mwifiex: remove unnecessary struct mwifiex_opt_sleep_confirm_buffer

The structure definition is
struct mwifiex_opt_sleep_confirm_buffer {
       u8 hdr[4];
       struct mwifiex_opt_sleep_confirm ps_cfm_sleep;
} __packed;

For sleep_confirm command we already reserve 4 bytes (using skb_reserve())
for an interface header. It will be filled later by interface specific code.
We don't need "hdr[4]" element in above structure. So we can use
"struct mwifiex_opt_sleep_confirm" directly instead of
"struct mwifiex_opt_sleep_confirm_buffer".

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwifiex/cmdevt.c

@@ -223,24 +223,23 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv,
 static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
 {
 	int ret;
-	u16 cmd_len;
 	struct mwifiex_private *priv;
-	struct mwifiex_opt_sleep_confirm_buffer *sleep_cfm_buf =
-				(struct mwifiex_opt_sleep_confirm_buffer *)
+	struct mwifiex_opt_sleep_confirm *sleep_cfm_buf =
+				(struct mwifiex_opt_sleep_confirm *)
 				adapter->sleep_cfm->data;
-	cmd_len = sizeof(struct mwifiex_opt_sleep_confirm);
 	priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
-	sleep_cfm_buf->ps_cfm_sleep.seq_num =
+	sleep_cfm_buf->seq_num =
 		cpu_to_le16((HostCmd_SET_SEQ_NO_BSS_INFO
 					(adapter->seq_num, priv->bss_num,
 					 priv->bss_type)));
 	adapter->seq_num++;
 
+	skb_push(adapter->sleep_cfm, INTF_HEADER_LEN);
 	ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
 					     adapter->sleep_cfm->data,
-					     adapter->sleep_cfm->len +
-					     INTF_HEADER_LEN, NULL);
+					     adapter->sleep_cfm->len, NULL);
+	skb_pull(adapter->sleep_cfm, INTF_HEADER_LEN);
 
 	if (ret == -1) {
 		dev_err(adapter->dev, "SLEEP_CFM: failed\n");
@@ -249,14 +248,14 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
 	}
 	if (GET_BSS_ROLE(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY))
 			== MWIFIEX_BSS_ROLE_STA) {
-		if (!sleep_cfm_buf->ps_cfm_sleep.resp_ctrl)
+		if (!sleep_cfm_buf->resp_ctrl)
 			/* Response is not needed for sleep
 			   confirm command */
 			adapter->ps_state = PS_STATE_SLEEP;
 		else
 			adapter->ps_state = PS_STATE_SLEEP_CFM;
 
-		if (!sleep_cfm_buf->ps_cfm_sleep.resp_ctrl
+		if (!sleep_cfm_buf->resp_ctrl
 				&& (adapter->is_hs_configured
 					&& !adapter->sleep_period.period)) {
 			adapter->pm_wakeup_card_req = true;

drivers/net/wireless/mwifiex/fw.h

@@ -1198,9 +1198,4 @@ struct mwifiex_opt_sleep_confirm {
 	__le16 action;
 	__le16 resp_ctrl;
 } __packed;
-
-struct mwifiex_opt_sleep_confirm_buffer {
-	u8 hdr[4];
-	struct mwifiex_opt_sleep_confirm ps_cfm_sleep;
-} __packed;
 #endif /* !_MWIFIEX_FW_H_ */

drivers/net/wireless/mwifiex/init.c

@@ -175,7 +175,7 @@ static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
 	}
 
 	adapter->sleep_cfm =
-		dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm_buffer)
+		dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
 				+ INTF_HEADER_LEN);
 
 	if (!adapter->sleep_cfm) {
@@ -197,10 +197,10 @@ static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
  */
 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
 {
-	struct mwifiex_opt_sleep_confirm_buffer *sleep_cfm_buf = NULL;
+	struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL;
 
-	skb_put(adapter->sleep_cfm, sizeof(sleep_cfm_buf->ps_cfm_sleep));
-	sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm_buffer *)
+	skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm));
+	sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *)
 						(adapter->sleep_cfm->data);
 
 	adapter->cmd_sent = false;
@@ -268,16 +268,14 @@ static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
 	mwifiex_wmm_init(adapter);
 
 	if (adapter->sleep_cfm) {
-		memset(&sleep_cfm_buf->ps_cfm_sleep, 0,
-			adapter->sleep_cfm->len);
-		sleep_cfm_buf->ps_cfm_sleep.command =
-			cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
-		sleep_cfm_buf->ps_cfm_sleep.size =
-			cpu_to_le16(adapter->sleep_cfm->len);
-		sleep_cfm_buf->ps_cfm_sleep.result = 0;
-		sleep_cfm_buf->ps_cfm_sleep.action = cpu_to_le16(SLEEP_CONFIRM);
-		sleep_cfm_buf->ps_cfm_sleep.resp_ctrl =
-			cpu_to_le16(RESP_NEEDED);
+		memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len);
+		sleep_cfm_buf->command =
+				cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
+		sleep_cfm_buf->size =
+				cpu_to_le16(adapter->sleep_cfm->len);
+		sleep_cfm_buf->result = 0;
+		sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM);
+		sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED);
 	}
 	memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params));
 	memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period));