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

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Message-Id: <1406681621-23265-1-git-send-email-weiyj_lk@163.com>
Date:	Wed, 30 Jul 2014 08:53:41 +0800
From:	weiyj_lk@....com
To:	Sebastian Reichel <sre@...nel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Carlos Chinea <carlos.chinea@...ia.com>
Cc:	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] HSI: omap_ssi: Fix return value check in ssi_debug_add_ctrl()

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.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/hsi/controllers/omap_ssi.c b/drivers/hsi/controllers/omap_ssi.c
index 0fc7a7f..cee6ec2 100644
--- a/drivers/hsi/controllers/omap_ssi.c
+++ b/drivers/hsi/controllers/omap_ssi.c
@@ -148,14 +148,14 @@ static int __init ssi_debug_add_ctrl(struct hsi_controller *ssi)
 
 	/* SSI controller */
 	omap_ssi->dir = debugfs_create_dir(dev_name(&ssi->device), NULL);
-	if (IS_ERR(omap_ssi->dir))
-		return PTR_ERR(omap_ssi->dir);
+	if (!omap_ssi->dir)
+		return -ENOMEM;
 
 	debugfs_create_file("regs", S_IRUGO, omap_ssi->dir, ssi,
 								&ssi_regs_fops);
 	/* SSI GDD (DMA) */
 	dir = debugfs_create_dir("gdd", omap_ssi->dir);
-	if (IS_ERR(dir))
+	if (!dir)
 		goto rback;
 	debugfs_create_file("regs", S_IRUGO, dir, ssi, &ssi_gdd_regs_fops);
 
@@ -163,7 +163,7 @@ static int __init ssi_debug_add_ctrl(struct hsi_controller *ssi)
 rback:
 	debugfs_remove_recursive(omap_ssi->dir);
 
-	return PTR_ERR(dir);
+	return -ENOMEM;
 }
 
 static void ssi_debug_remove_ctrl(struct hsi_controller *ssi)

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