staging: wilc1000: use 'struct' to pack cfg header frame in wilc_wlan_cfg_commit()

Make use of 'struct' to pack cfg header in wilc_wlan_cfg_commit()
instead of byte by byte filling.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/wilc_wfi_netdevice.h

@@ -251,7 +251,7 @@ struct wilc {
 	struct mutex cfg_cmd_lock;
 	struct wilc_cfg_frame cfg_frame;
 	u32 cfg_frame_offset;
-	int cfg_seq_no;
+	u8 cfg_seq_no;
 
 	u8 *rx_buffer;
 	u32 rx_buffer_offset;

drivers/staging/wilc1000/wilc_wlan.c

@@ -1092,24 +1092,19 @@ static int wilc_wlan_cfg_commit(struct wilc_vif *vif, int type,
 {
 	struct wilc *wilc = vif->wilc;
 	struct wilc_cfg_frame *cfg = &wilc->cfg_frame;
-	int total_len = wilc->cfg_frame_offset + 4 + DRIVER_HANDLER_SIZE;
-	int seq_no = wilc->cfg_seq_no % 256;
-	int driver_handler = (u32)drv_handler;
+	int t_len = wilc->cfg_frame_offset + sizeof(struct wilc_cfg_cmd_hdr);
 
 	if (type == WILC_CFG_SET)
-		cfg->wid_header[0] = 'W';
+		cfg->hdr.cmd_type = 'W';
 	else
-		cfg->wid_header[0] = 'Q';
-	cfg->wid_header[1] = seq_no;
-	cfg->wid_header[2] = (u8)total_len;
-	cfg->wid_header[3] = (u8)(total_len >> 8);
-	cfg->wid_header[4] = (u8)driver_handler;
-	cfg->wid_header[5] = (u8)(driver_handler >> 8);
-	cfg->wid_header[6] = (u8)(driver_handler >> 16);
-	cfg->wid_header[7] = (u8)(driver_handler >> 24);
-	wilc->cfg_seq_no = seq_no;
-
-	if (!wilc_wlan_txq_add_cfg_pkt(vif, &cfg->wid_header[0], total_len))
+		cfg->hdr.cmd_type = 'Q';
+
+	cfg->hdr.seq_no = wilc->cfg_seq_no % 256;
+	cfg->hdr.total_len = cpu_to_le16(t_len);
+	cfg->hdr.driver_handler = cpu_to_le32(drv_handler);
+	wilc->cfg_seq_no = cfg->hdr.seq_no;
+
+	if (!wilc_wlan_txq_add_cfg_pkt(vif, (u8 *)&cfg->hdr, t_len))
 		return -1;
 
 	return 0;

drivers/staging/wilc1000/wilc_wlan.h

@@ -14,7 +14,6 @@
  *      Mac eth header length
  *
  ********************************************/
-#define DRIVER_HANDLER_SIZE		4
 #define MAX_MAC_HDR_LEN			26 /* QOS_MAC_HDR_LEN */
 #define SUB_MSDU_HEADER_LENGTH		14
 #define SNAP_HDR_LEN			8
@@ -251,14 +250,21 @@ struct wilc_hif_func {
 
 #define MAX_CFG_FRAME_SIZE	1468
 
+struct wilc_cfg_cmd_hdr {
+	u8 cmd_type;
+	u8 seq_no;
+	__le16 total_len;
+	__le32 driver_handler;
+};
+
 struct wilc_cfg_frame {
-	u8 wid_header[8];
+	struct wilc_cfg_cmd_hdr hdr;
 	u8 frame[MAX_CFG_FRAME_SIZE];
 };
 
 struct wilc_cfg_rsp {
-	int type;
-	u32 seq_no;
+	u8 type;
+	u8 seq_no;
 };
 
 struct wilc;