2020-08-20 17:48:12 +02:00
s3c2410fb.c fbdev: s3c2410fb: remove mach header dependency 2020-08-20 17:48:12 +02:00
s3c2410fb.h
…
s3fb.c video: fbdev: s3fb: Check the size of screen before memset_io() 2022-08-17 14:24:16 +02:00
sa1100fb.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
sa1100fb.h ARM/fbdev: sa11x0: Switch to use GPIO descriptors 2020-04-17 15:50:11 +02:00
sbuslib.c fbdev: sbuslib: remove compat_alloc_user_space usage 2020-09-25 16:34:50 +02:00
sbuslib.h
…
sh7760fb.c drm pull for 5.6-rc1 2020-01-30 08:04:01 -08:00
sh_mobile_lcdcfb.c fbdev/sh_mobile: Drop unused include 2020-11-01 10:29:04 +01:00
sh_mobile_lcdcfb.h fbdev/sh_mobile: remove sh_mobile_lcdc_display_notify 2019-06-12 20:28:11 +02:00
simplefb.c fbdev: simplefb: Cleanup fb_info in .fb_destroy rather than .remove 2022-05-18 10:26:48 +02:00
skeletonfb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
sm501fb.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
sm712.h fbdev: sm712fb: use 1024x768 by default on non-MIPS, fix garbled display 2019-04-01 17:46:59 +02:00
sm712fb.c video: fbdev: sm712fb: Fix crash in smtcfb_write() 2022-04-08 14:24:02 +02:00
smscufx.c fbdev: smscufx: fix error handling code in ufx_usb_probe 2023-02-09 11:26:47 +01:00
ssd1307fb.c video: fbdev: ssd1307fb: Cache address ranges 2021-07-27 17:18:26 +02:00
sstfb.c video: fbdev: sstfb: Updated logging to fix set but not used warnings 2020-11-30 20:04:59 +01:00
sticore.h fbdev: stifb: Make the STI next font pointer a 32-bit signed offset 2023-12-08 08:48:04 +01:00
stifb.c fbdev: stifb: Fix info entry in sti_struct on error path 2023-06-09 10:32:21 +02:00
sunxvr500.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
sunxvr1000.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
sunxvr2500.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
tcx.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
tdfxfb.c video: fbdev: tdfx: Fix set but not used warning in att_outb() 2020-11-30 20:04:30 +01:00
tgafb.c fbdev: tgafb: Fix potential divide by zero 2023-04-05 11:24:53 +02:00
tmiofb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
tridentfb.c drm pull for 5.6-rc1 2020-01-30 08:04:01 -08:00
udlfb.c fbdev: udlfb: Fix endpoint check 2023-05-30 13:55:31 +01:00
uvesafb.c fbdev: uvesafb: Call cn_del_callback() at the end of uvesafb_exit() 2023-11-08 17:26:47 +01:00
valkyriefb.c video: fbdev: valkyriefb.c: fix warning comparing pointer to 0 2020-05-06 21:04:45 +02:00
valkyriefb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
vesafb.c video: fbdev: vesafb: Fix a use-after-free due early fb_info cleanup 2022-06-09 10:23:16 +02:00
vfb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
vga16fb.c video: vga16fb: Only probe for EGA and VGA 16 color graphic cards 2022-01-20 09:13:14 +01:00
vt8500lcdfb.c video: vt8500lcdfb: fix fallthrough warning 2020-04-17 15:50:08 +02:00
vt8500lcdfb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
vt8623fb.c video: fbdev: vt8623fb: Check the size of screen before memset_io() 2022-08-17 14:24:16 +02:00
w100fb.c video: fbdev: w100fb: Reset global state 2022-04-08 14:23:59 +02:00
w100fb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
wm8505fb.c video: fbdev: wm8505fb: fix sparse warnings about using incorrect types 2020-03-02 16:32:04 +01:00
wm8505fb_regs.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
wmt_ge_rops.c video: fbdev: wmt_ge_rops: Fix function not declared warnings 2020-12-08 18:34:36 +01:00
wmt_ge_rops.h
…
xen-fbfront.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
xilinxfb.c video: fbdev: Fix fall-through warning for Clang 2021-07-13 13:58:29 -05:00