megasas_iocpacket
#define MEGASAS_IOC_FIRMWARE _IOWR('M', 1, struct megasas_iocpacket)
struct megasas_iocpacket __user * user_ioc,
struct megasas_iocpacket *ioc)
static struct megasas_iocpacket *
struct megasas_iocpacket *ioc;
size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
struct megasas_iocpacket __user *user_ioc =
(struct megasas_iocpacket __user *)arg;
struct megasas_iocpacket *ioc;
ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));