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mac80211: validate user rate mask before configuring driver 

Ben reported that when the user rate mask is rejected for not
matching any basic rate, the driver had already been configured.
This is clearly an oversight in my original change, fix this by
doing the validation before calling the driver.

Reported-by: Ben Greear <greearb@candelatech.com>
Fixes: e8e4f5280d ("mac80211: reject/clear user rate mask if not usable")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2017-10-18 09:36:51 +02:00
parent 51e13359cd
commit e5f5ce37a7
1 changed files with 6 additions and 6 deletions
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12
net/mac80211/cfg.c
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@ -2727,12 +2727,6 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
if (!ieee80211_sdata_running(sdata))
return -ENETDOWN;
if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
ret = drv_set_bitrate_mask(local, sdata, mask);
if (ret)
return ret;
}
/*
* If active validate the setting and reject it if it doesn't leave
* at least one basic rate usable, since we really have to be able
@ -2748,6 +2742,12 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
return -EINVAL;
}
if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
ret = drv_set_bitrate_mask(local, sdata, mask);
if (ret)
return ret;
}
for (i = 0; i < NUM_NL80211_BANDS; i++) {
struct ieee80211_supported_band *sband = wiphy->bands[i];
int j;