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authorJeff Garzik <jgarzik@pobox.com>2005-11-11 05:51:24 -0500
committerJeff Garzik <jgarzik@pobox.com>2005-11-11 05:51:24 -0500
commit3b621ee5df437d3f332a635ab6421aaa61a7dc2b (patch)
treec4a5236cee8eb7418770802313d36a55f1cc0b1e /include/asm-i386/ide.h
parent7211bb9b64f17b23834d91fc3d0c1d78671ee9a8 (diff)
parent5e04e7fe774794b837e1d3897e6b96ae2d06679a (diff)
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Merge branch 'master'
Diffstat (limited to 'include/asm-i386/ide.h')
-rw-r--r--include/asm-i386/ide.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-i386/ide.h b/include/asm-i386/ide.h
index 79dfab8..4544401 100644
--- a/include/asm-i386/ide.h
+++ b/include/asm-i386/ide.h
@@ -41,6 +41,12 @@ static __inline__ int ide_default_irq(unsigned long base)
static __inline__ unsigned long ide_default_io_base(int index)
{
+ /*
+ * If PCI is present then it is not safe to poke around
+ * the other legacy IDE ports. Only 0x1f0 and 0x170 are
+ * defined compatibility mode ports for PCI. A user can
+ * override this using ide= but we must default safe.
+ */
if (pci_find_device(PCI_ANY_ID, PCI_ANY_ID, NULL) == NULL) {
switch(index) {
case 2: return 0x1e8;