wl12xx: add stop_scan command

define wl1271_scan_stop() to cancel an ongoing hw scan.

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

diff --git a/drivers/net/wireless/wl12xx/scan.c b/drivers/net/wireless/wl12xx/scan.c
index 5e5c66d..edfe01c 100644 (file)
--- a/drivers/net/wireless/wl12xx/scan.c
+++ b/drivers/net/wireless/wl12xx/scan.c
@@ -321,6 +321,33 @@ int wl1271_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len,
        return 0;
 }
 
+int wl1271_scan_stop(struct wl1271 *wl)
+{
+       struct wl1271_cmd_header *cmd = NULL;
+       int ret = 0;
+
+       if (WARN_ON(wl->scan.state == WL1271_SCAN_STATE_IDLE))
+               return -EINVAL;
+
+       wl1271_debug(DEBUG_CMD, "cmd scan stop");
+
+       cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+       if (!cmd) {
+               ret = -ENOMEM;
+               goto out;
+       }
+
+       ret = wl1271_cmd_send(wl, CMD_STOP_SCAN, cmd,
+                             sizeof(*cmd), 0);
+       if (ret < 0) {
+               wl1271_error("cmd stop_scan failed");
+               goto out;
+       }
+out:
+       kfree(cmd);
+       return ret;
+}
+
 static int
 wl1271_scan_get_sched_scan_channels(struct wl1271 *wl,
                                    struct cfg80211_sched_scan_request *req,

diff --git a/drivers/net/wireless/wl12xx/scan.h b/drivers/net/wireless/wl12xx/scan.h
index ca81de2..d882e4d 100644 (file)
--- a/drivers/net/wireless/wl12xx/scan.h
+++ b/drivers/net/wireless/wl12xx/scan.h
@@ -28,6 +28,7 @@
 
 int wl1271_scan(struct wl1271 *wl, const u8 *ssid, size_t ssid_len,
                struct cfg80211_scan_request *req);
+int wl1271_scan_stop(struct wl1271 *wl);
 int wl1271_scan_build_probe_req(struct wl1271 *wl,
                                const u8 *ssid, size_t ssid_len,
                                const u8 *ie, size_t ie_len, u8 band);