unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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kernel-hacking-2024-linux-s.../drivers/video
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Helge Deller 04a3f959f6 stifb: detect cards in double buffer mode more reliably 
Visualize-EG, Graffiti and A4450A graphics cards on PARISC can
be configured in double-buffer and standard mode, but the stifb
driver supports standard mode only.
This patch detects double-buffered cards more reliable.

It is a real bugfix for a very nasty problem for all parisc users which have
wrongly configured their graphic card.  The problem: The stifb graphics driver
will not detect that the card is wrongly configured and then nevertheless just
enables the graphics mode, which it shouldn't.  In the end, the user will see
no further updates / boot messages on the screen.

We had documented this problem already on our FAQ
(http://parisc-linux.org/faq/index.html#viseg "Why do I get corrupted graphics
with my Vis-EG/Graffiti/A4450A card?") but people still run into this problem.
 So having this fix in as early as possible can help us.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Cc: <stable@kernel.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-11 15:47:40 -07:00
..
aty Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight 2007-07-22 11:19:46 -07:00
backlight Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight 2007-07-22 11:19:46 -07:00
console fbcon: Fix typo and bogus logic in get_default_font 2007-07-31 15:39:37 -07:00
display make drivers/video/display/display-sysfs.c:display_class static 2007-05-08 11:15:26 -07:00
geode lxfb: GEODE: Add framebuffer support for the AMD Geode LX 2007-07-31 15:39:37 -07:00
i810 i810fb: the pseudo_palette is only 16 elements long 2007-07-17 10:23:12 -07:00
intelfb intelfb: the pseudo_palette is only 16 elements long 2007-07-17 10:23:12 -07:00
kyro PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
logo Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild 2007-07-19 14:28:19 -07:00
matrox drivers/*: mark variables with uninitialized_var() 2007-07-17 16:23:19 -04:00
mbx
nvidia Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight 2007-07-22 11:19:46 -07:00
omap OMAP: LCD panel support for the Siemens SX1 mobile phone 2007-07-17 10:23:15 -07:00
pnx4008
riva Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight 2007-07-22 11:19:46 -07:00
savage some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
sis sisfb: fix pseudo_palette array size and overrun 2007-07-17 10:23:13 -07:00
vermilion vmlfb: framebuffer driver for Intel Vermilion Range 2007-05-08 11:15:32 -07:00
68328fb.c 68328fb: the pseudo_palette is only 16 elements long 2007-07-17 10:23:11 -07:00
acornfb.c Remove the arm26 port 2007-07-31 15:39:39 -07:00
acornfb.h
amba-clcd.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
amifb.c
arcfb.c arcfb: use fb_sys_read() 2007-05-08 11:15:30 -07:00
arkfb.c vt8623fb: arkfb: null pointer dereference fix 2007-06-01 08:18:28 -07:00
asiliantfb.c
atafb.c
atafb.h
atafb_iplan2p2.c
atafb_iplan2p4.c
atafb_iplan2p8.c
atafb_mfb.c
atafb_utils.h
atmel_lcdfb.c atmel_lcdfb: use spare bits in 32bpp mode as alpha channel 2007-07-21 17:49:17 -07:00
au1100fb.c
au1100fb.h
au1200fb.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
au1200fb.h
bt431.h
bt455.h
bw2.c [VIDEO]: Fix OOPS in all SBUS framebuffer drivers. 2007-07-30 00:27:33 -07:00
c2p.c
c2p.h
cfbcopyarea.c fbdev: consolidate common drawing functions into a header file 2007-05-08 11:15:30 -07:00
cfbfillrect.c fbdev: consolidate common drawing functions into a header file 2007-05-08 11:15:30 -07:00
cfbimgblt.c
cg3.c [VIDEO]: Fix OOPS in all SBUS framebuffer drivers. 2007-07-30 00:27:33 -07:00
cg6.c [CG6]: fix memory size detection 2007-08-03 14:08:26 -07:00
cg14.c [VIDEO]: Fix OOPS in all SBUS framebuffer drivers. 2007-07-30 00:27:33 -07:00
chipsfb.c chipsfb: use correct pm state 2007-07-26 11:35:18 -07:00
cirrusfb.c cirrusfb: convert to generic boolean 2007-05-08 11:15:28 -07:00
clps711xfb.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
controlfb.c controlfb: the pseudo_palette is only 16 elements long 2007-07-17 10:23:11 -07:00
controlfb.h
cyber2000fb.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
cyber2000fb.h
cyblafb.c cyblafb: fix pseudo_palette array overrun in setcolreg 2007-07-17 10:23:12 -07:00
dnfb.c
edid.h
epson1355fb.c fb: epson1355fb: kill off dead sh support 2007-07-17 10:23:13 -07:00
fb_ddc.c
fb_defio.c fbdev: kill sparse warning in deferred IO 2007-05-08 11:15:29 -07:00
