From 7042e8f2f6f5c76b6173748570312bbeb044c7dd Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sun, 20 Jul 2014 11:42:07 +0800 Subject: [PATCH] usb: gadget: Fix return value check in ep_write() In case of error, the function memdup_user() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun Signed-off-by: Felipe Balbi --- drivers/usb/gadget/legacy/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index 2e4ce7704908..e96077b8bf79 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -440,7 +440,7 @@ ep_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) value = -ENOMEM; kbuf = memdup_user(buf, len); - if (!kbuf) { + if (IS_ERR(kbuf)) { value = PTR_ERR(kbuf); goto free1; } -- 2.20.1