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authorTejun Heo <tj@kernel.org>2009-04-19 07:00:41 +0900
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-05-16 19:03:18 +0200
commit36999a5af1b6c5379e59f0ddf434db08d03c19e4 (patch)
tree1664d5927ec972914aac4f2541e2b6f461c3721d
parent96c16743973e8c1a7b9c655d10b7973408d6d1dd (diff)
ide-tape: remove back-to-back REQUEST_SENSE detection
Impact: fix an oops which always triggers ide_tape_issue_pc() assumed drive->pc isn't NULL on invocation when checking for back-to-back request sense issues but drive->pc can be NULL and even when it's not NULL, it's not safe to dereference it once the previous command is complete because pc could have been freed or was on stack. Kill back-to-back REQUEST_SENSE detection. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-rw-r--r--drivers/ide/ide-tape.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index cb942a9b580..3a53e0834cf 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -614,12 +614,6 @@ static ide_startstop_t ide_tape_issue_pc(ide_drive_t *drive,
{
idetape_tape_t *tape = drive->driver_data;
- if (drive->pc->c[0] == REQUEST_SENSE &&
- pc->c[0] == REQUEST_SENSE) {
- printk(KERN_ERR "ide-tape: possible ide-tape.c bug - "
- "Two request sense in serial were issued\n");
- }
-
if (drive->failed_pc == NULL && pc->c[0] != REQUEST_SENSE)
drive->failed_pc = pc;