Dave Airlie d8636a2717 fbcon: fix race condition between console lock and cursor timer (v1.1) ... So we've had a fair few reports of fbcon handover breakage between efi/vesafb and i915 surface recently, so I dedicated a couple of days to finding the problem. Essentially the last thing we saw was the conflicting framebuffer message and that was all. So after much tracing with direct netconsole writes (printks under console_lock not so useful), I think I found the race. Thread A (driver load) Thread B (timer thread) unbind_con_driver -> | bind_con_driver -> | vc->vc_sw->con_deinit -> | fbcon_deinit -> | console_lock() | | | | fbcon_flashcursor timer fires | console_lock() <- blocked for A | | fbcon_del_cursor_timer -> del_timer_sync (BOOM) Of course because all of this is under the console lock, we never see anything, also since we also just unbound the active console guess what we never see anything. Hopefully this fixes the problem for anyone seeing vesafb->kms driver handoff. v1.1: add comment suggestion from Alan. Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>		2012-08-22 14:00:35 +10:00
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aty	fbdev updates for 3.6	2012-08-01 10:45:12 -07:00
backlight	Merge branch 'akpm' (Andrew's patch-bomb)	2012-07-30 17:25:34 -07:00
console	fbcon: fix race condition between console lock and cursor timer (v1.1)	2012-08-22 14:00:35 +10:00
exynos	fbdev updates for 3.6	2012-08-01 10:45:12 -07:00
geode
i810
intelfb	drivers/video/intelfb/intelfbdrv.c: add missing agp_backend_release	2012-05-13 13:05:24 +00:00
kyro	kyrofb: fix on x86_64	2012-04-08 14:27:08 +00:00
logo
matrox	i2c: Split I2C_M_NOSTART support out of I2C_FUNC_PROTOCOL_MANGLING	2012-05-30 10:55:34 +02:00
mb862xx	video: mb862xxfbdrv.c: local functions should not be exposed globally	2012-05-08 16:57:30 +00:00
mbx	drivers/video: use correct __devexit_p annotation	2012-06-09 12:51:11 +00:00
msm	video: msm: Fix section mismatches in mddi.c	2012-04-18 17:10:34 +00:00
nvidia
omap	OMAPFB: remove unused FB_OMAP_BOOTLOADER_INIT config option	2012-04-23 10:48:09 +03:00
omap2	Merge branch 'for-florian' of git://gitorious.org/linux-omap-dss2/linux into fbdev-next	2012-07-25 08:55:46 +00:00
pnx4008
riva
savage	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-07-24 13:34:56 -07:00
sis	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-07-24 13:34:56 -07:00
vermilion
via	video/via: Convert to kstrtou8_from_user	2012-05-08 17:00:12 +00:00
68328fb.c
acornfb.c
acornfb.h
amba-clcd.c
amifb.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
arcfb.c	video: Fix typo in drivers/video	2012-07-24 12:58:15 +02:00
arkfb.c
asiliantfb.c
atafb.c
atafb.h
atafb_iplan2p2.c
atafb_iplan2p4.c
atafb_iplan2p8.c
atafb_mfb.c
atafb_utils.h
atmel_lcdfb.c	video: Fix typo in drivers/video	2012-07-24 12:58:15 +02:00
au1100fb.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-05-22 19:22:50 -07:00
au1100fb.h
au1200fb.c	fbdev: fix au1*fb builds	2012-04-08 14:27:09 +00:00
au1200fb.h
auo_k190x.c	video: auo_k190x: add code shared by controller drivers	2012-04-29 19:35:35 +00:00
auo_k190x.h	video: auo_k190x: add code shared by controller drivers	2012-04-29 19:35:35 +00:00
auo_k1900fb.c	video: auo_k190x: add driver for AUO-K1900 variant	2012-04-29 19:35:40 +00:00
auo_k1901fb.c	video: auo_k190x: add driver for AUO-K1901 variant	2012-04-29 19:35:42 +00:00
bf54x-lq043fb.c
bf537-lq035.c
bfin-lq035q1-fb.c	blackfin: fix compile error in bfin-lq035q1-fb.c	2012-04-26 14:46:51 -04:00
bfin-t350mcqb-fb.c
bfin_adv7393fb.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-07-24 13:34:56 -07:00
bfin_adv7393fb.h
broadsheetfb.c	drivers/video: use correct __devexit_p annotation	2012-06-09 12:51:11 +00:00
bt431.h	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
bt455.h	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
bw2.c
c2p.h
c2p_core.h
c2p_iplan2.c
c2p_planar.c
carminefb.c
carminefb.h
carminefb_regs.h
cfbcopyarea.c
cfbfillrect.c
cfbimgblt.c
cg3.c
cg6.c
cg14.c
chipsfb.c
cirrusfb.c	video: Fix typo in drivers/video	2012-07-24 12:58:15 +02:00
clps711xfb.c	ARM: clps711x: Using a single definition for the PHYS and VIRT registers offset	2012-05-11 16:18:01 +02:00
