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Subject[git pull] Please pull infiniband.git
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Linus, please pull from

master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband.git for-linus

This tree is also available from kernel.org mirrors at:

git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband.git for-linus

The changes and patch are:

Ishai Rabinovitz:
IB/srp: Complete correct SCSI commands on device reset

Michael S. Tsirkin:
IB/mthca: Fix posting lists of 256 receive requests for Tavor

Roland Dreier:
IB/mthca: Make fw_cmd_doorbell default to 0
IB/srp: Don't wait for disconnection if sending DREQ fails
IB/srp: Get rid of extra scsi_host_put()s if reconnection fails
IB/uverbs: Don't leak ref to mm on error path

drivers/infiniband/core/uverbs_mem.c | 4 +++-
drivers/infiniband/hw/mthca/mthca_cmd.c | 2 +-
drivers/infiniband/hw/mthca/mthca_qp.c | 35 ++++++++++++++++---------------
drivers/infiniband/ulp/srp/ib_srp.c | 10 ++++-----
4 files changed, 27 insertions(+), 24 deletions(-)


diff --git a/drivers/infiniband/core/uverbs_mem.c b/drivers/infiniband/core/uverbs_mem.c
index 36a32c3..efe147d 100644
--- a/drivers/infiniband/core/uverbs_mem.c
+++ b/drivers/infiniband/core/uverbs_mem.c
@@ -211,8 +211,10 @@ void ib_umem_release_on_close(struct ib_
*/

work = kmalloc(sizeof *work, GFP_KERNEL);
- if (!work)
+ if (!work) {
+ mmput(mm);
return;
+ }

INIT_WORK(&work->work, ib_umem_account, work);
work->mm = mm;
diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c
index 1985b5d..798e13e 100644
--- a/drivers/infiniband/hw/mthca/mthca_cmd.c
+++ b/drivers/infiniband/hw/mthca/mthca_cmd.c
@@ -182,7 +182,7 @@ struct mthca_cmd_context {
u8 status;
};

-static int fw_cmd_doorbell = 1;
+static int fw_cmd_doorbell = 0;
module_param(fw_cmd_doorbell, int, 0644);
MODULE_PARM_DESC(fw_cmd_doorbell, "post FW commands through doorbell page if nonzero "
"(and supported by FW)");
diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index 19765f6..07c13be 100644
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -1727,23 +1727,7 @@ int mthca_tavor_post_receive(struct ib_q

ind = qp->rq.next_ind;

- for (nreq = 0; wr; ++nreq, wr = wr->next) {
- if (unlikely(nreq == MTHCA_TAVOR_MAX_WQES_PER_RECV_DB)) {
- nreq = 0;
-
- doorbell[0] = cpu_to_be32((qp->rq.next_ind << qp->rq.wqe_shift) | size0);
- doorbell[1] = cpu_to_be32(qp->qpn << 8);
-
- wmb();
-
- mthca_write64(doorbell,
- dev->kar + MTHCA_RECEIVE_DOORBELL,
- MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
-
- qp->rq.head += MTHCA_TAVOR_MAX_WQES_PER_RECV_DB;
- size0 = 0;
- }
-
+ for (nreq = 0; wr; wr = wr->next) {
if (mthca_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
mthca_err(dev, "RQ %06x full (%u head, %u tail,"
" %d max, %d nreq)\n", qp->qpn,
@@ -1797,6 +1781,23 @@ int mthca_tavor_post_receive(struct ib_q
++ind;
if (unlikely(ind >= qp->rq.max))
ind -= qp->rq.max;
+
+ ++nreq;
+ if (unlikely(nreq == MTHCA_TAVOR_MAX_WQES_PER_RECV_DB)) {
+ nreq = 0;
+
+ doorbell[0] = cpu_to_be32((qp->rq.next_ind << qp->rq.wqe_shift) | size0);
+ doorbell[1] = cpu_to_be32(qp->qpn << 8);
+
+ wmb();
+
+ mthca_write64(doorbell,
+ dev->kar + MTHCA_RECEIVE_DOORBELL,
+ MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
+
+ qp->rq.head += MTHCA_TAVOR_MAX_WQES_PER_RECV_DB;
+ size0 = 0;
+ }
}

out:
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index c32ce43..9cbdffa 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -340,7 +340,10 @@ static void srp_disconnect_target(struct
/* XXX should send SRP_I_LOGOUT request */

init_completion(&target->done);
- ib_send_cm_dreq(target->cm_id, NULL, 0);
+ if (ib_send_cm_dreq(target->cm_id, NULL, 0)) {
+ printk(KERN_DEBUG PFX "Sending CM DREQ failed\n");
+ return;
+ }
wait_for_completion(&target->done);
}

@@ -351,7 +354,6 @@ static void srp_remove_work(void *target
spin_lock_irq(target->scsi_host->host_lock);
if (target->state != SRP_TARGET_DEAD) {
spin_unlock_irq(target->scsi_host->host_lock);
- scsi_host_put(target->scsi_host);
return;
}
target->state = SRP_TARGET_REMOVED;
@@ -365,8 +367,6 @@ static void srp_remove_work(void *target
ib_destroy_cm_id(target->cm_id);
srp_free_target_ib(target);
scsi_host_put(target->scsi_host);
- /* And another put to really free the target port... */
- scsi_host_put(target->scsi_host);
}

static int srp_connect_target(struct srp_target_port *target)
@@ -1241,7 +1241,7 @@ static int srp_reset_device(struct scsi_
list_for_each_entry_safe(req, tmp, &target->req_queue, list)
if (req->scmnd->device == scmnd->device) {
req->scmnd->result = DID_RESET << 16;
- scmnd->scsi_done(scmnd);
+ req->scmnd->scsi_done(req->scmnd);
srp_remove_req(target, req);
}

-
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