drm: merge in Linus mainline

2 files changed, 12 insertions, 6 deletions

diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 321a3a10e69b..ee9fe226ae99 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -802,13 +802,21 @@ static int srp_post_recv(struct srp_target_port *target)
 
 /*
  * Must be called with target->scsi_host->host_lock held to protect
- * req_lim and tx_head.
+ * req_lim and tx_head.  Lock cannot be dropped between call here and
+ * call to __srp_post_send().
  */
 static struct srp_iu *__srp_get_tx_iu(struct srp_target_port *target)
 {
         if (target->tx_head - target->tx_tail >= SRP_SQ_SIZE)
                 return NULL;
 
+        if (unlikely(target->req_lim < 1)) {
+                if (printk_ratelimit())
+                        printk(KERN_DEBUG PFX "Target has req_lim %d\n",
+                               target->req_lim);
+                return NULL;
+        }
+
         return target->tx_ring[target->tx_head & SRP_SQ_SIZE];
 }
 
@@ -823,11 +831,6 @@ static int __srp_post_send(struct srp_target_port *target,
         struct ib_send_wr wr, *bad_wr;
         int ret = 0;
 
-        if (target->req_lim < 1) {
-                printk(KERN_ERR PFX "Target has req_lim %d\n", target->req_lim);
-                return -EAGAIN;
-        }
-
         list.addr   = iu->dma;
         list.length = len;
         list.lkey   = target->srp_host->mr->lkey;
@@ -1417,6 +1420,8 @@ static ssize_t srp_create_target(struct class_device *class_dev,
         if (!target_host)
                 return -ENOMEM;
 
+        target_host->max_lun = SRP_MAX_LUN;
+
         target = host_to_target(target_host);
         memset(target, 0, sizeof *target);
 
diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h
index 4fec28a71367..b564f18caf78 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.h
+++ b/drivers/infiniband/ulp/srp/ib_srp.h
@@ -54,6 +54,7 @@ enum {
         SRP_PORT_REDIRECT       = 1,
         SRP_DLID_REDIRECT       = 2,
 
+        SRP_MAX_LUN             = 512,
         SRP_MAX_IU_LEN          = 256,
 
         SRP_RQ_SHIFT            = 6,