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5f4dc28bd9
linux/drivers/video
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Keith Packard 5f4dc28bd9 fbcon: Clean up fbcon data in fb_info on FB_EVENT_FB_UNBIND with 0 fbs 
When FB_EVENT_FB_UNBIND is sent, fbcon has two paths, one path taken
when there is another frame buffer to switch any affected vcs to and
another path when there isn't.

In the case where there is another frame buffer to use,
fbcon_fb_unbind calls set_con2fb_map to remap all of the affected vcs
to the replacement frame buffer. set_con2fb_map will eventually call
con2fb_release_oldinfo when the last vcs gets unmapped from the old
frame buffer.

con2fb_release_oldinfo frees the fbcon data that is hooked off of the
fb_info structure, including the cursor timer.

In the case where there isn't another frame buffer to use,
fbcon_fb_unbind simply calls fbcon_unbind, which doesn't clear the
con2fb_map or free the fbcon data hooked from the fb_info
structure. In particular, it doesn't stop the cursor blink timer. When
the fb_info structure is then freed, we end up with a timer queue
pointing into freed memory and "bad things" start happening.

This patch first changes con2fb_release_oldinfo so that it can take a
NULL pointer for the new frame buffer, but still does all of the
deallocation and cursor timer cleanup.

Finally, the patch tries to replicate some of what set_con2fb_map does
by clearing the con2fb_map for the affected vcs and calling the
modified con2fb_release_info function to clean up the fb_info structure.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-02-11 14:16:22 +02:00
..
aty drivers/video/aty/aty128fb.c: fix a warning pertaining to the aty128fb backlight variable 2014-01-23 16:36:55 -08:00
backlight drivers/video/backlight/lcd.c: call put_device if device_register fails 2014-01-30 16:56:54 -08:00
console fbcon: Clean up fbcon data in fb_info on FB_EVENT_FB_UNBIND with 0 fbs 2014-02-11 14:16:22 +02:00
exynos ARM: SoC fixes for 3.13 merge window 2013-11-16 12:45:55 -08:00
geode framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
i810 i810: delete useless variable 2014-01-17 10:57:50 +02:00
intelfb video: intelfb: remove unnecessary pci_set_drvdata() 2013-09-19 13:30:07 +03:00
kyro video: kyro: fix incorrect sizes when copying to userspace 2013-11-26 16:40:14 +02:00
logo video/logo: Remove MIPS-specific include section 2014-01-17 10:57:49 +02:00
matrox video: Remove unnecessary semicolons 2013-10-30 13:34:52 +02:00
mb862xx video: mb862xx: Remove redundant dev_set_drvdata 2013-09-26 13:49:09 +03:00
mbx framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
mmp video: mmp: Using plain integer as NULL pointer 2014-01-17 10:57:48 +02:00
msm ARM: msm: Move mach/board.h contents to common.h 2013-08-06 11:18:02 -07:00
nvidia video: nvidiafb: remove unnecessary pci_set_drvdata() 2014-01-17 10:57:39 +02:00
omap video: omapfb: use dev_get_platdata() 2013-09-20 12:22:01 +03:00
omap2 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-01-29 20:49:12 -08:00
riva video: rivafb: remove unnecessary pci_set_drvdata() 2014-01-17 10:57:39 +02:00
savage video: savagefb: remove unnecessary pci_set_drvdata() 2013-09-19 13:30:09 +03:00
sis fbdev changes for 3.13 2013-11-14 14:44:20 +09:00
vermilion video: vmlfb: remove unnecessary pci_set_drvdata() 2014-01-17 10:57:40 +02:00
via viafb: rename display_timing to via_display_timing 2013-01-24 08:59:44 +01:00
68328fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
acornfb.c drivers/video/acornfb.c: use __free_reserved_page() to simplify the code 2013-11-13 12:09:03 +09:00
