diff options
| author | Bjorn Andersson <bjorn.andersson@linaro.org> | 2017-02-01 07:27:47 -0800 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2017-02-07 10:59:26 +0200 |
| commit | 03c95dbef64264b6d86d50c0f0d90fdf989e528e (patch) | |
| tree | a9147ea324fb1aa1f552067280c35a52a0fb664d /drivers/net/wireless/ath/wcn36xx/main.c | |
| parent | 7f622593cc5add77a99cd39404e8a851be9de792 (diff) | |
wcn36xx: Implement cancel_hw_scan
In the even that the wcn36xx interface is brought down while a hw_scan
is active we must abort and wait for the ongoing scan to signal
completion to mac80211.
Reported-by: Mart Raudsepp <leio@gentoo.org>
Fixes: 886039036c20 ("wcn36xx: Implement firmware assisted scan")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/wcn36xx/main.c')
| -rw-r--r-- | drivers/net/wireless/ath/wcn36xx/main.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c index 0002190c9041..7a0c2e7da7f6 100644 --- a/drivers/net/wireless/ath/wcn36xx/main.c +++ b/drivers/net/wireless/ath/wcn36xx/main.c @@ -574,6 +574,7 @@ static void wcn36xx_hw_scan_worker(struct work_struct *work) struct cfg80211_scan_request *req = wcn->scan_req; u8 channels[WCN36XX_HAL_PNO_MAX_NETW_CHANNELS_EX]; struct cfg80211_scan_info scan_info = {}; + bool aborted = false; int i; wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 scan %d channels worker\n", req->n_channels); @@ -585,6 +586,13 @@ static void wcn36xx_hw_scan_worker(struct work_struct *work) wcn36xx_smd_init_scan(wcn, HAL_SYS_MODE_SCAN); for (i = 0; i < req->n_channels; i++) { + mutex_lock(&wcn->scan_lock); + aborted = wcn->scan_aborted; + mutex_unlock(&wcn->scan_lock); + + if (aborted) + break; + wcn->scan_freq = req->channels[i]->center_freq; wcn->scan_band = req->channels[i]->band; @@ -596,7 +604,7 @@ static void wcn36xx_hw_scan_worker(struct work_struct *work) } wcn36xx_smd_finish_scan(wcn, HAL_SYS_MODE_SCAN); - scan_info.aborted = false; + scan_info.aborted = aborted; ieee80211_scan_completed(wcn->hw, &scan_info); mutex_lock(&wcn->scan_lock); @@ -615,6 +623,8 @@ static int wcn36xx_hw_scan(struct ieee80211_hw *hw, mutex_unlock(&wcn->scan_lock); return -EBUSY; } + + wcn->scan_aborted = false; wcn->scan_req = &hw_req->req; mutex_unlock(&wcn->scan_lock); @@ -623,6 +633,18 @@ static int wcn36xx_hw_scan(struct ieee80211_hw *hw, return 0; } +static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct wcn36xx *wcn = hw->priv; + + mutex_lock(&wcn->scan_lock); + wcn->scan_aborted = true; + mutex_unlock(&wcn->scan_lock); + + cancel_work_sync(&wcn->scan_work); +} + static void wcn36xx_update_allowed_rates(struct ieee80211_sta *sta, enum nl80211_band band) { @@ -1034,6 +1056,7 @@ static const struct ieee80211_ops wcn36xx_ops = { .tx = wcn36xx_tx, .set_key = wcn36xx_set_key, .hw_scan = wcn36xx_hw_scan, + .cancel_hw_scan = wcn36xx_cancel_hw_scan, .bss_info_changed = wcn36xx_bss_info_changed, .set_rts_threshold = wcn36xx_set_rts_threshold, .sta_add = wcn36xx_sta_add, |