rt2800: do not crash if spec->channels is NULL
authorStanislaw Gruszka <stf_xl@wp.pl>
Sat, 16 Mar 2013 18:19:29 +0000 (19:19 +0100)
committerJohn W. Linville <linville@tuxdriver.com>
Mon, 18 Mar 2013 20:38:29 +0000 (16:38 -0400)
In case the spec->channels was not specified, print warning instead
of hard crash the kernel.

Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Tested-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
drivers/net/wireless/rt2x00/rt2800lib.c