Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "Small set of three regression fixing patches, things are looking
  pretty good here.

   - Fix cxgb4 to work again with non-4k page sizes

   - NULL pointer oops in SRP during sg_reset"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  iw_cxgb4: cq/qp mask depends on bar2 pages in a host page
  cxgb4: Export sge_host_page_size to ulds
  RDMA/srp: Rework SCSI device reset handling

4 files changed, 15 insertions, 12 deletions

diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index c13c0ba30f63..d499cd61c0e8 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -783,6 +783,7 @@ void c4iw_init_dev_ucontext(struct c4iw_rdev *rdev,
 static int c4iw_rdev_open(struct c4iw_rdev *rdev)
 {
 	int err;
+	unsigned int factor;
 
 	c4iw_init_dev_ucontext(rdev, &rdev->uctx);
 
@@ -806,8 +807,18 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev)
 		return -EINVAL;
 	}
 
-	rdev->qpmask = rdev->lldi.udb_density - 1;
-	rdev->cqmask = rdev->lldi.ucq_density - 1;
+	/* This implementation requires a sge_host_page_size <= PAGE_SIZE. */
+	if (rdev->lldi.sge_host_page_size > PAGE_SIZE) {
+		pr_err("%s: unsupported sge host page size %u\n",
+		       pci_name(rdev->lldi.pdev),
+		       rdev->lldi.sge_host_page_size);
+		return -EINVAL;
+	}
+
+	factor = PAGE_SIZE / rdev->lldi.sge_host_page_size;
+	rdev->qpmask = (rdev->lldi.udb_density * factor) - 1;
+	rdev->cqmask = (rdev->lldi.ucq_density * factor) - 1;
+
 	pr_debug("dev %s stag start 0x%0x size 0x%0x num stags %d pbl start 0x%0x size 0x%0x rq start 0x%0x size 0x%0x qp qid start %u size %u cq qid start %u size %u srq size %u\n",
 		 pci_name(rdev->lldi.pdev), rdev->lldi.vr->stag.start,
 		 rdev->lldi.vr->stag.size, c4iw_num_stags(rdev),
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 31d91538bbf4..694324b37480 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -3032,7 +3032,6 @@ static int srp_reset_device(struct scsi_cmnd *scmnd)
 {
 	struct srp_target_port *target = host_to_target(scmnd->device->host);
 	struct srp_rdma_ch *ch;
-	int i, j;
 	u8 status;
 
 	shost_printk(KERN_ERR, target->scsi_host, "SRP reset_device called\n");
@@ -3044,15 +3043,6 @@ static int srp_reset_device(struct scsi_cmnd *scmnd)
 	if (status)
 		return FAILED;
 
-	for (i = 0; i < target->ch_count; i++) {
-		ch = &target->ch[i];
-		for (j = 0; j < target->req_ring_size; ++j) {
-			struct srp_request *req = &ch->req_ring[j];
-
-			srp_finish_req(ch, req, scmnd->device, DID_RESET << 16);
-		}
-	}
-
 	return SUCCESS;
 }
 
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
index c041f44324db..b3654598a2d5 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c
@@ -660,6 +660,7 @@ static void uld_init(struct adapter *adap, struct cxgb4_lld_info *lld)
 	lld->cclk_ps = 1000000000 / adap->params.vpd.cclk;
 	lld->udb_density = 1 << adap->params.sge.eq_qpp;
 	lld->ucq_density = 1 << adap->params.sge.iq_qpp;
+	lld->sge_host_page_size = 1 << (adap->params.sge.hps + 10);
 	lld->filt_mode = adap->params.tp.vlan_pri_map;
 	/* MODQ_REQ_MAP sets queues 0-3 to chan 0-3 */
 	for (i = 0; i < NCHAN; i++)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
index 5fa9a2d5fc4b..21da34a4ca24 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
@@ -336,6 +336,7 @@ struct cxgb4_lld_info {
 	unsigned int cclk_ps;                /* Core clock period in psec */
 	unsigned short udb_density;          /* # of user DB/page */
 	unsigned short ucq_density;          /* # of user CQs/page */
+	unsigned int sge_host_page_size;     /* SGE host page size */
 	unsigned short filt_mode;            /* filter optional components */
 	unsigned short tx_modq[NCHAN];       /* maps each tx channel to a */
 					     /* scheduler queue */