Re: [PATCH] of: partitions: Skip fixup for devices with no partitions

[Sascha Hauer <sha@pengutronix.de>]

On Mon, Oct 11, 2021 at 12:19:33PM -0700, Trent Piepho wrote:
> If the device has no partitions, e.g. most EEPROM or OTP memory,
> of_partition_fixup() can exit early, before trying to find the kernel dt
> node and calling of_fixup_partitions().
> 
> This avoids spurious error messages when the kernel dt node doesn't
> exist.  E.g., for an EEPROM in the Barebox dtb but not in the kernel
> dtb, Barebox will display an error about being unable to fixup the
> kernel dt node, however, if it had found the node it would just return
> without doing anything since the partition list is empty, so really
> there is no error.
> 
> Signed-off-by: Trent Piepho <trent.piepho@igorinstitute.com>
> ---
>  drivers/of/partition.c | 3 +++
>  1 file changed, 3 insertions(+)

Applied, thanks

Sascha

> 
> diff --git a/drivers/of/partition.c b/drivers/of/partition.c
> index 10081363d..18b138f00 100644
> --- a/drivers/of/partition.c
> +++ b/drivers/of/partition.c
> @@ -256,6 +256,9 @@ static int of_partition_fixup(struct device_node *root, void *ctx)
>  	if (!cdev->device_node)
>  		return -EINVAL;
>  
> +	if (list_empty(&cdev->partitions))
> +		return 0;
> +
>  	name = of_get_reproducible_name(cdev->device_node);
>  	np = of_find_node_by_reproducible_name(root, name);
>  	free(name);
> -- 
> 2.31.1
> 
> 
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