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wifi: mac80211: don't use sband->band early

Message ID 20240207115739.7ce0dfde367b.I4968e12275a3f95926e3f3ccae81e50f23fe4d4d@changeid (mailing list archive)
State Superseded
Delegated to: Johannes Berg
Headers show
Series wifi: mac80211: don't use sband->band early | expand

Commit Message

Johannes Berg Feb. 7, 2024, 10:57 a.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

Some drivers may (notably mt76 does) not set up sband->band
before registering, and cfg80211 will fill it in later. But
since the HT/HE capability check mac80211 required it to be
initialized already, otherwise failing things.  This really
isn't necessary though since the code is iterating the list
of bands, and has the 'band' variable available.  Fix it to
not require the sband->band to be initialized already.

Fixes: f04d2c247e04 ("wifi: mac80211: disallow drivers with HT wider than HE")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index e05bcc35bc1e..6d38b8dce8a2 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -1124,7 +1124,7 @@  int ieee80211_register_hw(struct ieee80211_hw *hw)
 			supp_he = supp_he || iftd->he_cap.has_he;
 			supp_eht = supp_eht || iftd->eht_cap.has_eht;
 
-			if (sband->band == NL80211_BAND_2GHZ)
+			if (band == NL80211_BAND_2GHZ)
 				he_40_mhz_cap =
 					IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G;
 			else