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rt2800: do not crash if spec->channels is NULL

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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>
This commit is contained in:
Stanislaw Gruszka 2013-03-16 19:19:29 +01:00 committed by John W. Linville
parent 8857d6dc77
commit 53216d6a9a
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/rt2x00/rt2800lib.c
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@ -5213,6 +5213,9 @@ static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
spec->channels = rf_vals_3x;
}
if (WARN_ON_ONCE(!spec->channels))
return -ENODEV;
/*
* Initialize HT information.
*/