Commit 80c764d3 authored Apr 17, 2018 by Daniel Mack Committed by Kalle Valo Apr 24, 2018

wcn36xx: cancel pending scan request when interface goes down



When the network interface goes down while a scan request is still
pending that can't be stopped due to firmware hickups, wcn->scan_req
remains set, even though the hardware is deinitialized. This results
in -EBUSY for all scan requests after the interface was brought up
again.

Fix this by explicitly completing pending scan requests in
wcn36xx_stop().

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

parent 14ca3c98

drivers/net/wireless/ath/wcn36xx/main.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -353,6 +353,19 @@ static void wcn36xx_stop(struct ieee80211_hw *hw)

		wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");

		cancel_work_sync(&wcn->scan_work);

		mutex_lock(&wcn->scan_lock);
		if (wcn->scan_req) {
		struct cfg80211_scan_info scan_info = {
		.aborted = true,
		};

		ieee80211_scan_completed(wcn->hw, &scan_info);
		}
		wcn->scan_req = NULL;
		mutex_unlock(&wcn->scan_lock);

		wcn36xx_debugfs_exit(wcn);
		wcn36xx_smd_stop(wcn);
		wcn36xx_dxe_deinit(wcn);