linux-kernel - [PATCH v1] drivers: scsi : fix parameter check in two func

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Date:   Wed, 12 Jul 2023 20:07:02 +0800
From:   Minjie Du <duminjie@...o.com>
To:     Kashyap Desai <kashyap.desai@...adcom.com>,
        Sumit Saxena <sumit.saxena@...adcom.com>,
        Shivasharan S <shivasharan.srikanteshwara@...adcom.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        megaraidlinux.pdl@...adcom.com (open list:MEGARAID SCSI/SAS DRIVERS),
        linux-scsi@...r.kernel.org (open list:MEGARAID SCSI/SAS DRIVERS),
        linux-kernel@...r.kernel.org (open list)
Cc:     opensource.kernel@...o.com, Minjie Du <duminjie@...o.com>
Subject: [PATCH v1] drivers: scsi : fix parameter check in two func

Make IS_ERR() judge the debugfs_create_dir() function return
in megasas_init_debugfs() and megasas_setup_debugfs.

Signed-off-by: Minjie Du <duminjie@...o.com>
---
 drivers/scsi/megaraid/megaraid_sas_debugfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_debugfs.c b/drivers/scsi/megaraid/megaraid_sas_debugfs.c
index c69760775..b8b66d590 100644
--- a/drivers/scsi/megaraid/megaraid_sas_debugfs.c
+++ b/drivers/scsi/megaraid/megaraid_sas_debugfs.c
@@ -102,7 +102,7 @@ static const struct file_operations megasas_debugfs_raidmap_fops = {
 void megasas_init_debugfs(void)
 {
 	megasas_debugfs_root = debugfs_create_dir("megaraid_sas", NULL);
-	if (!megasas_debugfs_root)
+	if (IS_ERR(megasas_debugfs_root))
 		pr_info("Cannot create debugfs root\n");
 }
 
@@ -132,7 +132,7 @@ megasas_setup_debugfs(struct megasas_instance *instance)
 		if (!instance->debugfs_root) {
 			instance->debugfs_root =
 				debugfs_create_dir(name, megasas_debugfs_root);
-			if (!instance->debugfs_root) {
+			if (IS_ERR(instance->debugfs_root)) {
 				dev_err(&instance->pdev->dev,
 					"Cannot create per adapter debugfs directory\n");
 				return;
-- 
2.39.0