[PATCH] scsi: target: vhost-scsi: remove redundant initialization of variable ret

From: Colin Ian King <redacted>

The variable ret is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <redacted>
---
 drivers/vhost/scsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index d16c04dcc144..9129ab8187fd 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c

@@ -2465,7 +2465,7 @@ static const struct target_core_fabric_ops vhost_scsi_ops = {
 
 static int __init vhost_scsi_init(void)
 {
-	int ret = -ENOMEM;
+	int ret;
 
 	pr_debug("TCM_VHOST fabric module %s on %s/%s"
 		" on "UTS_RELEASE"\n", VHOST_SCSI_VERSION, utsname()->sysname,

-- 
2.30.0

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On Wed, Mar 03, 2021 at 01:43:39PM +0000, Colin King wrote:

From: Colin Ian King <redacted>

The variable ret is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <redacted>
---
 drivers/vhost/scsi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Which kernel version is this patch based on?

If it's a fix for a patch that hasn't landed yet, please indicate this.
A "Fixes: ..." tag should be added to this patch as well.

I looked at linux.git/master commit f69d02e37a85645aa90d18cacfff36dba370f797 and see this:

  static int __init vhost_scsi_init(void)
  {
          int ret = -ENOMEM;

          pr_debug("TCM_VHOST fabric module %s on %s/%s"
                  " on "UTS_RELEASE"\n", VHOST_SCSI_VERSION, utsname()->sysname,
                  utsname()->machine);

          /*
           * Use our own dedicated workqueue for submitting I/O into
           * target core to avoid contention within system_wq.
           */
          vhost_scsi_workqueue = alloc_workqueue("vhost_scsi", 0, 0);
          if (!vhost_scsi_workqueue)
                  goto out;

We need ret's initialization value here ^

          ret = vhost_scsi_register();
          if (ret < 0)
                  goto out_destroy_workqueue;

          ret = target_register_template(&vhost_scsi_ops);
          if (ret < 0)
                  goto out_vhost_scsi_deregister;

          return 0;

  out_vhost_scsi_deregister:
          vhost_scsi_deregister();
  out_destroy_workqueue:
          destroy_workqueue(vhost_scsi_workqueue);
  out:
          return ret;
  };