Commit a9cd9c04 authored Jun 29, 2016 by Sinclair Yeh

drm/vmwgfx: Add a check to handle host message failure



Discovered by static code analysis tool.  If for some reason communication
with the host fails more than preset number of retries, return an error
instead of return garbage.

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Charmaine Lee <charmainel@vmware.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

parent 81e257e9

drivers/gpu/drm/vmwgfx/vmwgfx_msg.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -300,6 +300,9 @@ static int vmw_recv_msg(struct rpc_channel channel, void *msg,
		break;
		}

		if (retries == RETRIES)
		return -EINVAL;

		*msg_len = reply_len;
		*msg = reply;