[3.13.y-ckt stable] Patch "ncpfs: return proper error from NCP_IOC_SETROOT ioctl" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    ncpfs: return proper error from NCP_IOC_SETROOT ioctl

to the linux-3.13.y-queue branch of the 3.13.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11-ckt15.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From eaa8a29d29f046a2ec9212f74e840e0a1188049a Mon Sep 17 00:00:00 2001
From: Jan Kara <jack at suse.cz>
Date: Wed, 10 Dec 2014 15:52:22 -0800
Subject: ncpfs: return proper error from NCP_IOC_SETROOT ioctl

commit a682e9c28cac152e6e54c39efcf046e0c8cfcf63 upstream.

If some error happens in NCP_IOC_SETROOT ioctl, the appropriate error
return value is then (in most cases) just overwritten before we return.
This can result in reporting success to userspace although error happened.

This bug was introduced by commit 2e54eb96e2c8 ("BKL: Remove BKL from
ncpfs").  Propagate the errors correctly.

Coverity id: 1226925.

Fixes: 2e54eb96e2c80 ("BKL: Remove BKL from ncpfs")
Signed-off-by: Jan Kara <jack at suse.cz>
Cc: Petr Vandrovec <petr at vandrovec.name>
Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 fs/ncpfs/ioctl.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c
index 60426cc..2f970de 100644
--- a/fs/ncpfs/ioctl.c
+++ b/fs/ncpfs/ioctl.c
@@ -448,7 +448,6 @@ static long __ncp_ioctl(struct inode *inode, unsigned int cmd, unsigned long arg
 						result = -EIO;
 					}
 				}
-				result = 0;
 			}
 			mutex_unlock(&server->root_setup_lock);

--
1.9.1