Merge tag 'ib-srpt-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Cleanups and error path fixes for the new SRP (SCSI RDMA protocol) target.

* tag 'ib-srpt-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/srpt: Don't return freed pointer from srpt_alloc_ioctx_ring()
  IB/srpt: Fix ERR_PTR() vs. NULL checking confusion
  IB/srpt: Remove unneeded <linux/version.h> include
  IB/srpt: Use ARRAY_SIZE() instead of open-coding
  IB/srpt: Use DEFINE_SPINLOCK()/LIST_HEAD()

2 files changed, 7 insertions, 11 deletions

diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index cd5d05e22a77..2b73d43cd691 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -69,8 +69,8 @@ MODULE_LICENSE("Dual BSD/GPL");
  */
 
 static u64 srpt_service_guid;
-static spinlock_t srpt_dev_lock;       /* Protects srpt_dev_list. */
-static struct list_head srpt_dev_list; /* List of srpt_device structures. */
+static DEFINE_SPINLOCK(srpt_dev_lock);  /* Protects srpt_dev_list. */
+static LIST_HEAD(srpt_dev_list);        /* List of srpt_device structures. */
 
 static unsigned srp_max_req_size = DEFAULT_MAX_REQ_SIZE;
 module_param(srp_max_req_size, int, 0444);
@@ -687,6 +687,7 @@ err:
         while (--i >= 0)
                 srpt_free_ioctx(sdev, ring[i], dma_size, dir);
         kfree(ring);
+        ring = NULL;
 out:
         return ring;
 }
@@ -2595,7 +2596,7 @@ static int srpt_cm_req_recv(struct ib_cm_id *cm_id,
         }
 
         ch->sess = transport_init_session();
-        if (!ch->sess) {
+        if (IS_ERR(ch->sess)) {
                 rej->reason = __constant_cpu_to_be32(
                                 SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES);
                 pr_debug("Failed to create session\n");
@@ -3264,8 +3265,7 @@ static void srpt_add_one(struct ib_device *device)
         for (i = 0; i < sdev->srq_size; ++i)
                 srpt_post_recv(sdev, sdev->ioctx_ring[i]);
 
-        WARN_ON(sdev->device->phys_port_cnt
-                > sizeof(sdev->port)/sizeof(sdev->port[0]));
+        WARN_ON(sdev->device->phys_port_cnt > ARRAY_SIZE(sdev->port));
 
         for (i = 1; i <= sdev->device->phys_port_cnt; i++) {
                 sport = &sdev->port[i - 1];
@@ -4010,13 +4010,10 @@ static int __init srpt_init_module(void)
                 goto out;
         }
 
-        spin_lock_init(&srpt_dev_lock);
-        INIT_LIST_HEAD(&srpt_dev_list);
-
-        ret = -ENODEV;
         srpt_target = target_fabric_configfs_init(THIS_MODULE, "srpt");
-        if (!srpt_target) {
+        if (IS_ERR(srpt_target)) {
                 printk(KERN_ERR "couldn't register\n");
+                ret = PTR_ERR(srpt_target);
                 goto out;
         }
 
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.h b/drivers/infiniband/ulp/srpt/ib_srpt.h
index b4b4bbcd7f16..61e52b830816 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.h
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.h
@@ -35,7 +35,6 @@
 #ifndef IB_SRPT_H
 #define IB_SRPT_H
 
-#include <linux/version.h>
 #include <linux/types.h>
 #include <linux/list.h>
 #include <linux/wait.h>