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USB: Fix debugfs_create_file's error checking method for usb/gadget/s3c2410_udc 

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Zhaolei 2008-10-20 18:53:04 +08:00 committed by Greg Kroah-Hartman
parent 78c73414f4
commit d66937d71a
1 changed files with 2 additions and 5 deletions
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7
drivers/usb/gadget/s3c2410_udc.c
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@ -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");