[PATCH v2] Fix debugfs_create_file's error checking method for usb/gadget/

[Zhaolei]

debugfs_create_file() returns NULL if an error occurs, returns -ENODEV
when debugfs is not enabled in the kernel.

Signed-off-by: Zhao Lei <zhaolei@xxxxxxxxxxxxxx>
---
 drivers/usb/gadget/s3c2410_udc.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index 48f51b1..00ba06b 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -1894,11 +1894,8 @@ static int s3c2410_udc_probe(struct platform_device *pdev)
 		udc->regs_info = debugfs_create_file("registers", S_IRUGO,
 				s3c2410_udc_debugfs_root,
 				udc, &s3c2410_udc_debugfs_fops);
-		if (IS_ERR(udc->regs_info)) {
-			dev_warn(dev, "debugfs file creation failed %ld\n",
-				 PTR_ERR(udc->regs_info));
-			udc->regs_info = NULL;
-		}
+		if (!udc->regs_info)
+			dev_warn(dev, "debugfs file creation failed\n");
 	}
 
 	dev_dbg(dev, "probe ok\n");
-- 
1.5.5.3


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