acornfb.h drivers/video/acornfb.c: remove dead code 2013-09-11 15:56:22 -07:00
amba-clcd.c fbdev changes for 3.13 2013-11-14 14:44:20 +09:00
amifb.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00
arcfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
arkfb.c PCI: Convert pcibios_resource_to_bus() to take a pci_bus, not a pci_dev 2013-12-21 10:06:10 -07:00
asiliantfb.c video: asiliantfb: remove unnecessary pci_set_drvdata() 2014-01-17 10:57:38 +02:00
atafb_iplan2p2.c
atafb_iplan2p4.c
atafb_iplan2p8.c
atafb_mfb.c
atafb_utils.h
atafb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
atafb.h
atmel_lcdfb.c atmel_lcdfb: fix module autoload 2013-12-04 10:48:12 +02:00
au1100fb.c fbdev changes for 3.13 2013-11-14 14:44:20 +09:00
au1100fb.h
au1200fb.c fbdev changes for 3.13 2013-11-14 14:44:20 +09:00
au1200fb.h
auo_k190x.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-04-30 09:36:50 -07:00
auo_k190x.h
auo_k1900fb.c AUO-K190x: add runtime-pm calls to controller init functions 2013-04-04 13:08:06 +03:00
auo_k1901fb.c AUO-K190x: add runtime-pm calls to controller init functions 2013-04-04 13:08:06 +03:00
bf54x-lq043fb.c Video / bf54x-lq043fb: Use module_platform_driver() to simplify code 2013-09-30 10:51:09 +03:00
bf537-lq035.c Drivers: video: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
bfin_adv7393fb.c procfs: new helper - PDE_DATA(inode) 2013-04-09 14:13:32 -04:00
bfin_adv7393fb.h
bfin-lq035q1-fb.c fbdev: bfin-lq035q1-fb: Use dev_pm_ops 2013-06-26 16:16:26 +03:00
bfin-t350mcqb-fb.c Video / bfin-t350mcqb-fb: Use module_platform_driver() to simplify code 2013-09-30 10:51:08 +03:00
broadsheetfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
bt431.h
bt455.h
bw2.c video: bw2: Remove redundant dev_set_drvdata 2013-09-26 13:49:22 +03:00
c2p_core.h
c2p_iplan2.c
c2p_planar.c
c2p.h
carminefb_regs.h
carminefb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
carminefb.h
cfbcopyarea.c
cfbfillrect.c
cfbimgblt.c video: Remove unnecessary semicolons 2013-10-30 13:34:52 +02:00
cg3.c video: cg3: Remove redundant dev_set_drvdata 2013-09-26 13:49:23 +03:00
cg6.c video: Remove unnecessary semicolons 2013-10-30 13:34:52 +02:00
cg14.c video: Remove unnecessary semicolons 2013-10-30 13:34:52 +02:00
chipsfb.c Drivers: video: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
cirrusfb.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00
clps711xfb.c ARM defconfigs: add missing inclusions of linux/platform_device.h 2013-02-14 15:14:32 -08:00
cobalt_lcdfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
controlfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
controlfb.h
cyber2000fb.c fbdev changes for 3.13 2013-11-14 14:44:20 +09:00
cyber2000fb.h
da8xx-fb.c video: da8xx-fb: remove unwanted define 2013-10-30 13:36:48 +02:00
display_timing.c video: add display_timing and videomode 2013-01-24 09:03:04 +01:00
dnfb.c Drivers: video: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
edid.h
efifb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
ep93xx-fb.c video: ep93xx-fb: use dev_get_platdata() 2013-09-20 12:22:02 +03:00
fb_ddc.c
fb_defio.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
fb_draw.h
fb_notify.c
fb_sys_fops.c
fb-puv3.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
fbcmap.c drivers: video: fbcmap: remove the redundency and incorrect checkings 2013-08-30 11:41:24 +03:00
fbcvt.c
fbmem.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-01-29 20:49:12 -08:00
fbmon.c Merge branch '3.10/fb-mmap' into for-next 2013-04-26 09:14:47 +03:00
fbsysfs.c fb: reorder the lock sequence to fix potential dead lock 2013-11-11 15:52:59 +02:00
