From: Johannes Berg <johannes@sipsolutions.net>
Date: Mon, 17 Nov 2008 07:20:31 +0000 (-0800)
Subject: rtnetlink: propagate error from dev_change_flags in do_setlink()
X-Git-Tag: v2.6.28-rc6~62^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f9021cfdc3524a4c5e3d7ae2d049eb7adcd6776;p=pandora-kernel.git

rtnetlink: propagate error from dev_change_flags in do_setlink()

Unlike ifconfig, iproute doesn't report an error when setting
an interface up fails:

(example: put wireless network mac80211 interface into repeater mode
with iwconfig but do not set a peer MAC address, it should fail with
-ENOLINK)

without patch:
# ip link set wlan0 up ; echo $?
0
#

with patch:
# ip link set wlan0 up ; echo $?
RTNETLINK answers: Link has been severed
2
#

Propagate the return value from dev_change_flags() to fix this.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Tested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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