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6f8836756f
linux/drivers/video/fbdev
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John Ogness 6f8836756f printk, xen: fbfront: create/use safe function for forcing preferred 
With commit 9e124fe16ff2("xen: Enable console tty by default in domU
if it's not a dummy") a hack was implemented to make sure that the
tty console remains the console behind the /dev/console device. The
main problem with the hack is that, after getting the console pointer
to the tty console, it is assumed the pointer is still valid after
releasing the console_sem. This assumption is incorrect and unsafe.

Make the hack safe by introducing a new function
console_force_preferred_locked() and perform the full operation
under the console_list_lock.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20221116162152.193147-33-john.ogness@linutronix.de
2022-12-02 11:25:02 +01:00
..
aty drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
core drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
geode drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
i810 fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
intelfb fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
kyro fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
matrox drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
mb862xx fbdev: mb862xx: Fix check of return value from irq_of_parse_and_map() 2022-10-08 15:20:09 +02:00
mmp video: fbdev: mmp: replace usage of found with dedicated list iterator variable 2022-04-12 22:06:10 +02:00
nvidia fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
omap fbdev: omap: Remove unnecessary print function dev_err() 2022-08-24 21:53:41 +02:00
omap2 fbdev: omapfb/dss: Use pm_runtime_resume_and_get() instead of pm_runtime_get_sync() 2022-10-08 15:20:08 +02:00
riva fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
savage fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
sis drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
vermilion fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
via fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
68328fb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
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 2022-07-26 08:56:22 +02:00
amifb.c video: fbdev: amiga: Simplify amifb_pan_display() 2022-07-18 07:54:17 +02:00
arcfb.c video: fbdev: arcfb: remove redundant initialization of variable err 2021-07-21 13:09:21 +02:00
arkfb.c fbdev: arkfb: Remove the unused function dac_read_reg() 2022-10-08 15:20:08 +02:00
asiliantfb.c fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
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
atafb.c video: fbdev: atari: Remove backward bug-compatibility 2022-07-18 07:56:18 +02:00
atafb.h
atmel_lcdfb.c video: fbdev: atmel_lcdfb: fix an error code in atmel_lcdfb_probe() 2022-01-30 19:38:35 +01:00
au1100fb.c video: fbdev: au1100fb: Drop unnecessary NULL ptr check 2022-06-20 20:19:50 +02:00
au1100fb.h video: fbdev: au1100fb: Spelling s/palette/palette/ 2022-02-16 10:54:42 +01:00
au1200fb.c video: fbdev: au1200fb: Make use of dma_mmap_coherent() 2022-01-29 22:24:25 +01:00
au1200fb.h
broadsheetfb.c fbdev: Use pageref offset for deferred-I/O writeback 2022-05-03 16:04:22 +02:00
bt431.h
bt455.h
bw2.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
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
c2p.h
carminefb_regs.h
carminefb.c fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
carminefb.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 drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
cirrusfb.c drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
clps711x-fb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
cobalt_lcdfb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
controlfb.c fbdev: controlfb: Remove the unused function VAR_MATCH() 2022-10-08 15:20:08 +02:00
controlfb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cyber2000fb.c drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
cyber2000fb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
da8xx-fb.c video: fbdev: da8xx-fb: Make use of the helper function dev_err_probe() 2022-01-29 23:22:36 +01:00
dnfb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
edid.h
efifb.c Merge drm/drm-next into drm-misc-next 2022-06-20 18:21:25 +02:00
ep93xx-fb.c video: ep93xx: Prepare clock before using it 2021-07-26 22:10:29 +02:00
ffb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
fm2fb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
fsl-diu-fb.c video: fbdev: fsl-diu-fb: remove unneeded variable 'res' 2020-10-17 08:23:14 +02:00
g364fb.c fbdev/g364fb: Fix build failure 2020-02-19 10:58:22 -08:00
gbefb.c fbdev: gbefb: Convert to use dev_groups 2022-10-08 15:20:09 +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 drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
hecubafb.c fbdev: Rename pagelist to pagereflist for deferred I/O 2022-05-03 16:04:22 +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 video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