ffb.c video: ffb: Remove redundant dev_set_drvdata 2013-09-26 13:49:24 +03:00
fm2fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
fsl-diu-fb.c fbdev changes for 3.13 2013-11-14 14:44:20 +09:00
g364fb.c
gbefb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
goldfishfb.c treewide: Fix typos in printk 2013-03-20 16:26:32 +01:00
grvga.c video: grvga: Remove redundant dev_set_drvdata 2013-09-26 13:49:07 +03:00
gxt4500.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
hdmi.c video/hdmi: Rename HDMI_IDENTIFIER to HDMI_IEEE_OUI 2013-08-30 08:42:01 +10:00
hecubafb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
hgafb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
hitfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
hpfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
hyperv_fb.c hyperv-fb: add blanking support 2013-10-09 12:52:50 +03:00
i740_reg.h
i740fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
igafb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
imsttfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
imxfb.c video: imxfb: use dev_get_platdata() 2013-09-20 12:22:03 +03:00
jz4740_fb.c Video / jz4740_fb: Use module_platform_driver() to simplify code 2013-09-30 10:51:09 +03:00
Kconfig video: add OpenCores VGA/LCD framebuffer driver 2014-01-17 10:57:49 +02:00
leo.c video: Remove unnecessary semicolons 2013-10-30 13:34:52 +02:00
macfb.c m68k: Remove superfluous inclusions of <asm/bootinfo.h> 2013-11-26 11:09:22 +01:00
macmodes.c
macmodes.h
Makefile video: add OpenCores VGA/LCD framebuffer driver 2014-01-17 10:57:49 +02:00
maxinefb.c
metronomefb.c fbdev: fix error return code in metronomefb_probe() 2013-10-29 12:20:11 +02:00
modedb.c
mx3fb.c video: mx3fb: Allow blocking during framebuffer allocation 2014-01-17 10:57:44 +02:00
mxsfb.c video: mxsfb: fix broken videomode selection 2014-01-17 10:57:41 +02:00
n411.c
neofb.c fbdev changes for 3.13 2013-11-14 14:44:20 +09:00
nuc900fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
nuc900fb.h ARM: w90x900: move platform_data definitions 2012-09-14 11:18:59 +02:00
ocfb.c video: add OpenCores VGA/LCD framebuffer driver 2014-01-17 10:57:49 +02:00
of_display_timing.c video: of: display_timing: correct display-timings node finding 2013-09-26 12:31:42 +03:00
of_videomode.c videomode: videomode_from_timing work 2013-03-21 14:34:33 +02:00
offb.c offb: Add palette hack for little endian 2013-12-10 11:25:07 +11:00
output.c video: output: convert class code to use dev_groups 2013-07-26 10:37:02 +03:00
p9100.c video: p9100: Remove redundant dev_set_drvdata 2013-09-26 13:49:25 +03:00
platinumfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
platinumfb.h
pm2fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
pm3fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
pmag-aa-fb.c
pmag-ba-fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
pmagb-b-fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
ps3fb.c fbdev/ps3fb: Fix section mismatch warning for ps3fb_probe 2013-09-11 11:39:39 +10:00
pvr2fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
pxa3xx-gcu.c Various fbdev changes for 3.11 2013-07-09 15:51:32 -07:00
pxa3xx-gcu.h
pxa168fb.c video: pxa168fb: use dev_get_platdata() 2013-09-20 12:22:01 +03:00
pxa168fb.h
pxafb.c video: pxafb: use dev_get_platdata() 2013-09-20 12:22:02 +03:00
pxafb.h
q40fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
s1d13xxxfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
s3c2410fb.c video: s3c2410: use dev_get_platdata() 2013-09-20 12:22:02 +03:00
s3c2410fb.h
