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Knut Petersen 244ab72d84 [PATCH] fbcon: disable ywrap if not supported by fbcon scrolling code 
updatescrollmode() must not select ywrap scrolling if
divides(vc->vc_font.height, yres) is not true as this is not supported by
the actual ywrap scrolling code.

The bug is triggered with e.g.  mode 800x600, vxres 1024, vyres 8192, bpp
8, font dimensions 8x16, 8Mb video ram and FBINFO_HWACCEL_YWRAP set.  If
those conditions are met, scrolling is broken and garbage is permanently
displayed at the bottom of the screen.

No regression, no possible side effects.

Definitely needed by cyblafb and probably needed by amifb.

Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de>
Acked-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2006-01-10 08:01:50 -08:00
..
acorn [PATCH] Add block_device_operations.getgeo block device method 2006-01-08 20:13:54 -08:00
acpi [PATCH] apci: use pin stored in pci_dev 2006-01-09 12:13:13 -08:00
amba [ARM] Remove asm/irq.h includes from ARM drivers 2006-01-09 13:56:42 +00:00
atm [PATCH] frv: fix uninitialised variable in atm nicstar driver 2006-01-08 20:13:38 -08:00
base [PATCH] kdump: export per cpu crash notes pointer through sysfs (fix) 2006-01-10 08:01:26 -08:00
block Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2006-01-09 18:41:42 -08:00
bluetooth [PATCH] pcmcia: add some IDs for ide-cs and dtl1_cs 2006-01-06 00:31:07 +01:00
cdrom spelling: s/trough/through/ 2006-01-10 00:13:33 +01:00
char [PATCH] don't include ioctl32.h in drivers 2006-01-10 08:01:34 -08:00
connector [PATCH] Switch getnstimestamp() calls to ktime_get_ts() 2006-01-10 08:01:39 -08:00
cpufreq
…
crypto [CRYPTO] Allow AES C/ASM implementations to coexist 2006-01-09 14:15:39 -08:00
dio
…
eisa
…
fc4 [SPARC]: introduce a SPARC Kconfig symbol 2005-12-22 23:09:54 -08:00
firmware
…
hwmon [PATCH] drivers/*rest*: Replace pci_module_init() with pci_register_driver() 2006-01-09 12:13:23 -08:00
i2c Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge 2006-01-09 10:03:44 -08:00
ide [PATCH] mutex subsystem, semaphore to completion: IDE ->gendev_rel_sem 2006-01-09 15:59:27 -08:00
ieee1394 [PATCH] don't include ioctl32.h in drivers 2006-01-10 08:01:34 -08:00
infiniband Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband 2006-01-08 20:18:44 -08:00
input Merge Linus' tree. 2006-01-09 19:18:33 +00:00
isdn [PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem 2006-01-09 15:59:24 -08:00
macintosh spelling: s/retreive/retrieve/ 2006-01-10 00:10:13 +01:00
mca
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md [PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem 2006-01-09 15:59:24 -08:00
media [PATCH] media-radio: Maestro radio delete owner line from video device 2006-01-10 08:01:41 -08:00
message [PATCH] don't include ioctl32.h in drivers 2006-01-10 08:01:34 -08:00
mfd [PATCH] drivers/mfd: header included twice 2006-01-08 20:13:59 -08:00
misc Input: ibmasm - convert to dynamic input_dev allocation 2006-01-07 11:35:05 -05:00
mmc Merge master.kernel.org:/home/rmk/linux-2.6-mmc 2006-01-09 15:08:33 -08:00
mtd Merge Linus' tree. 2006-01-09 19:18:33 +00:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial 2006-01-09 17:06:53 -08:00
nubus
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oprofile [PATCH] oprofile: Use vmalloc_node() in alloc_cpu_buffers() 2006-01-08 20:13:56 -08:00
parisc spelling: s/trough/through/ 2006-01-10 00:13:33 +01:00
parport [PATCH] drivers/*rest*: Replace pci_module_init() with pci_register_driver() 2006-01-09 12:13:23 -08:00
pci Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2006-01-09 18:41:42 -08:00
pcmcia [PATCH] drivers/*rest*: Replace pci_module_init() with pci_register_driver() 2006-01-09 12:13:23 -08:00
pnp [PATCH] x86: Fixed pnp bios limits 2006-01-06 08:33:35 -08:00
rapidio [PATCH] fix more missing includes 2006-01-08 20:13:45 -08:00
s390 [PATCH] don't include ioctl32.h in drivers 2006-01-10 08:01:34 -08:00
sbus
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scsi [PATCH] don't include ioctl32.h in drivers 2006-01-10 08:01:34 -08:00
serial Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2006-01-09 18:41:42 -08:00
sh
…
sn
…
tc
…
telephony [PATCH] pcmcia: unify attach, EVENT_CARD_INSERTION handlers into one probe callback 2006-01-06 00:03:24 +01:00
usb Merge master.kernel.org:/pub/scm/linux/kernel/git/mingo/mutex-2.6 2006-01-09 17:31:38 -08:00
video [PATCH] fbcon: disable ywrap if not supported by fbcon scrolling code 2006-01-10 08:01:50 -08:00
w1 spelling: s/usefull/useful/ 2006-01-10 00:08:17 +01:00
zorro
…
Kconfig
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Makefile [ARM] Move AMBA bus code to drivers/amba/ 2006-01-07 14:54:15 +00:00