fb_draw.h fbdev: consolidate common drawing functions into a header file 2007-05-08 11:15:30 -07:00
fb_notify.c
fb_sys_fops.c fbdev: add fb_read/fb_write functions for framebuffers in system RAM 2007-05-08 11:15:30 -07:00
fbcmap.c
fbcvt.c
fbmem.c fbdev: Fix logo if logo depth is less than framebuffer depth 2007-07-31 15:39:37 -07:00
fbmon.c fbdev: add Ultrasharp UXGA to broken monitor database 2007-05-08 11:15:26 -07:00
fbsysfs.c fbdev: fix obvious bug in show_pan() 2007-05-08 11:15:26 -07:00
ffb.c [VIDEO]: Fix OOPS in all SBUS framebuffer drivers. 2007-07-30 00:27:33 -07:00
fm2fb.c fm2fb: the pseudo_palette is only 16 elements long 2007-07-17 10:23:12 -07:00
g364fb.c
gbefb.c gbefb: the pseudo_palette is only 16 elements long 2007-07-17 10:23:12 -07:00
gxt4500.c
hecubafb.c hecubafb: use fb_sys_read() 2007-05-08 11:15:30 -07:00
hgafb.c
hitfb.c
hpfb.c
igafb.c [SPARC]: Fix serial console device detection. 2007-07-20 16:59:26 -07:00
imacfb.c
imsttfb.c
imxfb.c imxfb: fix memory hole 2007-05-23 20:14:13 -07:00
imxfb.h
Kconfig remove tx3912fb 2007-07-31 15:39:41 -07:00
leo.c [VIDEO]: Fix OOPS in all SBUS framebuffer drivers. 2007-07-30 00:27:33 -07:00
macfb.c macfb: fix pseudo_palette size and overrun 2007-07-17 10:23:12 -07:00
macmodes.c drivers/video/macmodes.c:mac_find_mode() mustn't be __devinit 2007-07-17 10:23:13 -07:00
macmodes.h drivers/video/macmodes.c:mac_find_mode() mustn't be __devinit 2007-07-17 10:23:13 -07:00
Makefile remove tx3912fb 2007-07-31 15:39:41 -07:00
maxinefb.c
modedb.c VIDEO: add spaces on either side of the case "..." operator 2007-05-08 11:15:28 -07:00
neofb.c neofb: Fix pseudo_palette array overrun in neofb_setcolreg 2007-05-31 07:48:27 -07:00
offb.c offb: the pseudo_palette is only 16 elements long 2007-07-17 10:23:12 -07:00
output.c
p9100.c [VIDEO]: Fix OOPS in all SBUS framebuffer drivers. 2007-07-30 00:27:33 -07:00
platinumfb.c platinumfb: the pseudo_palette is only 16 elements long 2007-07-17 10:23:12 -07:00
platinumfb.h
pm2fb.c pm2fb: white spaces clean up 2007-07-17 10:23:11 -07:00
pm3fb.c pm3fb: possible cleanups 2007-07-17 10:23:13 -07:00
pmag-aa-fb.c
pmag-ba-fb.c
pmagb-b-fb.c
ps3fb.c ps3fb: Set FBINFO_READS_FAST to speed up text console scrolling 2007-07-21 17:49:16 -07:00
pvr2fb.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
pxafb.c VIDEO: add spaces on either side of the case "..." operator 2007-05-08 11:15:28 -07:00
pxafb.h
q40fb.c q40fb: the pseudo_palette is only 16 elements long 2007-07-17 10:23:12 -07:00
s1d13xxxfb.c
s3c2410fb.c s3c2410fb: fix s3c2410 compilation 2007-07-31 15:39:37 -07:00
s3c2410fb.h s3c2410fb: fix s3c2410 compilation 2007-07-31 15:39:37 -07:00
s3fb.c svgalib: move fb_get_caps to svgalib 2007-05-09 12:30:57 -07:00
sa1100fb.c
sa1100fb.h
sbuslib.c [SPARC]: Mark SBUS framebuffer ioctls as IGNORE in compat_ioctl.c 2007-07-30 00:27:36 -07:00
sbuslib.h
sgivwfb.c sgivwfb: the pseudo_palette is only 16 elements long 2007-07-17 10:23:12 -07:00
skeletonfb.c skeletonfb: fix of xxxfb_setup ifdef 2007-06-01 08:18:28 -07:00
sm501fb.c sm501fb printk warning fixes 2007-05-08 11:15:34 -07:00
sstfb.c PCI: Change all drivers to use pci_device->revision 2007-07-11 16:02:10 -07:00
sticore.h
stifb.c stifb: detect cards in double buffer mode more reliably 2007-08-11 15:47:40 -07:00
sunxvr500.c [VIDEO] sunxvr500fb: Fix pseudo_palette array size 2007-06-05 13:15:26 -07:00
sunxvr2500.c [VIDEO] sunxvr2500fb: Fix pseudo_palette array size 2007-06-05 13:15:01 -07:00
svgalib.c svgalib: move fb_get_caps to svgalib 2007-05-09 12:30:57 -07:00
syscopyarea.c fbdev: consolidate common drawing functions into a header file 2007-05-08 11:15:30 -07:00
sysfillrect.c fbdev: consolidate common drawing functions into a header file 2007-05-08 11:15:30 -07:00
sysimgblt.c fbdev: add drawing functions for framebuffers in system RAM 2007-05-08 11:15:30 -07:00
tcx.c [VIDEO]: Fix OOPS in all SBUS framebuffer drivers. 2007-07-30 00:27:33 -07:00
tdfxfb.c
tgafb.c drivers/ misc __iomem annotations 2007-07-26 11:11:57 -07:00
tridentfb.c tridentfb: fix pseudo_palette array overrun in setcolreg 2007-07-17 10:23:12 -07:00
valkyriefb.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
valkyriefb.h
vesafb.c
vfb.c vfb: use fb_sys_read() and fb_sys_write() 2007-05-08 11:15:30 -07:00
vga16fb.c vga16fb: actually support widths in multiples of 8 2007-05-08 11:15:33 -07:00
vgastate.c vga: vgastate fix 2007-05-08 11:15:32 -07:00
vt8623fb.c vt8623fb.c: make code static 2007-07-17 10:23:13 -07:00
w100fb.c w100fb: fix compile warnings 2007-05-23 20:14:13 -07:00
w100fb.h
xilinxfb.c xilinxfb: Don't bail if the xilinxfb platform device doesn't have any pdata 2007-07-31 15:39:37 -07:00