tree 9e57362eea27c60a1a8870ed21767dbf89a37867
parent e96e2f148060330f6178b502574dcb81eb7318bf
author Jon Smirl <[EMAIL PROTECTED]> Sat, 30 Jul 2005 02:16:17 -0700
committer Linus Torvalds <[EMAIL PROTECTED]> Sat, 30 Jul 2005 03:12:51 -0700
[PATCH] PCI: Adjust PCI rom code to handle more broken ROMs
There are ROMs reporting that their size exceeds their PCI ROM
resource window. This patch returns the minimum of the resource window
size or the size in the ROM. An example of this breakage is the XGI
Volari Z7.
Signed-off-by: Jon Smirl <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
drivers/pci/rom.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c
@@ -125,7 +125,9 @@ void __iomem *pci_map_rom(struct pci_dev
image += readw(pds + 16) * 512;
} while (!last_image);
- *size = image - rom;
+ /* never return a size larger than the PCI resource window */
+ /* there are known ROMs that get the size wrong */
+ *size = min((size_t)(image - rom), *size);
return rom;
}
-
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