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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-05-22 16:23:37 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2009-06-15 09:40:09 -0700
commite00f8a824904848780c649c86947366f50c8623c (patch)
tree357a84802a0ce188b0e786c09471a4e2ff4b472c
parentf9384896632d37a575ce544e6dea09f2a1ef4a04 (diff)
ide: fix OOPS during ide-cd error recovery
commit e3b29f05124b07303088795396ff858811d2acb8 upstream. On Tuesday 19 May 2009 20:29:28 Martin Lottermoser wrote: > hdc: cdrom_decode_status: error=0x40 <3>{ LastFailedSense=0x04 } > ide: failed opcode was: unknown > hdc: DMA disabled > ------------[ cut here ]------------ > kernel BUG at drivers/ide/ide-io.c:872! It is possible for ide-cd to ignore ide_error()'s return value under some circumstances. Workaround it in ide_intr() and ide_timer_expiry() by checking if there is a device/port reset pending currently. Fixes bug #13345: http://bugzilla.kernel.org/show_bug.cgi?id=13345 Reported-by: Martin Lottermoser <Martin.Lottermoser@t-online.de> Reported-and-tested-by: Modestas Vainius <modestas@vainius.eu> Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/ide/ide-io.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index af7077765d5f..ff8229cdd569 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -967,7 +967,7 @@ void ide_timer_expiry (unsigned long data)
}
spin_lock_irq(&hwif->lock);
enable_irq(hwif->irq);
- if (startstop == ide_stopped) {
+ if (startstop == ide_stopped && hwif->polling == 0) {
ide_unlock_port(hwif);
plug_device = 1;
}
@@ -1145,7 +1145,7 @@ irqreturn_t ide_intr (int irq, void *dev_id)
* same irq as is currently being serviced here, and Linux
* won't allow another of the same (on any CPU) until we return.
*/
- if (startstop == ide_stopped) {
+ if (startstop == ide_stopped && hwif->polling == 0) {
BUG_ON(hwif->handler);
ide_unlock_port(hwif);
plug_device = 1;