mwifiex: Command 7 handling for USB chipsets

Firmware image for newer USB chipsets starts with a command 7 block
(special command). It doesn't contain data length field. This patch adds
necessary handling.

Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/marvell/mwifiex/usb.c

@@ -1026,6 +1026,10 @@ static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
 			dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd);
 			tlen += sizeof(struct fw_header);
 
+			/* Command 7 doesn't have data length field */
+			if (dnld_cmd == FW_CMD_7)
+				dlen = 0;
+
 			memcpy(fwdata->data, &firmware[tlen], dlen);
 
 			fwdata->seq_num = cpu_to_le32(fw_seqnum);

drivers/net/wireless/marvell/mwifiex/usb.h

@@ -51,6 +51,7 @@
 #define FW_DNLD_TX_BUF_SIZE	620
 #define FW_DNLD_RX_BUF_SIZE	2048
 #define FW_HAS_LAST_BLOCK	0x00000004
+#define FW_CMD_7		0x00000007
 
 #define FW_DATA_XMIT_SIZE \
 	(sizeof(struct fw_header) + dlen + sizeof(u32))