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null_blk: use available 'dev' in nullb_device_power_store() 

We already have this pointer, no need to use to_nullb_device()
again.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2017-08-28 15:06:31 -06:00
parent 060fd198a3
commit b3c3051220
1 changed files with 1 additions and 1 deletions
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2
drivers/block/null_blk.c
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@ -375,7 +375,7 @@ static ssize_t nullb_device_power_store(struct config_item *item,
set_bit(NULLB_DEV_FL_CONFIGURED, &dev->flags);
dev->power = newp;
} else if (to_nullb_device(item)->power && !newp) {
} else if (dev->power && !newp) {
mutex_lock(&lock);
dev->power = newp;
null_del_dev(dev->nullb);