linux-kernel - [PATCH] HSI: omap_ssi_port: Fix return value check in ssi_debug_add

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Message-Id: <1406681600-19741-1-git-send-email-weiyj_lk@163.com>
Date:	Wed, 30 Jul 2014 08:53:20 +0800
From:	weiyj_lk@....com
To:	Sebastian Reichel <sre@...nel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Carlos Chinea <carlos.chinea@...ia.com>
Cc:	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] HSI: omap_ssi_port: Fix return value check in ssi_debug_add_port()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

In case of error, the function debugfs_create_*() returns NULL
pointer not ERR_PTR() if debugfs is enabled. The IS_ERR() test
in the return value check should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 drivers/hsi/controllers/omap_ssi_port.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/hsi/controllers/omap_ssi_port.c b/drivers/hsi/controllers/omap_ssi_port.c
index 29aea0b..eefbb50 100644
--- a/drivers/hsi/controllers/omap_ssi_port.c
+++ b/drivers/hsi/controllers/omap_ssi_port.c
@@ -177,13 +177,13 @@ static int __init ssi_debug_add_port(struct omap_ssi_port *omap_port,
 	struct hsi_port *port = to_hsi_port(omap_port->dev);
 
 	dir = debugfs_create_dir(dev_name(omap_port->dev), dir);
-	if (IS_ERR(dir))
-		return PTR_ERR(dir);
+	if (!dir)
+		return -ENOMEM;
 	omap_port->dir = dir;
 	debugfs_create_file("regs", S_IRUGO, dir, port, &ssi_port_regs_fops);
 	dir = debugfs_create_dir("sst", dir);
-	if (IS_ERR(dir))
-		return PTR_ERR(dir);
+	if (!dir)
+		return -ENOMEM;
 	debugfs_create_file("divisor", S_IRUGO | S_IWUSR, dir, port,
 			    &ssi_sst_div_fops);
 

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