cobalt_lcdfb.c	cobalt_lcdfb: LCD panel framebuffer support for SEAD-3 platform.	2012-04-29 19:34:05 +00:00
controlfb.c
controlfb.h
cyber2000fb.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
cyber2000fb.h
da8xx-fb.c	da8xx-fb: fix compile issue due to missing include	2012-07-29 16:47:40 +00:00
dnfb.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
edid.h
efifb.c	vga: fix build when fbdev is a module	2012-04-24 09:50:21 +01:00
ep93xx-fb.c	drivers/video/ep93xx-fb.c: clean up error-handling code	2012-04-21 21:47:49 +00:00
epson1355fb.c	fb: epson1355fb: Fix section mismatch	2012-07-24 20:54:35 +00:00
fb-puv3.c
fb_ddc.c
fb_defio.c	fb_defio: Push file_update_time() into fb_deferred_io_mkwrite()	2012-07-31 01:02:44 +04:00
fb_draw.h	fbdev: Make pixel_to_pat() failure mode more friendly	2012-07-29 12:25:06 +00:00
fb_notify.c
fb_sys_fops.c
fbcmap.c
fbcvt.c
fbmem.c	fbdev: add events for early fb event support	2012-05-29 16:22:28 -07:00
fbmon.c
fbsysfs.c	fb: handle NULL pointers in framebuffer release	2012-05-29 13:00:03 +00:00
ffb.c
fm2fb.c
fsl-diu-fb.c	drivers/video: fsl-diu-fb: don't initialize the THRESHOLDS registers	2012-05-13 13:08:56 +00:00
g364fb.c
gbefb.c
grvga.c	grvga: Fix error handling issues	2012-07-08 14:03:17 +00:00
gxt4500.c
hecubafb.c
hgafb.c
hitfb.c
hpfb.c
i740_reg.h
i740fb.c	video: Fix typo in drivers/video	2012-07-24 12:58:15 +02:00
igafb.c
imsttfb.c
imxfb.c	video imxfb: do not depend on grouped clocks	2012-04-25 17:03:37 +02:00
jz4740_fb.c
Kconfig	video: auo_k190x: add driver for AUO-K1901 variant	2012-04-29 19:35:42 +00:00
leo.c
macfb.c
macmodes.c
macmodes.h
Makefile	video: auo_k190x: add driver for AUO-K1901 variant	2012-04-29 19:35:42 +00:00
maxinefb.c
metronomefb.c
modedb.c
mx3fb.c	mx3fb: avoid screen flash when panning with fb_set_var	2012-06-27 06:59:51 +00:00
mxsfb.c	video: mxsfb: add simple device tree probe	2012-07-03 13:22:37 +08:00
n411.c
neofb.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
nuc900fb.c
nuc900fb.h
offb.c
output.c
p9100.c
platinumfb.c
platinumfb.h
pm2fb.c
pm3fb.c
pmag-aa-fb.c
pmag-ba-fb.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
pmagb-b-fb.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
ps3fb.c
pvr2fb.c	drivers/video/pvr2fb.c: ensure arguments to request_irq and free_irq are compatible	2012-03-13 23:17:31 +00:00
pxa3xx-gcu.c	video: pxa3xx-gcu: Simplify the logic to exit while loop in pxa3xx_gcu_wait_idle	2012-04-09 16:18:15 +00:00
pxa3xx-gcu.h
pxa168fb.c
pxa168fb.h
pxafb.c	video: pxafb: add clk_prepare/clk_unprepare calls	2012-03-21 10:29:01 +00:00
pxafb.h
q40fb.c	Remove all #inclusions of asm/system.h	2012-03-28 18:30:03 +01:00
s1d13xxxfb.c
s3c-fb.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-07-24 13:34:56 -07:00
s3c2410fb.c
s3c2410fb.h
s3fb.c	s3fb: Add Virge/MX (86C260)	2012-07-08 14:03:50 +00:00
sa1100fb.c
sa1100fb.h
sbuslib.c
sbuslib.h
sgivwfb.c
sh7760fb.c
sh_mipi_dsi.c	fbdev: sh_mipi_dsi: fix a section mismatch	2012-06-20 10:02:53 +02:00
sh_mobile_hdmi.c	fbdev: sh_mobile_hdmi: add HDMI Control Register support	2012-05-13 13:07:59 +00:00
sh_mobile_lcdcfb.c	fbdev: sh_mobile_lcdc: Fix vertical panning step	2012-07-29 01:17:07 +00:00
sh_mobile_lcdcfb.h	fbdev: sh_mobile_lcdc: Fix pan offset computation in YUV mode	2012-07-19 12:15:26 +02:00
sh_mobile_meram.c	sh_mobile_meram: Add direct MERAM allocation API	2012-07-19 02:05:22 +02:00
skeletonfb.c	skeletonfb: fixed module exit function typo.	2012-04-15 21:44:02 +00:00
sm501fb.c
smscufx.c	fbdev updates for 3.6	2012-08-01 10:45:12 -07:00
sstfb.c
sticore.h
stifb.c
sunxvr500.c	video: Fix typo in drivers/video	2012-07-24 12:58:15 +02:00
sunxvr1000.c
sunxvr2500.c
svgalib.c
syscopyarea.c
sysfillrect.c
sysimgblt.c
tcx.c
tdfxfb.c
tgafb.c
tmiofb.c
tridentfb.c
udlfb.c	fbdev updates for 3.5	2012-06-01 16:57:51 -07:00
uvesafb.c	connector/userns: replace netlink uses of cap_raised() with capable()	2012-05-10 23:21:39 -04:00
valkyriefb.c
valkyriefb.h
vesafb.c
vfb.c
vga16fb.c
vgastate.c
vt8500lcdfb.c
vt8500lcdfb.h
vt8623fb.c
w100fb.c	video: w100fb: Reduce sleep mode battery discharge	2012-07-08 14:03:02 +00:00
w100fb.h
wm8505fb.c
wm8505fb_regs.h
wmt_ge_rops.c
wmt_ge_rops.h
xen-fbfront.c	drivers/video/xen-fbfront.c: add missing cleanup code	2012-05-07 06:41:56 -04:00
xilinxfb.c