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authorRavikiran G Thirumalai <kiran@scalex86.org>2005-08-04 12:53:26 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-08-04 13:00:53 -0700
commit556e58febf90c8cb1da25669d0892bf5fd2ddac2 (patch)
tree427c4e5c414a2308107673d1b5197608426b652b /drivers
parentfd6f31c31825f62eb91f491e8316129e5ce81fc6 (diff)
downloadop-kernel-dev-556e58febf90c8cb1da25669d0892bf5fd2ddac2.zip
op-kernel-dev-556e58febf90c8cb1da25669d0892bf5fd2ddac2.tar.gz
[PATCH] ide: fix kmalloc_node breakage in ide driver
Patch fixes oops caused by ide interfaces not on pci. pcibus_to_node causes the kernel to crash otherwise. Patch also adds a BUG_ON to check if hwif is NULL. Signed-off-by: Christoph Lameter <christoph@lameter.com> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Cc: Andi Kleen <ak@muc.de> Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/ide/ide-probe.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 7df85af..94daf40 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -960,6 +960,15 @@ static void save_match(ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match)
}
#endif /* MAX_HWIFS > 1 */
+static inline int hwif_to_node(ide_hwif_t *hwif)
+{
+ if (hwif->pci_dev)
+ return pcibus_to_node(hwif->pci_dev->bus);
+ else
+ /* Add ways to determine the node of other busses here */
+ return -1;
+}
+
/*
* init request queue
*/
@@ -978,8 +987,7 @@ static int ide_init_queue(ide_drive_t *drive)
* do not.
*/
- q = blk_init_queue_node(do_ide_request, &ide_lock,
- pcibus_to_node(drive->hwif->pci_dev->bus));
+ q = blk_init_queue_node(do_ide_request, &ide_lock, hwif_to_node(hwif));
if (!q)
return 1;
@@ -1048,6 +1056,8 @@ static int init_irq (ide_hwif_t *hwif)
BUG_ON(in_interrupt());
BUG_ON(irqs_disabled());
+ BUG_ON(hwif == NULL);
+
down(&ide_cfg_sem);
hwif->hwgroup = NULL;
#if MAX_HWIFS > 1
@@ -1097,7 +1107,7 @@ static int init_irq (ide_hwif_t *hwif)
spin_unlock_irq(&ide_lock);
} else {
hwgroup = kmalloc_node(sizeof(ide_hwgroup_t), GFP_KERNEL,
- pcibus_to_node(hwif->drives[0].hwif->pci_dev->bus));
+ hwif_to_node(hwif->drives[0].hwif));
if (!hwgroup)
goto out_up;
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