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authorBjorn Helgaas <bjorn.helgaas@hp.com>2006-04-07 22:47:12 -0700
committerTony Luck <tony.luck@intel.com>2006-04-07 22:47:12 -0700
commit2db8d99ffdbed7d2beb1bbdefdcd086dda9dee98 (patch)
treed1d6b013f5e43c8210871cfb2c7b66bf1adbb93c
parentcfab9d0e1da8e08a39759d0fc3bf5e40f0ac2d55 (diff)
downloadop-kernel-dev-2db8d99ffdbed7d2beb1bbdefdcd086dda9dee98.zip
op-kernel-dev-2db8d99ffdbed7d2beb1bbdefdcd086dda9dee98.tar.gz
[IA64] always map VGA framebuffer UC, even if it supports WB
EFI on some machines, e.g., Intel Tiger, reports that the VGA framebuffer supports WB access. ioremap() prefers WB when possible, so it can work when mapping main memory. But it doesn't make sense to map a framebuffer WB, because the driver doesn't flush explicitly, so updates won't make it to the device immediately. This is due to Zou Nan hai <nanhai.zou@intel.com>. More extensive fix that adds a "size" argument coming soon. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
-rw-r--r--include/asm-ia64/vga.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-ia64/vga.h b/include/asm-ia64/vga.h
index bc3349f..091177c 100644
--- a/include/asm-ia64/vga.h
+++ b/include/asm-ia64/vga.h
@@ -17,7 +17,7 @@
extern unsigned long vga_console_iobase;
extern unsigned long vga_console_membase;
-#define VGA_MAP_MEM(x) ((unsigned long) ioremap(vga_console_membase + (x), 0))
+#define VGA_MAP_MEM(x) ((unsigned long) ioremap_nocache(vga_console_membase + (x), 0))
#define vga_readb(x) (*(x))
#define vga_writeb(x,y) (*(y) = (x))
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