linux-kernel - [PATCH] block: aoe: no need to check return value of debugfs

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Message-Id: <20190122152151.16139-5-gregkh@linuxfoundation.org>
Date:   Tue, 22 Jan 2019 16:21:04 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Ed L. Cashin" <ed.cashin@....org>, Jens Axboe <axboe@...nel.dk>,
        linux-block@...r.kernel.org
Subject: [PATCH] block: aoe: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: "Ed L. Cashin" <ed.cashin@....org>
Cc: Jens Axboe <axboe@...nel.dk>
Cc: linux-block@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/block/aoe/aoeblk.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index e2c6aae2d636..b602646bfa04 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -207,14 +207,7 @@ aoedisk_add_debugfs(struct aoedev *d)
 	else
 		p++;
 	BUG_ON(*p == '\0');
-	entry = debugfs_create_file(p, 0444, aoe_debugfs_dir, d,
-				    &aoe_debugfs_fops);
-	if (IS_ERR_OR_NULL(entry)) {
-		pr_info("aoe: cannot create debugfs file for %s\n",
-			d->gd->disk_name);
-		return;
-	}
-	BUG_ON(d->debugfs);
+	debugfs_create_file(p, 0444, aoe_debugfs_dir, d, &aoe_debugfs_fops);
 	d->debugfs = entry;
 }
 void
@@ -472,10 +465,6 @@ aoeblk_init(void)
 	if (buf_pool_cache == NULL)
 		return -ENOMEM;
 	aoe_debugfs_dir = debugfs_create_dir("aoe", NULL);
-	if (IS_ERR_OR_NULL(aoe_debugfs_dir)) {
-		pr_info("aoe: cannot create debugfs directory\n");
-		aoe_debugfs_dir = NULL;
-	}
 	return 0;
 }
 
-- 
2.20.1