mwifiex: disable auto deep sleep before unloading the driver

Since the auto deep sleep mode has been enabled at driver init time
we should disable it at driver unloading to shutdown the function
gracefully.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwifiex/ioctl.h

@@ -249,6 +249,7 @@ struct mwifiex_ds_hs_cfg {
 };
 
 #define DEEP_SLEEP_ON  1
+#define DEEP_SLEEP_OFF 0
 #define DEEP_SLEEP_IDLE_TIME	100
 #define PS_MODE_AUTO		1
 

drivers/net/wireless/mwifiex/main.h

@@ -929,6 +929,7 @@ int mwifiex_set_hs_params(struct mwifiex_private *priv,
 			      struct mwifiex_ds_hs_cfg *hscfg);
 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type);
 int mwifiex_enable_hs(struct mwifiex_adapter *adapter);
+int mwifiex_disable_auto_ds(struct mwifiex_private *priv);
 int mwifiex_get_signal_info(struct mwifiex_private *priv,
 			    struct mwifiex_ds_get_signal *signal);
 int mwifiex_drv_get_data_rate(struct mwifiex_private *priv,

drivers/net/wireless/mwifiex/sdio.c

@@ -133,6 +133,9 @@ mwifiex_sdio_remove(struct sdio_func *func)
 					adapter->priv[i]->media_connected)
 				mwifiex_deauthenticate(adapter->priv[i], NULL);
 
+		mwifiex_disable_auto_ds(mwifiex_get_priv(adapter,
+							 MWIFIEX_BSS_ROLE_ANY));
+
 		mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
 						MWIFIEX_BSS_ROLE_ANY),
 					 MWIFIEX_FUNC_SHUTDOWN);

drivers/net/wireless/mwifiex/sta_ioctl.c

@@ -486,6 +486,20 @@ int mwifiex_set_radio_band_cfg(struct mwifiex_private *priv,
 	return 0;
 }
 
+/*
+ * The function disables auto deep sleep mode.
+ */
+int mwifiex_disable_auto_ds(struct mwifiex_private *priv)
+{
+	struct mwifiex_ds_auto_ds auto_ds;
+
+	auto_ds.auto_ds = DEEP_SLEEP_OFF;
+
+	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
+				     DIS_AUTO_PS, BITMAP_AUTO_DS, &auto_ds);
+}
+EXPORT_SYMBOL_GPL(mwifiex_disable_auto_ds);
+
 /*
  * IOCTL request handler to set/get active channel.
  *