ath6kl_usb_ctrl_diag_cmd_write
struct ath6kl_usb_ctrl_diag_cmd_write *cmd;
cmd = (struct ath6kl_usb_ctrl_diag_cmd_write *) ar_usb->diag_cmd_buffer;
memset(cmd, 0, sizeof(struct ath6kl_usb_ctrl_diag_cmd_write));
#define ATH6KL_USB_MAX_DIAG_CMD (sizeof(struct ath6kl_usb_ctrl_diag_cmd_write))
sizeof(struct ath6kl_usb_ctrl_diag_cmd_write),