Messages in this thread Patch in this message | | | Date | Tue, 29 Apr 2008 14:20:23 +0100 | From | Alan Cox <> | Subject | [PATCH] toshiba: Use ioremap_cached |
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The switch of ioremap to default to uncached doesn't break this driver but it does needlessly slow it down as BIOS space is cachable and this driver is quite happy scanning cached ROM space.
Signed-off-by: Alan Cox <alan@redhat.com>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.25-mm1/drivers/char/toshiba.c linux-2.6.25-mm1/drivers/char/toshiba.c --- linux.vanilla-2.6.25-mm1/drivers/char/toshiba.c 2008-04-28 11:36:48.000000000 +0100 +++ linux-2.6.25-mm1/drivers/char/toshiba.c 2008-04-28 11:51:54.000000000 +0100 @@ -426,7 +426,7 @@ int i,major,minor,day,year,month,flag; unsigned char signature[7] = { 0x54,0x4f,0x53,0x48,0x49,0x42,0x41 }; SMMRegisters regs; - void __iomem *bios = ioremap(0xf0000, 0x10000); + void __iomem *bios = ioremap_cache(0xf0000, 0x10000); if (!bios) return -ENOMEM;
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