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cfg80211: add warning when calculating MCS rates >= 32

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cfg80211_calculate_bitrate() doesn't work for MCS
rates 32 or higher, and it has always returned 0
in that case. Warn if it ever really happens.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2012-05-08 21:36:20 +02:00 committed by John W. Linville
parent 4472037be8
commit 2615f3759b
1 changed files with 1 additions and 1 deletions
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2
net/wireless/util.c
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@ -880,7 +880,7 @@ u16 cfg80211_calculate_bitrate(struct rate_info *rate)
return rate->legacy;
/* the formula below does only work for MCS values smaller than 32 */
if (rate->mcs >= 32)
if (WARN_ON_ONCE(rate->mcs >= 32))
return 0;
modulation = rate->mcs & 7;