s3c-fb.c video: s3c-fb: use dev_get_platdata() 2013-09-20 12:23:21 +03:00
s3fb.c PCI: Convert pcibios_resource_to_bus() to take a pci_bus, not a pci_dev 2013-12-21 10:06:10 -07:00
sa1100fb.c video: sa1100fb: use dev_get_platdata() 2013-09-20 12:22:02 +03:00
sa1100fb.h
sbuslib.c video: Remove unnecessary semicolons 2013-10-30 13:34:52 +02:00
sbuslib.h
sgivwfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
sh7760fb.c video: sh7760fb: fix to pass correct device identity to free_irq() 2013-07-29 11:25:03 +03:00
sh_mipi_dsi.c video: remove unnecessary platform_set_drvdata() 2013-06-26 14:44:40 +03:00
sh_mobile_hdmi.c fbdev: shmobile-hdmi: Convert to clk_prepare/unprepare 2013-11-11 15:32:58 +02:00
sh_mobile_lcdcfb.c fbdev: sh_mobile_lcdcfb: Don't use plain 0 as NULL pointer 2014-01-17 10:57:38 +02:00
sh_mobile_lcdcfb.h fbdev: sh_mobile_lcdc: Store the backlight brightness internally 2012-11-21 15:50:01 +01:00
sh_mobile_meram.c fbdev: sh_mobile_meram: Fix defined but not used compiler warnings 2013-11-26 16:59:42 +02:00
simplefb.c simplefb: use write-combined remapping 2013-10-30 12:49:02 +02:00
skeletonfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
sm501fb.c Drivers: video: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
smscufx.c video: smscufx: Use NULL instead of 0 2013-09-26 11:50:08 +03:00
ssd1307fb.c video: ssd1307fb: Remove redundant of_match_ptr 2013-10-09 12:35:44 +03:00
sstfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
sticore.h parisc: sticon - unbreak on 64bit kernel 2013-11-07 22:46:20 +01:00
stifb.c fbdev changes for 3.13 2013-11-14 14:44:20 +09:00
sunxvr500.c Drivers: video: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
sunxvr1000.c video: sunxvr1000: Remove redundant dev_set_drvdata 2013-09-26 13:49:26 +03:00
sunxvr2500.c Drivers: video: remove __dev* attributes. 2013-01-03 15:57:01 -08:00
svgalib.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
syscopyarea.c
sysfillrect.c
sysimgblt.c video: Remove unnecessary semicolons 2013-10-30 13:34:52 +02:00
tcx.c video: Remove unnecessary semicolons 2013-10-30 13:34:52 +02:00
tdfxfb.c video: tdfxfb: remove unnecessary pci_set_drvdata() 2013-09-19 13:30:10 +03:00
tgafb.c tgafb: potential NULL dereference in init 2014-01-17 10:57:48 +02:00
tmiofb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
tridentfb.c video: tridentfb: remove unnecessary pci_set_drvdata() 2013-09-19 13:30:10 +03:00
udlfb.c treewide: Fix typos in printk 2013-12-19 15:10:49 +01:00
uvesafb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
valkyriefb.c m68k: Remove superfluous inclusions of <asm/bootinfo.h> 2013-11-26 11:09:22 +01:00
valkyriefb.h
vesafb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
vfb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
vga16fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
vgastate.c
videomode.c videomode: videomode_from_timing work 2013-03-21 14:34:33 +02:00
vt8500lcdfb.c video: vt8500: fix error handling in probe() 2013-12-04 10:50:16 +02:00
vt8500lcdfb.h
vt8623fb.c PCI: Convert pcibios_resource_to_bus() to take a pci_bus, not a pci_dev 2013-12-21 10:06:10 -07:00
w100fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
w100fb.h
wm8505fb_regs.h
wm8505fb.c framebuffer: Use fb_<level> 2013-10-29 12:53:07 +02:00
wmt_ge_rops.c video: wmt_ge_rops: Fix a trivial typo 2013-10-09 12:35:46 +03:00
wmt_ge_rops.h video: vt8500: Make wmt_ge_rops optional 2013-04-04 13:07:33 +03:00
xen-fbfront.c xen/fb: allow xenfb initialization for hvm guests 2014-01-07 09:59:54 -05:00
xilinxfb.c video: xilinxfb: Fix for "Use standard variable name convention" 2013-10-29 10:49:40 +02:00