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Commit 25b20dbd authored by Johannes Berg's avatar Johannes Berg
Browse files

cfg80211: reg: fix reg_call_crda() return value bug 



The function reg_call_crda() can't actually validly return
REG_REQ_IGNORE as it does now when calling CRDA fails since
that return value isn't handled properly. Fix that.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 7cf37418

net/wireless/reg.c

+30 −31
Original line number Diff line number Diff line
@@ -554,15 +554,14 @@ static int call_crda(const char *alpha2) 
	return kobject_uevent_env(&reg_pdev->dev.kobj, KOBJ_CHANGE, env);

}



static enum reg_request_treatment

reg_call_crda(struct regulatory_request *request)

static bool reg_call_crda(struct regulatory_request *request)

{

	if (call_crda(request->alpha2))

		return REG_REQ_IGNORE;

		return false;



	queue_delayed_work(system_power_efficient_wq,

			   &reg_timeout, msecs_to_jiffies(3142));

	return REG_REQ_OK;

	return true;

}



bool reg_is_valid_request(const char *alpha2)
@@ -1855,19 +1854,14 @@ static void reg_set_request_processed(void) 
 *

 * The wireless subsystem can use this function to process

 * a regulatory request issued by the regulatory core.

 *

 * Returns one of the different reg request treatment values.

 */

static enum reg_request_treatment

reg_process_hint_core(struct regulatory_request *core_request)

static void reg_process_hint_core(struct regulatory_request *core_request)

{



	if (reg_call_crda(core_request)) {

		core_request->intersect = false;

		core_request->processed = false;



		reg_update_last_request(core_request);



	return reg_call_crda(core_request);

	}

}



static enum reg_request_treatment
@@ -1912,11 +1906,8 @@ __reg_process_hint_user(struct regulatory_request *user_request) 
 *

 * The wireless subsystem can use this function to process

 * a regulatory request initiated by userspace.

 *

 * Returns one of the different reg request treatment values.

 */

static enum reg_request_treatment

reg_process_hint_user(struct regulatory_request *user_request)

static void reg_process_hint_user(struct regulatory_request *user_request)

{

	enum reg_request_treatment treatment;
@@ -1924,18 +1915,19 @@ reg_process_hint_user(struct regulatory_request *user_request) 
	if (treatment == REG_REQ_IGNORE ||

	    treatment == REG_REQ_ALREADY_SET) {

		reg_free_request(user_request);

		return treatment;

		return;

	}



	user_request->intersect = treatment == REG_REQ_INTERSECT;

	user_request->processed = false;



	if (reg_call_crda(user_request)) {

		reg_update_last_request(user_request);



		user_alpha2[0] = user_request->alpha2[0];

		user_alpha2[1] = user_request->alpha2[1];



	return reg_call_crda(user_request);

	} else {

		reg_free_request(user_request);

	}

}



static enum reg_request_treatment
@@ -2003,8 +1995,6 @@ reg_process_hint_driver(struct wiphy *wiphy, 
	driver_request->intersect = treatment == REG_REQ_INTERSECT;

	driver_request->processed = false;



	reg_update_last_request(driver_request);



	/*

	 * Since CRDA will not be called in this case as we already

	 * have applied the requested regulatory domain before we just
@@ -2012,11 +2002,17 @@ reg_process_hint_driver(struct wiphy *wiphy, 
	 */

	if (treatment == REG_REQ_ALREADY_SET) {

		nl80211_send_reg_change_event(driver_request);

		reg_update_last_request(driver_request);

		reg_set_request_processed();

		return treatment;

	}



	return reg_call_crda(driver_request);

	if (reg_call_crda(driver_request))

		reg_update_last_request(driver_request);

	else

		reg_free_request(driver_request);



	return REG_REQ_OK;

}



static enum reg_request_treatment
@@ -2099,9 +2095,12 @@ reg_process_hint_country_ie(struct wiphy *wiphy, 
	country_ie_request->intersect = false;

	country_ie_request->processed = false;



	if (reg_call_crda(country_ie_request))

		reg_update_last_request(country_ie_request);

	else

		reg_free_request(country_ie_request);



	return reg_call_crda(country_ie_request);

	return REG_REQ_OK;

}



/* This processes *all* regulatory hints */