| From | Greg Kroah-Hartman <> | Subject | [ 07/77] IB/srp: Avoid sending a task management function needlessly | Date | Fri, 1 Mar 2013 11:43:52 -0800 |
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3.8-stable review patch. If anyone has any objections, please let me know.
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From: Bart Van Assche <bvanassche@acm.org>
commit 3780d1f08856f692116bcf026e4acf1c521df1c7 upstream.
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> Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/infiniband/ulp/srp/ib_srp.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -1695,6 +1695,9 @@ static int srp_send_tsk_mgmt(struct srp_ 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_ 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;
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