Re: [PATCH 5/5] gpio: line-mux: fix unsigned truncation of property count error

[shao.mingyin]

On Mon, 2026-11-09 at 09:29 +0100, Jonas Jelonek wrote:
> Nit: Please adjust to keep reverse christmas tree. I think 'int ret' and
> 'int ngpio' can be merged too.

Right — shrinking "unsigned int ngpio" to "int ngpio" put that line
before "size_t size" and broke the reverse christmas tree ordering.
I'll merge the two ints and keep the longest-first order:

	struct device *dev = &pdev->dev;
	struct gpio_lmux *glm;
	size_t size;
	int ngpio, ret;

> Maybe return the error if < 0, instead of -EINVAL for all?

Agreed. device_property_count_u32() can also return -ENODATA, -EPROTO,
-EOVERFLOW or -ENXIO, and folding them all into -EINVAL would hide which
one failed. I'll propagate the errno and only map a zero count to
-EINVAL:

	ngpio = device_property_count_u32(dev, "gpio-line-mux-states");
	if (ngpio < 0)
		return ngpio;
	if (!ngpio)
		return -EINVAL;

I'll repost as v2 with your Reviewed-by.

Best,
Shao Mingyin