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linux-stable/drivers/video
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Paul Mundt 5c1a56b5f6 video: sh_mobile_lcdcfb: Don't attempt to map zero-length scatterlists. 
More aggressive DMA mapping debugging has uncovered a long-standing
buglet in the way that the sh_mobile_lcdcfb driver implements its
deferred I/O callback. When used as a console driver the acceleration
routines are called by the kernel which subsequently cause the deferred
I/O work to be scheduled, resulting in the deferred I/O callback being
entered without any dirty pages on the pagelist (the normal case for
userspace accesses). It's also possible to get in to this situation via
explicit calling of fsync() when nothing has dirtied the region.

Unfortunately it's not sufficient to skip over the callback when the
pagelist is empty given the console driver use case, so instead the
callback has to conditionalize the work for panel updates and DMA
mapping depending on whether anything is resident on the pagelist or
not.

Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-04 15:59:04 +09:00
..
aty atyfb: coding style cleanup 2009-09-23 07:39:50 -07:00
backlight Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight 2009-09-26 10:49:42 -07:00
console vgacon: prevent vgacon_deinit from touching the hardware for inactive consoles. 2009-09-23 07:39:57 -07:00
display device create: video: convert device_create_drvdata to device_create 2008-10-16 09:24:45 -07:00
geode gx1fb: properly alloc cmap and plug cmap leak 2009-02-11 14:25:34 -08:00
i810 i810fb: fix regression with uninitalized fb_info->mm_lock mutex 2009-07-08 09:19:49 -07:00
intelfb intelfb: fix a bug when changing video timing 2009-06-16 19:48:00 -07:00
kyro
logo fbdev: move logo externs to header file 2009-06-16 19:47:57 -07:00
matrox matroxfb: get rid of CONFIG_FB_MATROX_32MB 2009-09-23 07:39:57 -07:00
mb862xx mb862xxfb: use CONFIG_OF instead of CONFIG_PPC_OF 2009-06-16 19:47:59 -07:00
mbx
msm video: includecheck fix: msm, mddi.c 2009-10-08 07:36:39 -07:00
nvidia nvidiafb: fix boot-time printk string 2009-06-23 12:50:05 -07:00
omap omapfb: Blizzard: constify register address tables 2009-10-06 08:31:50 -07:00
pnx4008 [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
riva
savage i2c: Delete many unused adapter IDs 2009-01-26 21:19:52 +01:00
sis sisfb: change SiS_DDC_Port type to SISIOADDRESS 2009-09-23 07:39:57 -07:00
vermilion removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00
via viafb: pass reference to pci device when calling framebuffer_alloc() 2009-09-23 07:39:55 -07:00
68328fb.c 68328fb: fix cmap memory leaks 2009-04-01 08:59:31 -07:00
acornfb.c acornfb: remove fb_mmap function 2009-06-16 19:47:59 -07:00
acornfb.h
amba-clcd.c Remove multiple KERN_ prefixes from printk formats 2009-07-08 10:30:03 -07:00
amifb.c amifb: check fb_alloc_cmap return value and handle failure properly 2009-04-01 08:59:31 -07:00
arcfb.c
arkfb.c arkfb: fix misplaced parentheses 2009-04-01 08:59:32 -07:00
asiliantfb.c asiliantfb: add missing return statement 2009-04-21 13:41:47 -07:00
atafb.c atafb: fix regression with uninitalized fb_info->mm_lock mutex 2009-07-08 09:19:49 -07:00
atafb.h
atafb_iplan2p2.c
atafb_iplan2p4.c
atafb_iplan2p8.c
atafb_mfb.c
atafb_utils.h
atmel_lcdfb.c Merge branches 'arm', 'at91', 'bcmring', 'ep93xx', 'mach-types', 'misc' and 'w90x900' into devel 2009-09-12 12:01:34 +01:00
au1100fb.c drivers/video: add kmalloc NULL tests 2009-09-23 07:39:56 -07:00
au1100fb.h
au1200fb.c platform driver: fix incorrect use of 'platform_bus_type' with 'struct device_driver' 2009-03-24 16:38:25 -07:00
au1200fb.h
bf54x-lq043fb.c fbdev: bf54x-lq043fb: use kzalloc over kmalloc/memset 2009-06-16 19:48:03 -07:00
bfin-t350mcqb-fb.c fbdev: *bfin*: fix __dev{init,exit} markings 2009-06-16 19:48:03 -07:00
broadsheetfb.c [ARM] 5353/1: fbdev: add E-Ink Broadsheet controller support v3 2009-02-10 11:27:59 +00:00
bt431.h
bt455.h
