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IB/srp: Avoid sending a task management function needlessly

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Do not send a task management function if sending will fail anyway
because either there is no RDMA/RC connection or the QP is in the
error state.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: David Dillow <dave@thedillows.org>
Cc: <stable@vger.kernel.org> # 3.8
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Bart Van Assche 2013-02-21 17:18:00 +00:00 committed by Roland Dreier
parent e1b2f13aba
commit 3780d1f088
1 changed files with 3 additions and 2 deletions
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5
drivers/infiniband/ulp/srp/ib_srp.c
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@ -1695,6 +1695,9 @@ static int srp_send_tsk_mgmt(struct srp_target_port *target,
struct srp_iu *iu;
struct srp_tsk_mgmt *tsk_mgmt;
if (!target->connected || target->qp_in_error)
return -1;
init_completion(&target->tsk_mgmt_done);
spin_lock_irq(&target->lock);
@ -1754,8 +1757,6 @@ static int srp_reset_device(struct scsi_cmnd *scmnd)
shost_printk(KERN_ERR, target->scsi_host, "SRP reset_device called\n");
if (target->qp_in_error)
return FAILED;
if (srp_send_tsk_mgmt(target, SRP_TAG_NO_REQ, scmnd->device->lun,
SRP_TSK_LUN_RESET))
return FAILED;