Re: [PATCH v3 4/8] mmc/core/block: add error handling support for add_disk()
From: Ulf Hansson <hidden>
Date: 2021-09-06 17:10:52
Also in:
dm-devel, linux-block, linux-nvme, linux-scsi, lkml
On Mon, 30 Aug 2021 at 23:26, Luis Chamberlain [off-list ref] wrote:
We never checked for errors on add_disk() as this function returned void. Now that this is fixed, use the shiny new error handling. The caller only cleanups the disk if we pass on an allocated md but on error we return return ERR_PTR(ret), and so we must do all the unwinding ourselves. Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Queued for v5.16 on the temporary devel branch, thanks! Kind regards Uffe
quoted hunk ↗ jump to hunk
--- drivers/mmc/core/block.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index 6a15fdf6e5f2..9b2856aa6231 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c@@ -2453,9 +2453,14 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, /* used in ->open, must be set before add_disk: */ if (area_type == MMC_BLK_DATA_AREA_MAIN) dev_set_drvdata(&card->dev, md); - device_add_disk(md->parent, md->disk, mmc_disk_attr_groups); + ret = device_add_disk(md->parent, md->disk, mmc_disk_attr_groups); + if (ret) + goto err_cleanup_queue; return md; + err_cleanup_queue: + blk_cleanup_queue(md->disk->queue); + blk_mq_free_tag_set(&md->queue.tag_set); err_kfree: kfree(md); out: --2.30.2