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Commit 5d885b99 authored by Johannes Berg's avatar Johannes Berg
Browse files

regulatory: simplify freq_reg_info_regd 



The function itself has dual-purpose: it can
retrieve from a given regdomain or from the
globally installed one. Change it to have a
single purpose only: to look up from a given
regdomain. Pass the correct regdomain in the
freq_reg_info() function instead.

This also changes the locking rules for it,
no locking is required any more.

Acked-by: default avatarLuis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 0ba857ad

net/wireless/reg.c

+16 −15
Original line number Diff line number Diff line
@@ -678,28 +678,15 @@ static int freq_reg_info_regd(struct wiphy *wiphy, 
			      u32 center_freq,

			      u32 desired_bw_khz,

			      const struct ieee80211_reg_rule **reg_rule,

			      const struct ieee80211_regdomain *custom_regd)

			      const struct ieee80211_regdomain *regd)

{

	int i;

	bool band_rule_found = false;

	const struct ieee80211_regdomain *regd;

	bool bw_fits = false;



	if (!desired_bw_khz)

		desired_bw_khz = MHZ_TO_KHZ(20);



	regd = custom_regd ? custom_regd : cfg80211_regdomain;



	/*

	 * Follow the driver's regulatory domain, if present, unless a country

	 * IE has been processed or a user wants to help complaince further

	 */

	if (!custom_regd &&

	    last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&

	    last_request->initiator != NL80211_REGDOM_SET_BY_USER &&

	    wiphy->regd)

		regd = wiphy->regd;



	if (!regd)

		return -EINVAL;
@@ -735,10 +722,24 @@ static int freq_reg_info_regd(struct wiphy *wiphy, 
int freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 desired_bw_khz,

		  const struct ieee80211_reg_rule **reg_rule)

{

	const struct ieee80211_regdomain *regd;



	assert_reg_lock();

	assert_cfg80211_lock();



	/*

	 * Follow the driver's regulatory domain, if present, unless a country

	 * IE has been processed or a user wants to help complaince further

	 */

	if (last_request->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&

	    last_request->initiator != NL80211_REGDOM_SET_BY_USER &&

	    wiphy->regd)

		regd = wiphy->regd;

	else

		regd = cfg80211_regdomain;



	return freq_reg_info_regd(wiphy, center_freq, desired_bw_khz,

				  reg_rule, NULL);

				  reg_rule, regd);

}

EXPORT_SYMBOL(freq_reg_info);