Bluetooth: hidp: replace kzalloc/copy_from_user by memdup_user
authorFabian Frederick <fabf@skynet.be>
Fri, 14 Nov 2014 18:35:05 +0000 (19:35 +0100)
committerMarcel Holtmann <marcel@holtmann.org>
Sat, 15 Nov 2014 00:30:16 +0000 (01:30 +0100)
use memdup_user for rd_data import.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
net/bluetooth/hidp/core.c

index 1b7d605706aa5720b45e056d3a75f235c9c4ab60..cc25d0b74b3609ef800453484eef7e0f55767162 100644 (file)
@@ -736,14 +736,10 @@ static int hidp_setup_hid(struct hidp_session *session,
        struct hid_device *hid;
        int err;
 
-       session->rd_data = kzalloc(req->rd_size, GFP_KERNEL);
-       if (!session->rd_data)
-               return -ENOMEM;
+       session->rd_data = memdup_user(req->rd_data, req->rd_size);
+       if (IS_ERR(session->rd_data))
+               return PTR_ERR(session->rd_data);
 
-       if (copy_from_user(session->rd_data, req->rd_data, req->rd_size)) {
-               err = -EFAULT;
-               goto fault;
-       }
        session->rd_size = req->rd_size;
 
        hid = hid_allocate_device();