bw2.c bw2: use standard fields for framebuffer physical address and length 2009-06-16 04:56:30 -07:00
c2p.h fbdev: c2p - Rename c2p to c2p_planar 2009-01-12 20:56:32 +01:00
c2p_core.h fbdev: c2p/atafb - Add support for Atari interleaved bitplanes 2009-01-12 20:56:31 +01:00
c2p_iplan2.c fbdev: c2p/atafb - Add support for Atari interleaved bitplanes 2009-01-12 20:56:31 +01:00
c2p_planar.c fbdev: c2p - Rename c2p to c2p_planar 2009-01-12 20:56:32 +01:00
carminefb.c carminefb: fix possible access beyond end of carmine_modedb[] 2009-06-16 19:47:59 -07:00
carminefb.h
carminefb_regs.h
cfbcopyarea.c trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
cfbfillrect.c fbdev: fix fillrect for 24bpp modes 2009-05-06 16:36:10 -07:00
cfbimgblt.c
cg3.c cg3: use standard fields for framebuffer physical address and length 2009-06-16 04:56:34 -07:00
cg6.c cg6: use standard fields for framebuffer physical address and length 2009-06-16 04:56:35 -07:00
cg14.c cg14: use standard fields for framebuffer physical address and length 2009-06-16 04:56:31 -07:00
chipsfb.c chipsfb: remove redundant assignment 2009-06-16 19:47:58 -07:00
cirrusfb.c cirrusfb: do not allow unsupported pixel depth 2009-04-13 15:04:30 -07:00
clps711xfb.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
cobalt_lcdfb.c Update Yoichi Yuasa's e-mail address 2009-07-03 15:45:29 +01:00
controlfb.c powerpc/mm: Rework usage of _PAGE_COHERENT/NO_CACHE/GUARDED 2008-12-21 14:21:16 +11:00
controlfb.h
cyber2000fb.c cyber2000fb.c: use proper method for stopping unload if CONFIG_ARCH_SHARK 2009-06-12 21:46:53 +09:30
cyber2000fb.h
da8xx-fb.c video: includecheck fix: da8xx-fb.c 2009-10-08 07:36:39 -07:00
dnfb.c
edid.h
efifb.c fbdev: add support for handoff from firmware to hw framebuffers 2009-06-16 19:48:00 -07:00
ep93xx-fb.c ep93xx video driver 2009-09-23 07:39:51 -07:00
epson1355fb.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
fb_ddc.c
fb_defio.c const: mark struct vm_struct_operations 2009-09-27 11:39:25 -07:00
fb_draw.h fbdev: fix fillrect for 24bpp modes 2009-05-06 16:36:10 -07:00
fb_notify.c
fb_sys_fops.c
fbcmap.c fbmem: don't call copy_from/to_user() with mutex held 2009-02-05 12:56:46 -08:00
fbcvt.c
fbmem.c Merge branch 'drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-09-30 08:03:00 -07:00
fbmon.c fbmon: work around compiler bug in gcc-2.4.2 2009-07-22 08:49:22 -07:00
fbsysfs.c Revert "fb: Initialize fb_info mutexes in framebuffer_alloc()" 2009-07-08 09:20:11 -07:00
ffb.c sparc: Annotate of_device_id arrays with const or __initdata. 2008-08-31 01:23:17 -07:00
fm2fb.c
fsl-diu-fb.c fsl-diu-fb: fix regression with uninitalized fb_info->mm_lock mutex 2009-07-08 14:18:35 -07:00
fsl-diu-fb.h
g364fb.c
gbefb.c MIPS: gbe: Make needlessly global symbols static in drivers/video/gbefb.c 2009-05-14 13:50:25 +01:00
gxt4500.c pci: use pci_ioremap_bar() in drivers/video 2009-01-06 15:59:26 -08:00
hecubafb.c
hgafb.c
hitfb.c video: hitfb: Move over to dev_pm_ops. 2009-07-07 11:50:57 +09:00
hpfb.c
igafb.c igafb: use framebuffer_alloc() to allocate fb_info struct 2009-06-16 19:47:58 -07:00
imsttfb.c
imxfb.c trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
Kconfig matroxfb: make CONFIG_FB_MATROX_MULTIHEAD=y mandatory 2009-09-23 07:39:56 -07:00
leo.c leo: use standard fields for framebuffer physical address and length 2009-06-16 04:56:37 -07:00
macfb.c macfb annotations and compiler warning fix 2008-12-28 20:00:05 +01:00
macmodes.c
macmodes.h
Makefile ep93xx video driver 2009-09-23 07:39:51 -07:00
maxinefb.c
metronomefb.c metronomefb: Fix warning when building 64bit 2008-10-15 10:19:51 -07:00
modedb.c fbdev: add video modes for resolutions and timings of PAL RGB 2009-06-16 19:47:58 -07:00
mx3fb.c i.MX31: fix framebuffer locking regressions 2009-08-07 10:39:56 -07:00
n411.c
neofb.c neofb: fix sparse warnings 2009-01-06 15:59:27 -08:00
offb.c fbdev: use framebuffer_release() for freeing fb_info structures 2009-06-16 19:48:00 -07:00
output.c video: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:35 -08:00
