Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8b966dddc29899008fb178a533263afa8d1ad849
Commit: 8b966dddc29899008fb178a533263afa8d1ad849
Parent: 8af12cdb7c4aa9ed278ed71a8b5b130f2d8c8920
Author: Mikael Pettersson <[EMAIL PROTECTED]>
AuthorDate: Sat Mar 3 20:57:44 2007 +0100
Committer: Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Tue Mar 6 04:04:30 2007 -0500
pata_legacy: fix io/irq mismatch
pata_legacy fails to detect the disk on my old ISA/VLB 486:
it starts to probe io=0x1f0 ctr=0x3f6 irq=15, complains
loudly about IDENTIFYs timing out, and finally fails.
(Sorry I couldn't capture the kernel's boot messages.)
It turns out that the driver's mapping from io to irq in
legacy_irq[] is wrong: index 0 for io=0x1f0 has irq=15 but
should have irq=14, and index 1 for io=0x170 has irq=14 but
should have irq=15. This is confirmed by a comparison with
include/asm-i386/ide.h:ide_default_irq().
This patch swaps the first two elements in legacy_irq[],
which makes pata_legacy work on my 486.
Signed-off-by: Mikael Pettersson <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
drivers/ata/pata_legacy.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c
index fc5b73d..86fbcd6 100644
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -69,7 +69,7 @@
#define NR_HOST 6
static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
-static int legacy_irq[NR_HOST] = { 15, 14, 11, 10, 8, 12 };
+static int legacy_irq[NR_HOST] = { 14, 15, 11, 10, 8, 12 };
struct legacy_data {
unsigned long timing;
-
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