static int memory_block_change_state(struct memory_block *mem,
unsigned long to_state, unsigned long from_state_req)
{
int ret = 0;
mutex_lock(&mem->state_mutex);
if (mem->state != from_state_req) {
ret = -EINVAL;
goto out;
}
if (to_state == MEM_OFFLINE)
mem->state = MEM_GOING_OFFLINE;
ret = memory_block_action(mem->start_section_nr, to_state);
if (ret)
mem->state = from_state_req;
else
mem->state = to_state;
out:
mutex_unlock(&mem->state_mutex);
return ret;
}
static int memory_block_change_state(struct memory_block *mem,
unsigned long to_state, unsigned long from_state_req)
{
int ret = 0;
if (mem->state != from_state_req)
return -EINVAL;
if (to_state == MEM_OFFLINE)
mem->state = MEM_GOING_OFFLINE;
ret = memory_block_action(mem->start_section_nr, to_state,
mem->online_type);
mem->state = ret ? from_state_req : to_state;
return ret;
}
static int memory_block_change_state(struct memory_block *mem,
unsigned long to_state, unsigned long from_state_req)
{
int ret = 0;
mutex_lock(&mem->state_mutex);
if (mem->state != from_state_req) {
ret = -EINVAL;
goto out;
}
ret = memory_block_action(mem, to_state);
if (!ret)
mem->state = to_state;
out:
mutex_unlock(&mem->state_mutex);
return ret;
}
static int memory_block_change_state(struct memory_block *mem,
unsigned long to_state, unsigned long from_state_req)
{
int ret = 0;
mutex_lock(&mem->state_mutex);
if (mem->state != from_state_req) {
ret = -EINVAL;
goto out;
}
if (to_state == MEM_OFFLINE)
mem->state = MEM_GOING_OFFLINE;
ret = memory_block_action(mem->start_section_nr, to_state);
if (ret) {
mem->state = from_state_req;
goto out;
}
mem->state = to_state;
switch (mem->state) {
case MEM_OFFLINE:
kobject_uevent(&mem->dev.kobj, KOBJ_OFFLINE);
break;
case MEM_ONLINE:
kobject_uevent(&mem->dev.kobj, KOBJ_ONLINE);
break;
default:
break;
}
out:
mutex_unlock(&mem->state_mutex);
return ret;
}