iwmc3200wifi: Support unexpected reboot barker

We can receive unexpected reboot barker at any time, and we're supposed to
reset the whole device then.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/rx.c b/drivers/net/wireless/iwmc3200wifi/rx.c
index 5fa0a63ef0bf..bca3bb2d2dec 100644
--- a/drivers/net/wireless/iwmc3200wifi/rx.c
+++ b/drivers/net/wireless/iwmc3200wifi/rx.c
@@ -1321,6 +1321,14 @@ int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
 
         switch (le32_to_cpu(hdr->cmd)) {
         case UMAC_REBOOT_BARKER:
+                if (test_bit(IWM_STATUS_READY, &iwm->status)) {
+                        IWM_ERR(iwm, "Unexpected BARKER\n");
+
+                        schedule_work(&iwm->reset_worker);
+
+                        return 0;
+                }
+
                 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
                                       IWM_SRC_UDMA, buf, buf_size);
         case UMAC_ACK_BARKER: