Re: [PATCH v3 1/8] scsi/sd: add error handling support for add_disk()

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On Mon, Aug 30, 2021 at 02:25:31PM -0700, Luis Chamberlain 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.
> 
> Reviewed-by: Christoph Hellwig <hch@xxxxxx>
> Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
> ---
>  drivers/scsi/sd.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
> index 610ebba0d66e..8c1273fff23e 100644
> --- a/drivers/scsi/sd.c
> +++ b/drivers/scsi/sd.c
> @@ -3487,7 +3487,11 @@ static int sd_probe(struct device *dev)
>  		pm_runtime_set_autosuspend_delay(dev,
>  			sdp->host->hostt->rpm_autosuspend_delay);
>  	}
> -	device_add_disk(dev, gd, NULL);
> +
> +	error = device_add_disk(dev, gd, NULL);
> +	if (error)
> +		goto out_free_index;
> +

The error handling is actually wrong, see 

	https://lore.kernel.org/linux-scsi/c93f3010-13c9-e07f-1458-b6b47a27057b@xxxxxxx/T/#t

Maybe you can base on that patch.


Thanks,
Ming




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