[PATCH] mwifiex: disable auto deep sleep before unloading the driver

[Bing Zhao <bzhao@xxxxxxxxxxx>]

From: Amitkumar Karwar <akarwar@xxxxxxxxxxx>

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@xxxxxxxxxxx>
Signed-off-by: Bing Zhao <bzhao@xxxxxxxxxxx>
---
 drivers/net/wireless/mwifiex/ioctl.h     |    1 +
 drivers/net/wireless/mwifiex/main.h      |    1 +
 drivers/net/wireless/mwifiex/sdio.c      |    3 +++
 drivers/net/wireless/mwifiex/sta_ioctl.c |   14 ++++++++++++++
 4 files changed, 19 insertions(+), 0 deletions(-)

diff --git a/drivers/net/wireless/mwifiex/ioctl.h b/drivers/net/wireless/mwifiex/ioctl.h
index 9929749..bd9e074 100644
--- a/drivers/net/wireless/mwifiex/ioctl.h
+++ b/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
 
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index 84f780d..e6db047 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/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,
diff --git a/drivers/net/wireless/mwifiex/sdio.c b/drivers/net/wireless/mwifiex/sdio.c
index f7105a9..82098ac 100644
--- a/drivers/net/wireless/mwifiex/sdio.c
+++ b/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);
diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c
index 6547013..10ef9e9 100644
--- a/drivers/net/wireless/mwifiex/sta_ioctl.c
+++ b/drivers/net/wireless/mwifiex/sta_ioctl.c
@@ -487,6 +487,20 @@ int mwifiex_set_radio_band_cfg(struct mwifiex_private *priv,
 }
 
 /*
+ * 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.
  *
  * This function performs validity checking on channel/frequency
-- 
1.7.0.2

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