4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
[ Upstream commit 55d694275f41a1c0eef4ef49044ff29bc3999490 ]
Let the target core check the CMD_T_ABORTED flag instead of the SRP
target driver. Hence remove the transport_check_aborted_status()
call. Since state == SRPT_STATE_CMD_RSP_SENT is something that really
should not happen, do not try to recover if srpt_queue_response() is
called for an I/O context that is in that state. This patch is a bug
fix because the srpt_abort_cmd() call is misplaced - if that function
is called from srpt_queue_response() it should either be called
before the command state is changed or after the response has been
sent.
Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
Cc: Doug Ledford <dledford@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Andy Grover <agrover@xxxxxxxxxx>
Cc: David Disseldorp <ddiss@xxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/ulp/srpt/ib_srpt.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -2292,12 +2292,8 @@ static void srpt_queue_response(struct s
}
spin_unlock_irqrestore(&ioctx->spinlock, flags);
- if (unlikely(transport_check_aborted_status(&ioctx->cmd, false)
- || WARN_ON_ONCE(state == SRPT_STATE_CMD_RSP_SENT))) {
- atomic_inc(&ch->req_lim_delta);
- srpt_abort_cmd(ioctx);
+ if (unlikely(WARN_ON_ONCE(state == SRPT_STATE_CMD_RSP_SENT)))
return;
- }
/* For read commands, transfer the data to the initiator. */
if (ioctx->cmd.data_direction == DMA_FROM_DEVICE &&