wifi: mac80211: remove DISALLOW_PUNCTURING_5GHZ code

Since iwlwifi was the only driver using this and no
longer does, we can remove all this code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250609213231.4dff5fb8890f.Ie531f912b252a0042c18c0734db50c3afe1adfb5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

Author: jmberg-intel

include/net/mac80211.h

@@ -2852,8 +2852,6 @@ struct ieee80211_txq {
  *
  * @IEEE80211_HW_DISALLOW_PUNCTURING: HW requires disabling puncturing in EHT
  *	and connecting with a lower bandwidth instead
- * @IEEE80211_HW_DISALLOW_PUNCTURING_5GHZ: HW requires disabling puncturing in
- *	EHT in 5 GHz and connecting with a lower bandwidth instead
  *
  * @IEEE80211_HW_HANDLES_QUIET_CSA: HW/driver handles quieting for CSA, so
  *	no need to stop queues. This really should be set by a driver that
@@ -2923,7 +2921,6 @@ enum ieee80211_hw_flags {
 	IEEE80211_HW_DETECTS_COLOR_COLLISION,
 	IEEE80211_HW_MLO_MCAST_MULTI_LINK_TX,
 	IEEE80211_HW_DISALLOW_PUNCTURING,
-	IEEE80211_HW_DISALLOW_PUNCTURING_5GHZ,
 	IEEE80211_HW_HANDLES_QUIET_CSA,
 	IEEE80211_HW_STRICT,
 

net/mac80211/debugfs.c

@@ -4,7 +4,7 @@
  *
  * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
  * Copyright 2013-2014  Intel Mobile Communications GmbH
- * Copyright (C) 2018 - 2019, 2021-2024 Intel Corporation
+ * Copyright (C) 2018 - 2019, 2021-2025 Intel Corporation
  */
 
 #include <linux/debugfs.h>
@@ -490,7 +490,6 @@ static const char *hw_flag_names[] = {
 	FLAG(DETECTS_COLOR_COLLISION),
 	FLAG(MLO_MCAST_MULTI_LINK_TX),
 	FLAG(DISALLOW_PUNCTURING),
-	FLAG(DISALLOW_PUNCTURING_5GHZ),
 	FLAG(HANDLES_QUIET_CSA),
 	FLAG(STRICT),
 #undef FLAG

net/mac80211/mlme.c

@@ -776,10 +776,6 @@ static bool ieee80211_chandef_usable(struct ieee80211_sub_if_data *sdata,
 	    ieee80211_hw_check(&sdata->local->hw, DISALLOW_PUNCTURING))
 		return false;
 
-	if (chandef->punctured && chandef->chan->band == NL80211_BAND_5GHZ &&
-	    ieee80211_hw_check(&sdata->local->hw, DISALLOW_PUNCTURING_5GHZ))
-		return false;
-
 	return true;
 }