237 static int chsc_async(struct chsc_async_area *chsc_area,  in chsc_async()  argument
246 	chsc_area->header.key = PAGE_DEFAULT_KEY >> 4;  in chsc_async()
255 		chsc_area->header.sid = sch->schid;  in chsc_async()
258 		cc = chsc(chsc_area);  in chsc_async()
288 static void chsc_log_command(void *chsc_area)  in chsc_log_command()  argument
292 	snprintf(dbf, sizeof(dbf), "CHSC:%x", ((uint16_t *)chsc_area)[1]);  in chsc_log_command()
294 	CHSC_LOG_HEX(0, chsc_area, 32);  in chsc_log_command()
323 	struct chsc_async_area *chsc_area;  in chsc_ioctl_start()  local
330 	chsc_area = (void *)get_zeroed_page(GFP_DMA | GFP_KERNEL);  in chsc_ioctl_start()
331 	if (!chsc_area)  in chsc_ioctl_start()
339 	if (copy_from_user(chsc_area, user_area, PAGE_SIZE)) {  in chsc_ioctl_start()
343 	chsc_log_command(chsc_area);  in chsc_ioctl_start()
345 	ret = chsc_async(chsc_area, request);  in chsc_ioctl_start()
353 		if (copy_to_user(user_area, chsc_area, PAGE_SIZE))  in chsc_ioctl_start()
359 	free_page((unsigned long)chsc_area);  in chsc_ioctl_start()
427 	struct chsc_sync_area *chsc_area;  in chsc_ioctl_start_sync()  local
430 	chsc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);  in chsc_ioctl_start_sync()
431 	if (!chsc_area)  in chsc_ioctl_start_sync()
433 	if (copy_from_user(chsc_area, user_area, PAGE_SIZE)) {  in chsc_ioctl_start_sync()
437 	if (chsc_area->header.code & 0x4000) {  in chsc_ioctl_start_sync()
441 	chsc_log_command(chsc_area);  in chsc_ioctl_start_sync()
442 	ccode = chsc(chsc_area);  in chsc_ioctl_start_sync()
447 	if (copy_to_user(user_area, chsc_area, PAGE_SIZE))  in chsc_ioctl_start_sync()
452 	free_page((unsigned long)chsc_area);  in chsc_ioctl_start_sync()