scsi: scsi_debug: Delete some bogus error checking

Smatch complains that "dentry" is never initialized.  These days everyone
initializes all their stack variables to zero so this means that it will
trigger a warning every time this function is run.

Really, debugfs functions are not supposed to be checked for errors in
normal code.  For example, if we updated this code to check the correct
variable then it would print a warning if CONFIG_DEBUGFS was disabled.  We
don't want that.  Just delete the check.

Fixes: f084fe52c640 ("scsi: scsi_debug: Add debugfs interface to fail target reset")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/c602c9ad-5e35-4e18-a47f-87ed956a9ec2@moroto.mountain
Reviewed-by: Wenchao Hao <haowenchao2@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 0dd21598f7b6d108f6e19ee1047cd48bd66b867e..6d8218a4412264952226a3a2a628e5a6e7d8d2bc 100644 (file)
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -1132,7 +1132,6 @@ static const struct file_operations sdebug_target_reset_fail_fops = {
 static int sdebug_target_alloc(struct scsi_target *starget)
 {
        struct sdebug_target_info *targetip;
-       struct dentry *dentry;
 
        targetip = kzalloc(sizeof(struct sdebug_target_info), GFP_KERNEL);
        if (!targetip)
@@ -1140,15 +1139,9 @@ static int sdebug_target_alloc(struct scsi_target *starget)
 
        targetip->debugfs_entry = debugfs_create_dir(dev_name(&starget->dev),
                                sdebug_debugfs_root);
-       if (IS_ERR_OR_NULL(targetip->debugfs_entry))
-               pr_info("%s: failed to create debugfs directory for target %s\n",
-                       __func__, dev_name(&starget->dev));
 
        debugfs_create_file("fail_reset", 0600, targetip->debugfs_entry, starget,
                                &sdebug_target_reset_fail_fops);
-       if (IS_ERR_OR_NULL(dentry))
-               pr_info("%s: failed to create fail_reset file for target %s\n",
-                       __func__, dev_name(&starget->dev));
 
        starget->hostdata = targetip;