Re: [PATCH v3 5/6] iio: light: stk3310: log error if reading the chip id fails

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On Mon, Oct 28, 2024 at 04:45:35PM +0200, Andy Shevchenko wrote:
> On Mon, Oct 28, 2024 at 10:19:59AM -0400, Aren Moynihan wrote:
> > If the chip isn't powered, this call is likely to return an error.
> > Without a log here the driver will silently fail to probe. Common errors
> > are ENXIO (when the chip isn't powered) and ETIMEDOUT (when the i2c bus
> > isn't powered).
> 
> The commit message does not explain why dev_err_probe() has been chosen
> and not simple dev_err().

This function is only called from stk3310_probe, and this condition
should propagate it's error, so it fits what dev_err_probe is designed
for. dev_err would be pretty much equivalent just longer, like this:

if (ret < 0) {
	dev_err(&client->dev, "failed to read chip it: %d\n", ret);
	return ret;
}

Regards
 - Aren




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