diff mbox series

[v3,4/8] mmc/core/block: add error handling support for add_disk()

Message ID 20210830212538.148729-5-mcgrof@kernel.org (mailing list archive)
State New, archived
Headers show
Series block: first batch of add_disk() error handling conversions | expand

Commit Message

Luis Chamberlain Aug. 30, 2021, 9:25 p.m. UTC
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>
---
 drivers/mmc/core/block.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

Comments

Ulf Hansson Sept. 6, 2021, 5:10 p.m. UTC | #1
On Mon, 30 Aug 2021 at 23:26, Luis Chamberlain <mcgrof@kernel.org> 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


> ---
>  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
>

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diff mbox series

Patch

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: