[PATCH] matroxfb: Use CACHEFLUSH on all chips
Use the CACHEFLUSH register on all chip types. The register is listed in all
other specs except 2064W. However I have verified that the register does work
on a 2064W despite being marked reserved in the specs. There were no
noticeable side effects after writing to the register.
Signed-off-by: Ville Syrjälä <syrjala@sci.fi>
Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/video/matrox/matroxfb_base.c b/drivers/video/matrox/matroxfb_base.c
index 1734438..a780bb3 100644
--- a/drivers/video/matrox/matroxfb_base.c
+++ b/drivers/video/matrox/matroxfb_base.c
@@ -1283,7 +1283,7 @@
vaddr_t vm;
unsigned int offs;
unsigned int offs2;
- unsigned char store, orig;
+ unsigned char orig;
unsigned char bytes[32];
unsigned char* tmp;
@@ -1299,16 +1299,12 @@
orig = mga_inb(M_EXTVGA_DATA);
mga_outb(M_EXTVGA_DATA, orig | 0x80);
- store = mga_readb(vm, 0x1234);
tmp = bytes;
for (offs = 0x100000; offs < maxSize; offs += 0x200000)
*tmp++ = mga_readb(vm, offs);
for (offs = 0x100000; offs < maxSize; offs += 0x200000)
mga_writeb(vm, offs, 0x02);
- if (ACCESS_FBINFO(features.accel.has_cacheflush))
- mga_outb(M_CACHEFLUSH, 0x00);
- else
- mga_writeb(vm, 0x1234, 0x99);
+ mga_outb(M_CACHEFLUSH, 0x00);
for (offs = 0x100000; offs < maxSize; offs += 0x200000) {
if (mga_readb(vm, offs) != 0x02)
break;
@@ -1319,7 +1315,6 @@
tmp = bytes;
for (offs2 = 0x100000; offs2 < maxSize; offs2 += 0x200000)
mga_writeb(vm, offs2, *tmp++);
- mga_writeb(vm, 0x1234, store);
mga_outb(M_EXTVGA_INDEX, 0x03);
mga_outb(M_EXTVGA_DATA, orig);