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From: Zhaolei <zhaolei@cn.fujitsu.com>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: dbrownell@users.sourceforge.net, linux-usb@vger.kernel.org
Subject: [PATCH] Fix debugfs_create_file's error checking method for usb/gadget/
Date: Fri, 17 Oct 2008 20:54:58 +0800 [thread overview]
Message-ID: <48F88B22.6010102@cn.fujitsu.com> (raw)
Hi,
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@cn.fujitsu.com>
---
drivers/usb/gadget/s3c2410_udc.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index 29d13eb..4ba50ef 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -1894,7 +1894,7 @@ 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)) {
+ if (IS_ERR(udc->regs_info) || !udc->regs_info) {
dev_warn(dev, "debugfs file creation failed %ld\n",
PTR_ERR(udc->regs_info));
udc->regs_info = NULL;
--
1.5.5.3
next reply other threads:[~2008-10-17 12:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-17 12:54 Zhaolei [this message]
2008-10-17 15:18 ` Alan Stern
2008-10-20 1:15 ` Zhaolei
2008-10-20 1:19 ` Zhaolei
2008-10-20 3:46 ` Greg KH
2008-10-20 10:53 ` [PATCH v2] " Zhaolei
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