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Paul Menzel b586640141 intelfb: fix a bug when changing video timing 
When changing video timing dynamically via fbset the screen sporadically
is rendered black.

With the attached fix which disables VCO prior to timing register change
the problem disappears.

I had a look at the Xserver register setup code. Here the VCO is
disabled in the same way [1].

This patch is taken from vga-sync-field version 0.0.11 [2][3].

[1] http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/tree/src/i830_=
driver.c
[2] http://lowbyte.de/vga-sync-fields/vga-sync-fields-0.0.11.tgz
[3] http://easy-vdr.de/git?p=frc.git/.git;a=commit;h=dcc3b863e5a663652587619c357bd20075af6896
2587619c357bd20075af6896

Signed-off-by: Thomas Hilber <sparkie@lowbyte.de>
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2009-06-16 19:48:00 -07:00
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accessibility
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acpi Merge branch 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-10 15:25:41 -07:00
amba
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ata Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-06-14 13:46:25 -07:00
atm
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auxdisplay
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base mm: remove CONFIG_UNEVICTABLE_LRU config option 2009-06-16 19:47:42 -07:00
block Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
bluetooth Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
cdrom
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char console: make blank timeout value a boot option 2009-06-16 19:47:52 -07:00
clocksource time: move PIT_TICK_RATE to linux/timex.h 2009-06-16 19:47:27 -07:00
connector trivial: Kconfig: .ko is normally not included in module names 2009-06-12 18:01:50 +02:00
cpufreq cpumask: alloc zeroed cpumask for static cpumask_var_ts 2009-06-09 22:30:27 +09:30
cpuidle
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crypto Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-06-14 13:46:25 -07:00
dca
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dio
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dma
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edac trivial: fix typos s/paramter/parameter/ and s/excute/execute/ in documentation and source comments. 2009-06-12 18:01:46 +02:00
eisa eisa.ids: add Network Peripherals FDDI boards 2009-06-16 19:47:52 -07:00
firewire
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firmware firmware_map: fix hang with x86/32bit 2009-06-16 19:47:28 -07:00
gpio
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gpu Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-06-12 18:09:18 -07:00
hid Merge branches 'upstream' and 'ntrig-multitouch' into for-linus 2009-06-12 17:42:13 +02:00
hwmon lis3: add click function 2009-06-16 19:47:57 -07:00
i2c Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2009-06-15 09:32:52 -07:00
ide Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-06-14 13:46:25 -07:00
idle
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ieee1394 fs: Remove i_cindex from struct inode 2009-06-11 21:36:09 -04:00
ieee802154 ieee802154: fix kconfig bool/tristate muckup 2009-06-13 23:36:29 -07:00
infiniband Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
input time: move PIT_TICK_RATE to linux/timex.h 2009-06-16 19:47:27 -07:00
isdn Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
leds
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lguest Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguest 2009-06-12 09:32:26 -07:00
macintosh therm_adt746x: Always clear hardware bit which inverts fan speed range. 2009-06-02 10:32:44 +10:00
mca
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md Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block 2009-06-11 11:10:35 -07:00
media videobuf-dma-contig: zero copy USERPTR support 2009-06-16 19:47:40 -07:00
memstick
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message Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
mfd MFD,mmc: tmio_mmc: make HCLK configurable 2009-06-13 22:42:59 +02:00
misc page allocator: do not check NUMA node ID when the caller knows the node is valid 2009-06-16 19:47:32 -07:00
mmc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc 2009-06-14 13:46:57 -07:00
mtd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-06-14 13:46:25 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-06-15 09:40:05 -07:00
nubus
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of Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-06-15 09:40:05 -07:00
oprofile
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parisc
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parport parport_pc: clean up the modified while loops using for 2009-06-11 08:51:03 -07:00
pci Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-06-15 09:40:05 -07:00
pcmcia use printk_once() in several places 2009-06-16 19:47:50 -07:00
platform sony-laptop: no need to unblock rfkill on load 2009-06-10 13:28:37 -04:00
pnp Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-06-12 18:09:18 -07:00
power
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ps3
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rapidio
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regulator regulator/max1586: fix V3 gain calculation integer overflow 2009-06-15 11:18:27 +01:00
rtc Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2009-06-14 13:42:43 -07:00
s390 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
sbus
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scsi Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
serial Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
sh sh: Tie sparseirq in to Kconfig. 2009-06-11 10:33:09 +03:00
sn
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spi spi: takes size of a pointer to determine the size of the pointed-to type 2009-06-16 19:47:27 -07:00
ssb SSB: BCM47xx: Export ssb_watchdog_timer_set 2009-06-08 16:57:50 +01:00
staging Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
tc
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telephony
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thermal
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uio
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usb Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2009-06-15 03:02:23 -07:00
uwb
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video intelfb: fix a bug when changing video timing 2009-06-16 19:48:00 -07:00
virtio virtio: enhance id_matching for virtio drivers 2009-06-12 22:16:40 +09:30
vlynq drivers: add support for the TI VLYNQ bus 2009-06-16 19:47:52 -07:00
w1 trivial: Kconfig: .ko is normally not included in module names 2009-06-12 18:01:50 +02:00
watchdog Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-06-14 13:46:25 -07:00
xen PM core: rename suspend and resume functions 2009-06-12 21:32:31 +02:00
zorro
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Kconfig drivers: add support for the TI VLYNQ bus 2009-06-16 19:47:52 -07:00
Makefile drivers: add support for the TI VLYNQ bus 2009-06-16 19:47:52 -07:00