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    [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use · 4f1bcaf0
    Bjorn Helgaas 提交于
    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: NBjorn Helgaas <bjorn.helgaas@hp.com>
    Cc: "Antonino A. Daplas" <adaplas@pol.net>
    Cc: "Luck, Tony" <tony.luck@intel.com>
    Signed-off-by: NAndrew Morton <akpm@osdl.org>
    Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
    4f1bcaf0
vga.h 379 字节