wl12xx: make WL1271_FLAG_IDLE flag per-vif

This flag should be set per-vif, rather than globally.

Rename the flag to indicate IN_USE (rather than IDLE), as
in the default configuration (i.e. flag is clear) the vif
should be idle.

Change all the bit operations (and elp conditions) appropriately.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/wl12xx/main.c

@@ -2384,6 +2384,10 @@ static int wl1271_sta_handle_idle(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 				  bool idle)
 {
 	int ret;
+	bool cur_idle = !test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
+
+	if (idle == cur_idle)
+		return 0;
 
 	if (idle) {
 		/* no need to croc if we weren't busy (e.g. during boot) */
@@ -2402,7 +2406,7 @@ static int wl1271_sta_handle_idle(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 			ACX_KEEP_ALIVE_TPL_INVALID);
 		if (ret < 0)
 			goto out;
-		set_bit(WL1271_FLAG_IDLE, &wl->flags);
+		clear_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
 	} else {
 		/* The current firmware only supports sched_scan in idle */
 		if (wl->sched_scanning) {
@@ -2413,7 +2417,7 @@ static int wl1271_sta_handle_idle(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 		ret = wl12xx_start_dev(wl, wlvif);
 		if (ret < 0)
 			goto out;
-		clear_bit(WL1271_FLAG_IDLE, &wl->flags);
+		set_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
 	}
 
 out:

drivers/net/wireless/wl12xx/ps.c

@@ -53,8 +53,11 @@ void wl1271_elp_work(struct work_struct *work)
 		goto out;
 
 	wl12xx_for_each_wlvif(wl, wlvif) {
+		if (wlvif->bss_type == BSS_TYPE_AP_BSS)
+			goto out;
+
 		if (!test_bit(WLVIF_FLAG_PSM, &wlvif->flags) &&
-		    !test_bit(WL1271_FLAG_IDLE, &wl->flags))
+		    test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags))
 			goto out;
 	}
 
@@ -78,8 +81,11 @@ void wl1271_ps_elp_sleep(struct wl1271 *wl)
 		return;
 
 	wl12xx_for_each_wlvif(wl, wlvif) {
+		if (wlvif->bss_type == BSS_TYPE_AP_BSS)
+			return;
+
 		if (!test_bit(WLVIF_FLAG_PSM, &wlvif->flags) &&
-		    !test_bit(WL1271_FLAG_IDLE, &wl->flags))
+		    test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags))
 			return;
 	}
 

drivers/net/wireless/wl12xx/scan.c

@@ -703,7 +703,7 @@ int wl1271_scan_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 	if (wlvif->bss_type != BSS_TYPE_STA_BSS)
 		return -EOPNOTSUPP;
 
-	if (!test_bit(WL1271_FLAG_IDLE, &wl->flags))
+	if (test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags))
 		return -EBUSY;
 
 	start = kzalloc(sizeof(*start), GFP_KERNEL);

drivers/net/wireless/wl12xx/wl12xx.h

@@ -241,7 +241,6 @@ enum wl12xx_flags {
 	WL1271_FLAG_IN_ELP,
 	WL1271_FLAG_ELP_REQUESTED,
 	WL1271_FLAG_IRQ_RUNNING,
-	WL1271_FLAG_IDLE,
 	WL1271_FLAG_FW_TX_BUSY,
 	WL1271_FLAG_DUMMY_PACKET_PENDING,
 	WL1271_FLAG_SUSPENDED,
@@ -262,6 +261,7 @@ enum wl12xx_vif_flags {
 	WLVIF_FLAG_PSPOLL_FAILURE,
 	WLVIF_FLAG_CS_PROGRESS,
 	WLVIF_FLAG_AP_PROBE_RESP_SET,
+	WLVIF_FLAG_IN_USE,
 };
 
 struct wl1271_link {