null_blk: Fix return value of nullb_device_power_store()
[ Upstream commit d9ff882b ] When powering on a null_blk device that is not already on, the return value ret that is initialized to be count is reused to check the return value of null_add_dev(), leading to nullb_device_power_store() to return null_add_dev() return value (0 on success) instead of "count". So make sure to set ret to be equal to count when there are no errors. Fixes: a2db328b ("null_blk: fix null-ptr-dereference while configuring 'power' and 'submit_queues'") Signed-off-by:Damien Le Moal <dlemoal@kernel.org> Reviewed-by:
Yu Kuai <yukuai3@huawei.com> Reviewed-by:
Kanchan Joshi <joshi.k@samsung.com> Link: https://lore.kernel.org/r/20240527043445.235267-1-dlemoal@kernel.org Signed-off-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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b81e1c5a
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