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wcn36xx: cancel pending scan request when interface goes down

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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>
This commit is contained in:
Daniel Mack 2018-04-17 15:23:34 +02:00 • committed by Kalle Valo
parent 14ca3c98aa
commit 80c764d321
1 changed files with 13 additions and 0 deletions
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13
drivers/net/wireless/ath/wcn36xx/main.c
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@ -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);