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[PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use

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VGA_MAP_MEM translates to ioremap() on some architectures.  It makes sense
to do this to vga_vram_base, because we're going to access memory between
vga_vram_base and vga_vram_end.

But it doesn't really make sense to map starting at vga_vram_end, because
we aren't going to access memory starting there.  On ia64, which always has
to be different, ioremapping vga_vram_end gives you something completely
incompatible with ioremapped vga_vram_start, so vga_vram_size ends up being
nonsense.

As a bonus, we often know the size up front, so we can use ioremap()
correctly, rather than giving it a zero size.

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: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Bjorn Helgaas
2006-06-22 14:47:32 -07:00
committed by Linus Torvalds
parent d702ccb342
commit 4f1bcaf094
13 changed files with 22 additions and 23 deletions
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4
include/asm-powerpc/vga.h
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@@ -41,9 +41,9 @@ static inline u16 scr_readw(volatile const u16 *addr)
extern unsigned long vgacon_remap_base;
#ifdef __powerpc64__
#define VGA_MAP_MEM(x) ((unsigned long) ioremap((x), 0))
#define VGA_MAP_MEM(x,s) ((unsigned long) ioremap((x), s))
#else
#define VGA_MAP_MEM(x) (x + vgacon_remap_base)
#define VGA_MAP_MEM(x,s) (x + vgacon_remap_base)
#endif
#define vga_readb(x) (*(x))