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[PATCH] cyber2010 framebuffer on ARM Netwinder fix

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The Netwinder machines with Cyber2010 crash badly when starting Xserver.
The workaround is to disable pci burst option for this revision of video
chip.

[akpm@osdl.org: cleanup]
Signed-off-by: Woody Suwalski <woodys@xandros.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: James Simmons <jsimmons@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Woody Suwalski 2007-02-12 00:55:00 -08:00 committed by Linus Torvalds
parent 3a0991029b
commit cd792aa896
1 changed files with 12 additions and 7 deletions
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19
drivers/video/cyber2000fb.c
View file

@ -1539,16 +1539,21 @@ static int cyberpro_pci_enable_mmio(struct cfb_info *cfb)
/*
* Allow the CyberPro to accept PCI burst accesses
*/
val = cyber2000_grphr(EXT_BUS_CTL, cfb);
if (!(val & EXT_BUS_CTL_PCIBURST_WRITE)) {
printk(KERN_INFO "%s: enabling PCI bursts\n", cfb->fb.fix.id);
if (cfb->id == ID_CYBERPRO_2010) {
printk(KERN_INFO "%s: NOT enabling PCI bursts\n", cfb->fb.fix.id);
} else {
val = cyber2000_grphr(EXT_BUS_CTL, cfb);
if (!(val & EXT_BUS_CTL_PCIBURST_WRITE)) {
printk(KERN_INFO "%s: enabling PCI bursts\n",
cfb->fb.fix.id);
val |= EXT_BUS_CTL_PCIBURST_WRITE;
val |= EXT_BUS_CTL_PCIBURST_WRITE;
if (cfb->id == ID_CYBERPRO_5000)
val |= EXT_BUS_CTL_PCIBURST_READ;
if (cfb->id == ID_CYBERPRO_5000)
val |= EXT_BUS_CTL_PCIBURST_READ;
cyber2000_grphw(EXT_BUS_CTL, val, cfb);
cyber2000_grphw(EXT_BUS_CTL, val, cfb);
}
}
return 0;