Re: [PATCH 11/18] block: parse partition table on block device registration

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On Wed, May 31, 2023 at 04:59:20PM +0200, Ahmad Fatoum wrote:
> Every instance where we register a block device, it's followed by an
> attempt to parse the partition table, most often with a warning when
> it fails. Thus let's move partition table parsing into
> blockdevice_register.
> 
> Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> ---
>  arch/sandbox/board/hostfile.c | 4 ----
>  common/block.c                | 6 ++++++
>  drivers/ata/disk_ata_drive.c  | 5 -----
>  drivers/block/efi-block-io.c  | 9 +--------
>  drivers/block/virtio_blk.c    | 8 +-------
>  drivers/mci/mci-core.c        | 6 ------
>  drivers/nvme/host/core.c      | 5 -----
>  drivers/usb/storage/usb.c     | 5 -----
>  8 files changed, 8 insertions(+), 40 deletions(-)
> 
> diff --git a/arch/sandbox/board/hostfile.c b/arch/sandbox/board/hostfile.c
> index d0f400787d7a..a1ab06b87770 100644
> --- a/arch/sandbox/board/hostfile.c
> +++ b/arch/sandbox/board/hostfile.c
> @@ -166,10 +166,6 @@ static int hf_probe(struct device *dev)
>  		if (err)
>  			return err;
>  
> -		err = parse_partition_table(&priv->blk);
> -		if (err)
> -			dev_warn(dev, "No partition table found\n");
> -
>  		dev_info(dev, "registered as block device\n");
>  	} else {
>  		cdev->name = np->name;
> diff --git a/common/block.c b/common/block.c
> index c39269d3a692..98adcfdf3dab 100644
> --- a/common/block.c
> +++ b/common/block.c
> @@ -6,6 +6,7 @@
>   */
>  #include <common.h>
>  #include <block.h>
> +#include <disks.h>
>  #include <malloc.h>
>  #include <linux/err.h>
>  #include <linux/list.h>
> @@ -408,6 +409,11 @@ int blockdevice_register(struct block_device *blk)
>  
>  	cdev_create_default_automount(&blk->cdev);
>  
> +	/* Lack of partition table is unusual, but not a failure */
> +	ret = parse_partition_table(blk);
> +	if (ret)
> +		dev_warn(blk->dev, "No partition table found\n");

This is not changed in this series, so it's ok like this, but should
this really be a warning? Using a raw device without a partition table
seems like a legitimate usecase.

Sascha


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