[PATCH] mac80211: improve __rate_control_send_low warning
From: Johannes Berg <johannes@sipsolutions.net>
Date: 2015-09-23 12:26:06
Subsystem:
mac80211, the rest · Maintainers:
Johannes Berg, Linus Torvalds
From: Johannes Berg <redacted> If there are no supported rates in the rate mask with the required flags, we warn, but it's not clear which part causes the warning. Add the relevant data to the warning to understand why it happens. Signed-off-by: Johannes Berg <redacted> --- net/mac80211/rate.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 9857693b91ec..48d053b00858 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c@@ -305,7 +305,10 @@ static void __rate_control_send_low(struct ieee80211_hw *hw, info->control.rates[0].idx = i; break; } - WARN_ON_ONCE(i == sband->n_bitrates); + WARN_ONCE(i == sband->n_bitrates, + "no supported rates (0x%x) in rate_mask 0x%x with flags 0x%x\n", + sta ? sta->supp_rates[sband->band] : 0, + rate_mask, rate_flags); info->control.rates[0].count = (info->flags & IEEE80211_TX_CTL_NO_ACK) ?
--
2.5.1