linux-kernel - [PATCH] drivers: mpt3sas: mpt3sas_debugfs: return value check of `mpt3sas_debugfs

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Message-Id: <20230423122535.31019-1-U202112064@hust.edu.cn>
Date:   Sun, 23 Apr 2023 20:25:35 +0800
From:   Jing Xu <U202112064@...t.edu.cn>
To:     Sathya Prakash <sathya.prakash@...adcom.com>,
        Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
        Suganath Prabu Subramani 
        <suganath-prabu.subramani@...adcom.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     hust-os-kernel-patches@...glegroups.com,
        Jing Xu <U202112064@...t.edu.cn>,
        Dongliang Mu <dzm91@...t.edu.cn>,
        MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drivers: mpt3sas: mpt3sas_debugfs: return value check of `mpt3sas_debugfs_root`

Smatch complains that:
mpt3sas_init_debugfs() warn: 'mpt3sas_debugfs_root' is an error 
pointer or valid

There is no need to check the return value of the debugfs_create_dir() 
function, just delete the dead code.

Fixes: 2b01b293f359 ("scsi: mpt3sas: Capture IOC data for debugging purposes")
Signed-off-by: Jing Xu <U202112064@...t.edu.cn>
Reviewed-by: Dongliang Mu <dzm91@...t.edu.cn>
---
 drivers/scsi/mpt3sas/mpt3sas_debugfs.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_debugfs.c b/drivers/scsi/mpt3sas/mpt3sas_debugfs.c
index a6ab1db81167..c92e08c130b9 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_debugfs.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_debugfs.c
@@ -99,8 +99,6 @@ static const struct file_operations mpt3sas_debugfs_iocdump_fops = {
 void mpt3sas_init_debugfs(void)
 {
 	mpt3sas_debugfs_root = debugfs_create_dir("mpt3sas", NULL);
-	if (!mpt3sas_debugfs_root)
-		pr_info("mpt3sas: Cannot create debugfs root\n");
 }
 
 /*
-- 
2.25.1