p9100.c p9100: use standard fields for framebuffer physical address and length 2009-06-16 04:56:38 -07:00
platinumfb.c platinumfb: fix misplaced parenthesis 2009-09-23 07:39:50 -07:00
platinumfb.h
pm2fb.c fbdev: use framebuffer_release() for freeing fb_info structures 2009-06-16 19:48:00 -07:00
pm3fb.c pm3fb: fix sparse warning 2009-01-06 15:59:27 -08:00
pmag-aa-fb.c
pmag-ba-fb.c video: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
pmagb-b-fb.c video: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
ps3fb.c powerpc/cell: Move CBE_IOPTE_* to <asm/cell-regs.h> 2009-08-20 10:29:26 +10:00
pvr2fb.c sh: dma: Make PVR2 DMA configurable. 2009-03-17 09:30:36 +09:00
pxa168fb.c fb: add support of LCD display controller on pxa168/910 (base layer) 2009-06-13 00:09:09 +08:00
pxa168fb.h fb: add support of LCD display controller on pxa168/910 (base layer) 2009-06-13 00:09:09 +08:00
pxafb.c [ARM] pxafb: add accelerator ID for PXA3xx GCU 2009-09-12 00:16:27 +08:00
pxafb.h [ARM] pxafb: add support for overlay1 and overlay2 as framebuffer devices 2008-12-29 18:00:04 +08:00
q40fb.c
s1d13xxxfb.c fbdev: s1d13xxxfb: add accelerated bitblt functions 2009-06-16 19:48:00 -07:00
s3c-fb.c video: s3c_fb.c: fix build with CONFIG_HOTPLUG=n 2009-09-23 07:39:57 -07:00
s3c2410fb.c s3c2410fb: fix clockrate calculation 2009-09-23 07:39:56 -07:00
s3c2410fb.h s3c-fb: CPUFREQ frequency scaling support 2009-06-16 19:47:59 -07:00
s3fb.c s3fb: fix color component length for pseudocolor modes 2009-04-13 15:04:29 -07:00
sa1100fb.c Nicolas Pitre has a new email address 2009-09-15 09:37:12 -07:00
sa1100fb.h sa1100fb: fix color component length for pseudocolor modes 2009-04-13 15:04:29 -07:00
sbuslib.c
sbuslib.h
sgivwfb.c drivers/video/sgivwfb.c: fix memory leaks in removal path 2009-04-01 08:59:30 -07:00
sh7760fb.c fbdev: add mutex for fb_mmap locking 2009-06-30 18:56:00 -07:00
sh_mobile_lcdcfb.c video: sh_mobile_lcdcfb: Don't attempt to map zero-length scatterlists. 2009-11-04 15:59:04 +09:00
skeletonfb.c fbdev: fix color component field length documentation 2009-04-13 15:04:29 -07:00
sm501fb.c sm501fb: fix regression with uninitalized fb_info->mm_lock mutex 2009-07-09 20:44:44 -07:00
sstfb.c sstfb: check fb_alloc_cmap return value and handle failure properly 2009-04-01 08:59:30 -07:00
sticore.h video/console/stico{n,re}.c: make code static 2008-07-26 12:00:12 -07:00
stifb.c Remove multiple KERN_ prefixes from printk formats 2009-07-08 10:30:03 -07:00
sunxvr500.c sunxvr500: fix cmap memory leaks 2009-04-01 08:59:31 -07:00
sunxvr2500.c
svgalib.c
syscopyarea.c
sysfillrect.c fbdev: fix fillrect for 24bpp modes 2009-05-06 16:36:10 -07:00
sysimgblt.c
tcx.c tcx: use standard fields for framebuffer physical address and length 2009-06-16 19:48:00 -07:00
tdfxfb.c i2c: Do not probe for TV chips on Voodoo3 adapters 2009-06-15 18:01:48 +02:00
tgafb.c tgafb: fix cmap memory leak 2009-04-01 08:59:31 -07:00
tmiofb.c drivers/video/tmiofb.c: fix uninitialised return value 2009-09-23 07:39:57 -07:00
tridentfb.c tridentfb: delete acceleration Kconfig option 2009-04-01 08:59:34 -07:00
uvesafb.c uvesafb/connector: Disallow unpliviged users to send netlink packets 2009-10-02 10:54:18 -07:00
valkyriefb.c valkyriefb: check fb_alloc_cmap return value and handle failure properly 2009-04-01 08:59:31 -07:00
valkyriefb.h
vesafb.c fbdev: add support for handoff from firmware to hw framebuffers 2009-06-16 19:48:00 -07:00
vfb.c fbdev: fix color component field length documentation 2009-04-13 15:04:29 -07:00
vga16fb.c vga16fb: remove open_lock mutex 2008-10-16 11:21:42 -07:00
vgastate.c
vt8623fb.c removed unused #include <linux/version.h>'s 2008-08-23 12:14:12 -07:00
w100fb.c w100fb: fix regression with uninitalized fb_info->mm_lock mutex 2009-07-08 09:19:49 -07:00
w100fb.h
xen-fbfront.c xenfb: connect to backend before registering fb 2009-08-27 12:31:18 -07:00
xilinxfb.c fbdev/xilinxfb: Fix improper casting and tighen up probe path 2009-06-17 00:30:02 -06:00