[PATCH 7/9] block: check for timeout function in blk_rq_timed_out()

From: Martin Schwidefsky
Date: Mon Jun 03 2013 - 11:05:54 EST

From: Hannes Reinecke <hare@xxxxxxx>

rq_timed_out_fn might have been unset while the request
was in flight, so we need to check for it in blk_rq_timed_out().

Cc: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
Signed-off-by: Stefan Weinhuber <wein@xxxxxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
block/blk-timeout.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index 6e4744c..65f1035 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -82,9 +82,10 @@ void blk_delete_timer(struct request *req)
static void blk_rq_timed_out(struct request *req)
struct request_queue *q = req->q;
- enum blk_eh_timer_return ret;
+ enum blk_eh_timer_return ret = BLK_EH_RESET_TIMER;

- ret = q->rq_timed_out_fn(req);
+ if (q->rq_timed_out_fn)
+ ret = q->rq_timed_out_fn(req);
switch (ret) {

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