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authorKrzysztof Helt <krzysztof.h1@wp.pl>2008-03-10 11:43:36 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-03-10 18:01:17 -0700
commit3acd9d462062bb332073fde90bf9d118ac5a043d (patch)
treef17fc6b686edfa8b36ba900816c2fbf46987e5d9 /drivers/video/tridentfb.c
parente84290dc79d30af3e95b38e670f80c0b5046bbf2 (diff)
downloadlinux-3acd9d462062bb332073fde90bf9d118ac5a043d.tar.gz
tridentfb: register should be left in non-locked state
Remove locking registers after they are unlocked during switch to/from MMIO mode. This fixes regression on the Blade3D (Trident 9880) caused by the previous patch (probe fixes). Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/tridentfb.c')
-rw-r--r--drivers/video/tridentfb.c12
1 files changed, 0 insertions, 12 deletions
diff --git a/drivers/video/tridentfb.c b/drivers/video/tridentfb.c
index 919ce75db9e..5976a1e4051 100644
--- a/drivers/video/tridentfb.c
+++ b/drivers/video/tridentfb.c
@@ -566,44 +566,32 @@ static inline void write3CE(int reg, unsigned char val)
static void enable_mmio(void)
{
- unsigned char tmp;
-
/* Goto New Mode */
outb(0x0B, 0x3C4);
inb(0x3C5);
/* Unprotect registers */
outb(NewMode1, 0x3C4);
- tmp = inb(0x3C5);
outb(0x80, 0x3C5);
/* Enable MMIO */
outb(PCIReg, 0x3D4);
outb(inb(0x3D5) | 0x01, 0x3D5);
-
- t_outb(NewMode1, 0x3C4);
- t_outb(tmp, 0x3C5);
}
static void disable_mmio(void)
{
- unsigned char tmp;
-
/* Goto New Mode */
t_outb(0x0B, 0x3C4);
t_inb(0x3C5);
/* Unprotect registers */
t_outb(NewMode1, 0x3C4);
- tmp = t_inb(0x3C5);
t_outb(0x80, 0x3C5);
/* Disable MMIO */
t_outb(PCIReg, 0x3D4);
t_outb(t_inb(0x3D5) & ~0x01, 0x3D5);
-
- outb(NewMode1, 0x3C4);
- outb(tmp, 0x3C5);
}
#define crtc_unlock() write3X4(CRTVSyncEnd, read3X4(CRTVSyncEnd) & 0x7F)