[PATCH v9 04/10] spmi: Implement spmi_subdevice_alloc_and_add() and devm variant

[sashiko-bot at kernel.org]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Low] dev_set_name() uses the '%d' format specifier for a variable of type 'unsigned int', which will cause a -Wformat compiler warning.
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commit 35ac69140b9b2d8a3b0e2aa01fe5f5ac3ffe4d02
Author: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>

spmi: Implement spmi_subdevice_alloc_and_add() and devm variant

This commit introduces functions for managing sub-devices of an SPMI
device, including spmi_subdevice_alloc_and_add() and its devm
variant. These allow complex PMICs with multiple sub-devices to be
properly modeled and managed via the SPMI bus.

> diff --git a/drivers/spmi/spmi.c b/drivers/spmi/spmi.c
> index 91a40ea8031ad..7945cacf6d655 100644
> --- a/drivers/spmi/spmi.c
> +++ b/drivers/spmi/spmi.c

[ ... ]

> @@ -428,6 +454,58 @@ struct spmi_device *spmi_device_alloc(struct spmi_controller *ctrl)
>  }
>  EXPORT_SYMBOL_GPL(spmi_device_alloc);
>  
> +/**
> + * spmi_subdevice_alloc_and_add(): Allocate and add a new SPMI sub-device
> + * @sparent:	SPMI parent device with previously registered SPMI controller
> + *
> + * Returns:
> + * Pointer to newly allocated SPMI sub-device for success or error pointer.
> + */
> +struct spmi_subdevice *spmi_subdevice_alloc_and_add(struct spmi_device *sparent)
> +{
> +	struct spmi_subdevice *sub_sdev;
> +	struct spmi_device *sdev;
> +	int ret;
> +
> +	sub_sdev = kzalloc(sizeof(*sub_sdev), GFP_KERNEL);
> +	if (!sub_sdev)
> +		return ERR_PTR(-ENOMEM);
> +
> +	sdev = &sub_sdev->sdev;
> +	sdev->ctrl = sparent->ctrl;
> +	sdev->usid = sparent->usid;
> +
> +	ret = ida_alloc(&spmi_subdevice_ida, GFP_KERNEL);
> +	if (ret < 0) {
> +		kfree(sub_sdev);
> +		return ERR_PTR(ret);
> +	}
> +	sub_sdev->devid = ret;
> +
> +	device_initialize(&sdev->dev);
> +	sdev->dev.parent = &sparent->dev;
> +	sdev->dev.bus = &spmi_bus_type;
> +	sdev->dev.type = &spmi_subdev_type;
> +
> +	ret = dev_set_name(&sdev->dev, "%u-%02x.%d.auto",
> +			   sdev->ctrl->nr, sdev->usid, sub_sdev->devid);

[Severity: Low]
This isn't a bug, but should this use %u instead of %d for the format
specifier? The devid field in struct spmi_subdevice is defined as an
unsigned int, which can cause a -Wformat compiler warning here.

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260608100949.36309-1-angelogioacchino.delregno@collabora.com?part=4