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mm: memory_hotplug: use put_device() if device_register fail

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if device_register() returned an error. Always use put_device()
to give up the initialized reference and release allocated memory.

Signed-off-by: Arvind Yadav <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Arvind Yadav 2018-04-26 21:12:09 +05:30 • committed by Greg Kroah-Hartman
commit 085aa2de56
1 changed files with 7 additions and 1 deletions
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8
drivers/base/memory.c
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@ -649,13 +649,19 @@ static const struct attribute_group *memory_memblk_attr_groups[] = {
static
int register_memory(struct memory_block *memory)
{
int ret;
memory->dev.bus = &memory_subsys;
memory->dev.id = memory->start_section_nr / sections_per_block;
memory->dev.release = memory_block_release;
memory->dev.groups = memory_memblk_attr_groups;
memory->dev.offline = memory->state == MEM_OFFLINE;
return device_register(&memory->dev);
ret = device_register(&memory->dev);
if (ret)
put_device(&memory->dev);
return ret;
}
static int init_memory_block(struct memory_block **memory,