wl1271: Add handling for failing hardware scan command

Currently, the driver does not handle a failing hardware command to scan in
any way - effectively, the scan machine will jam until the driver is shut down,
and future scan requests will just return -EBUSY to user space, resulting in
a type of busy-loop. The same problem occurs if the firmware fails to deliver
the scan completion event - add timeout for this.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271.h b/drivers/net/wireless/wl12xx/wl1271.h
index 3576c1cb067f..cae489300e06 100644
--- a/drivers/net/wireless/wl12xx/wl1271.h
+++ b/drivers/net/wireless/wl12xx/wl1271.h
@@ -296,6 +296,7 @@ struct wl1271_rx_mem_pool_addr {
 struct wl1271_scan {
         struct cfg80211_scan_request *req;
         bool *scanned_ch;
+        bool failed;
         u8 state;
         u8 ssid[IW_ESSID_MAX_SIZE+1];
         size_t ssid_len;
@@ -419,7 +420,7 @@ struct wl1271 {
 
         /* Are we currently scanning */
         struct wl1271_scan scan;
-        struct work_struct scan_complete_work;
+        struct delayed_work scan_complete_work;
 
         /* Our association ID */
         u16 aid;