diff options
| author | Stanislaw Gruszka <stf_xl@wp.pl> | 2013-03-16 19:19:29 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-03-18 16:38:29 -0400 |
| commit | 53216d6a9a2dd3b0a65203e540b7739c36351d55 (patch) | |
| tree | dace15ef1d32fe7ec6c735f15106692838f3e9c5 | |
| parent | 8857d6dc77e4e3afeee2f33c49597010130ed858 (diff) | |
| download | linux-53216d6a9a2dd3b0a65203e540b7739c36351d55.tar.gz linux-53216d6a9a2dd3b0a65203e540b7739c36351d55.tar.bz2 linux-53216d6a9a2dd3b0a65203e540b7739c36351d55.zip | |
rt2800: do not crash if spec->channels is NULL
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>
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800lib.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index a658b4bc7da2..182e598017ec 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -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. */ |