From: Shlomo Pongratz <[email protected]> Commit 659743b "[SCSI] libiscsi: Reduce locking contention in fast path" introduced a new smatch warning on libiscsi.c "iscsi_xmit_task() warn: inconsistent returns bottom_half:: locked (1410 [(-61)]) unlocked (1425 [0], 1425 [s32min-(-1),1-s32max])", which we can eliminate by using non bh locking on the nested spin_lock call.
Reported-by: Dan Carpenter <[email protected]> Signed-off-by: Shlomo Pongratz <[email protected]> Signed-off-by: Or Gerlitz <[email protected]> --- drivers/scsi/libiscsi.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index 5b8605c..5087957 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -1411,9 +1411,9 @@ static int iscsi_xmit_task(struct iscsi_conn *conn) conn->task = NULL; } /* regular RX path uses back_lock */ - spin_lock_bh(&conn->session->back_lock); + spin_lock(&conn->session->back_lock); __iscsi_put_task(task); - spin_unlock_bh(&conn->session->back_lock); + spin_unlock(&conn->session->back_lock); return rc; } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
