[PATCH 3/3] ide: Fix cs5535 driver accessing beyond array boundary

From: Benjamin Herrenschmidt
Date: Wed Oct 17 2007 - 20:57:54 EST


The cs5535 use an incorrect construct to access the other drive
of a pair, causing it to access beyond an array boundary on non-0
interfaces. This fixes it by using the new ide_get_paired_drive()
hepler instead.

Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
---

drivers/ide/pci/cs5535.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-work/drivers/ide/pci/cs5535.c
===================================================================
--- linux-work.orig/drivers/ide/pci/cs5535.c 2007-10-18 10:43:39.000000000 +1000
+++ linux-work/drivers/ide/pci/cs5535.c 2007-10-18 10:44:00.000000000 +1000
@@ -84,7 +84,7 @@ static void cs5535_set_speed(ide_drive_t

/* Set the PIO timings */
if ((speed & XFER_MODE) == XFER_PIO) {
- ide_drive_t *pair = &drive->hwif->drives[drive->dn ^ 1];
+ ide_drive_t *pair = ide_get_paired_drive(drive);
u8 cmd, pioa;

cmd = pioa = speed - XFER_PIO_0;
-
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