18.08.2021 08:28, Christoph Hellwig пишет:
> On Wed, Aug 18, 2021 at 03:55:44AM +0300, Dmitry Osipenko wrote:
>> +static int mmc_blk_alternative_gpt_sector(struct block_device *bdev,
>> + sector_t *sector)
>> +{
>> + struct mmc_card *card = mmc_bdev_to_card(bdev);
>> +
>> + if (!card)
>> + return -ENODEV;
>> +
>> + if (!card->host->ops->alternative_gpt_sector)
>> + return -EOPNOTSUPP;
>> +
>> + return card->host->ops->alternative_gpt_sector(card, sector);
>> +}
>> +
>
>> +static struct mmc_card *mmc_bdev_to_card(struct block_device *bdev)
>> +{
>> + struct mmc_blk_data *md;
>> +
>> + if (bdev->bd_disk->fops != &mmc_bdops)
>> + return NULL;
>
> No need for this check bow that it is only called through mmc_bdops.
Alright
>> +
>> + md = mmc_blk_get(bdev->bd_disk);
>> + if (!md)
>> + return NULL;
>> +
>> + return md->queue.card;
>> +}
>
> This reference seems to never be dropped anywhere.
>
Indeed, I missed that it bumps the refcnt.
