From: Sjur Brændeland <sjur.brandeland@stericsson.com>
Date: Mon, 15 Oct 2012 07:57:33 +0000 (+0200)
Subject: virtio_console: Free buffer if splice fails
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fe5295374ec9ac56ba3b619c5c1792b3fd66d859;p=linux-beck.git

virtio_console: Free buffer if splice fails

Free the allocated scatter list if send_pages fails in function
port_splice_write.

Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---

diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 6a369942da84..09d193dbb233 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -881,6 +881,8 @@ static ssize_t port_fops_splice_write(struct pipe_inode_info *pipe,
 	if (likely(ret > 0))
 		ret = send_pages(port, sgl.sg, sgl.n, sgl.len, true);
 
+	if (unlikely(ret <= 0))
+		kfree(sgl.sg);
 	return ret;
 }