hyperv_fb.c drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
i740_reg.h
i740fb.c drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
imsttfb.c fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
imxfb.c fbdev: imxfb: Remove redundant dev_err() call 2022-10-08 15:20:08 +02:00
Kconfig drm: Implement DRM aperture helpers under video/ 2022-06-27 11:07:55 +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
Makefile ARM: omap1: move lcd_dma code into omapfb driver 2022-04-21 15:00:45 +02:00
maxinefb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
metronomefb.c fbdev: Use pageref offset for deferred-I/O writeback 2022-05-03 16:04:22 +02:00
mx3fb.c dmaengine: imx: Move header to include/dma/ 2022-04-19 12:06:18 +01:00
n411.c
neofb.c fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
ocfb.c video: fbdev: ocfb: add const to of_device_id 2022-01-29 22:24:25 +01:00
offb.c video: fbdev: offb: Include missing linux/platform_device.h 2022-07-28 16:22:12 +10:00
p9100.c video: fbdev: sparc drivers: fix kernel-doc warnings for blank_mode 2020-12-08 18:34:08 +01:00
platinumfb.c video: fbdev: aty/matrox/...: Prepare cleanup of powerpc's asm/prom.h 2022-04-04 08:55:23 +02:00
platinumfb.h
pm2fb.c drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
pm3fb.c fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
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 fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
pxa3xx-gcu.c video: fbdev: pxa3xx-gcu: Fix integer overflow in pxa3xx_gcu_write 2022-06-20 20:12:17 +02:00
pxa3xx-gcu.h
pxa3xx-regs.h ARM: pxa: move regs-lcd.h into driver 2022-04-19 16:29:03 +02:00
pxa168fb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
pxa168fb.h
pxafb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
pxafb.h video: pxafb: Remove cpufreq policy notifier 2019-08-26 10:02:02 +02:00
q40fb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +02:00
s1d13xxxfb.c video: fbdev: s1d13xxxfb: Fix kernel-doc and set but not used warnings 2020-11-29 22:51:07 +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
s3c-fb.c drm for 5.18-rc1 2022-03-24 16:19:43 -07:00
s3fb.c drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
sa1100fb.c video: fbdev: sa1100fb: Remove unused sa1100fb_setup() 2022-07-18 07:54:18 +02:00
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: Use pageref offset for deferred-I/O writeback 2022-05-03 16:04:22 +02:00
sh_mobile_lcdcfb.h fbdev/sh_mobile: remove sh_mobile_lcdc_display_notify 2019-06-12 20:28:11 +02:00
simplefb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
skeletonfb.c drm-misc-next for v6.1: 2022-09-06 10:56:04 +02:00
sm501fb.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
sm712.h fbdev: sm712fb: use 1024x768 by default on non-MIPS, fix garbled display 2019-04-01 17:46:59 +02:00
sm712fb.c fbdev: Remove conflicting devices on PCI bus 2022-07-19 13:19:11 +02:00
smscufx.c fbdev: smscufx: Fix use-after-free in ufx_ops_open() 2022-10-08 15:20:09 +02:00
ssd1307fb.c Merge tag 'v6.0-rc5' into i2c/for-mergewindow 2022-09-16 20:42:18 +01:00
sstfb.c drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
sticore.h parisc/stifb: Keep track of hardware path of graphics card 2022-06-04 15:47:03 +02:00
stifb.c parisc: fbdev/stifb: Align graphics memory size to 4MB 2022-10-14 10:45:12 +02:00
sunxvr500.c drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
sunxvr1000.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
sunxvr2500.c drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
tcx.c fbdev: Move fbdev drivers from strlcpy to strscpy 2022-08-24 22:06:15 +02:00
tdfxfb.c drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
tgafb.c drm pull for 6.1-rc1 2022-10-05 11:24:12 -07:00
tmiofb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
tridentfb.c fbdev: tridentfb: Fix missing pci_disable_device() in probe and remove 2022-10-08 15:20:09 +02:00
udlfb.c fbdev: udlfb: Remove redundant initialization to variable identical 2022-10-08 15:20:08 +02:00
uvesafb.c treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
valkyriefb.c video: fbdev: Make *fb_setup() and *fb_init() static 2022-07-18 07:54:20 +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 2022-05-28 19:26:56 +02:00
vfb.c video: constify fb ops across all drivers 2019-12-05 10:57:53 +02:00
vga16fb.c fbdev: vga16fb: Add missing MODULE_DEVICE_TABLE() entry 2022-10-08 15:20:09 +02:00
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 drm-misc-next for v6.1: 2022-09-06 10:56:04 +02:00
w100fb.c video: fbdev: w100fb: Reset global state 2022-01-29 22:24:26 +01:00
w100fb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
wm8505fb_regs.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
wm8505fb.c video: fbdev: wm8505fb: fix sparse warnings about using incorrect types 2020-03-02 16:32:04 +01:00
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 printk, xen: fbfront: create/use safe function for forcing preferred 2022-12-02 11:25:02 +01:00
xilinxfb.c video: fbdev: Fix fall-through warning for Clang 2021-07-13 13:58:29 -05:00