From: Pavel Shilovsky <pshilov@microsoft.com>
Date: Thu, 10 Jan 2019 19:27:28 +0000 (-0800)
Subject: CIFS: Do not hide EINTR after sending network packets
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=ee13919c2e8d1f904e035ad4b4239029a8994131;p=openwrt%2Fstaging%2Fblogic.git

CIFS: Do not hide EINTR after sending network packets

Currently we hide EINTR code returned from sock_sendmsg()
and return 0 instead. This makes a caller think that we
successfully completed the network operation which is not
true. Fix this by properly returning EINTR to callers.

Cc: <stable@vger.kernel.org>
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
---

diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index e047f06c9b4f..aaff9c5aab3d 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -387,7 +387,7 @@ smbd_done:
 	if (rc < 0 && rc != -EINTR)
 		cifs_dbg(VFS, "Error %d sending data on socket to server\n",
 			 rc);
-	else
+	else if (rc > 0)
 		rc = 0;
 
 	return rc;