From 3b74c73f8d6f053f422e85fce955b61fb181cfe7 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 10 Mar 2014 13:30:55 -0500 Subject: [PATCH] usb: gadget: inode: switch over to memdup_user() This patch fixes the following Coccinelle warning: drivers/usb/gadget/inode.c:442:8-15: WARNING \ opportunity for memdup_user Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/inode.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c index b94c049ab0d0..b5be6f0308c2 100644 --- a/drivers/usb/gadget/inode.c +++ b/drivers/usb/gadget/inode.c @@ -439,11 +439,9 @@ ep_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) /* FIXME writebehind for O_NONBLOCK and poll(), qlen = 1 */ value = -ENOMEM; - kbuf = kmalloc (len, GFP_KERNEL); - if (!kbuf) - goto free1; - if (copy_from_user (kbuf, buf, len)) { - value = -EFAULT; + kbuf = memdup_user(buf, len); + if (!kbuf) { + value = PTR_ERR(kbuf); goto free1; } @@ -452,7 +450,6 @@ ep_write (struct file *fd, const char __user *buf, size_t len, loff_t *ptr) data->name, len, (int) value); free1: mutex_unlock(&data->lock); - kfree (kbuf); return value; } -- 2.30.2