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Commit d73782fd authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
Browse files

mac80211: clean up ieee80211_hw_config errors 



Warn when ieee80211_hw_config returns an error, it shouldn't
happen; remove a number of printks that would happen in such
a case and one printk that is user-triggerable.

Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 3db59438

net/mac80211/cfg.c

+1 −2
Original line number Diff line number Diff line
@@ -394,8 +394,7 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, 
	 */

	if (params->interval) {

		sdata->local->hw.conf.beacon_int = params->interval;

		if (ieee80211_hw_config(sdata->local))

			return -EINVAL;

		ieee80211_hw_config(sdata->local);

		/*

		 * We updated some parameter so if below bails out

		 * it's not an error.

net/mac80211/main.c

+7 −1
Original line number Diff line number Diff line
@@ -222,8 +222,14 @@ int ieee80211_hw_config(struct ieee80211_local *local) 
	       wiphy_name(local->hw.wiphy), chan->center_freq);

#endif



	if (local->open_count)

	if (local->open_count) {

		ret = local->ops->config(local_to_hw(local), &local->hw.conf);

		/*

		 * HW reconfiguration should never fail, the driver has told

		 * us what it can support so it should live up to that promise.

		 */

		WARN_ON(ret);

	}



	return ret;

}

net/mac80211/scan.c

+3 −13
Original line number Diff line number Diff line
@@ -448,18 +448,12 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw) 


	if (local->hw_scanning) {

		local->hw_scanning = false;

		if (ieee80211_hw_config(local))

			printk(KERN_DEBUG "%s: failed to restore operational "

			       "channel after scan\n", wiphy_name(local->hw.wiphy));



		ieee80211_hw_config(local);

		goto done;

	}



	local->sw_scanning = false;

	if (ieee80211_hw_config(local))

		printk(KERN_DEBUG "%s: failed to restore operational "

		       "channel after scan\n", wiphy_name(local->hw.wiphy));



	ieee80211_hw_config(local);



	netif_tx_lock_bh(local->mdev);

	netif_addr_lock(local->mdev);
@@ -546,13 +540,9 @@ void ieee80211_scan_work(struct work_struct *work) 


		if (!skip) {

			local->scan_channel = chan;

			if (ieee80211_hw_config(local)) {

				printk(KERN_DEBUG "%s: failed to set freq to "

				       "%d MHz for scan\n", wiphy_name(local->hw.wiphy),

				       chan->center_freq);

			if (ieee80211_hw_config(local))

				skip = 1;

		}

		}



		/* advance state machine to next channel/band */

		local->scan_channel_idx++;

net/mac80211/util.c

+1 −4
Original line number Diff line number Diff line
@@ -638,11 +638,8 @@ int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freqMHz) 


	if (chan && !(chan->flags & IEEE80211_CHAN_DISABLED)) {

		if (sdata->vif.type == NL80211_IFTYPE_ADHOC &&

		    chan->flags & IEEE80211_CHAN_NO_IBSS) {

			printk(KERN_DEBUG "%s: IBSS not allowed on frequency "

				"%d MHz\n", sdata->dev->name, chan->center_freq);

		    chan->flags & IEEE80211_CHAN_NO_IBSS)

			return ret;

		}

		local->oper_channel = chan;



		if (local->sw_scanning || local->hw_scanning)

net/mac80211/wext.c

+1 −5
Original line number Diff line number Diff line
@@ -689,12 +689,8 @@ static int ieee80211_ioctl_siwtxpower(struct net_device *dev, 
		ieee80211_led_radio(local, local->hw.conf.radio_enabled);

	}



	if (need_reconfig) {

	if (need_reconfig)

		ieee80211_hw_config(local);

		/* The return value of hw_config is not of big interest here,

		 * as it doesn't say that it failed because of _this_ config

		 * change or something else. Ignore it. */

	}



	return 0;

}