Re: [PATCH] iio: adc: nxp-sar-adc: fix division by zero in write_raw

[Jonathan Cameron]

On Mon, 20 Apr 2026 15:34:18 +0100
Jonathan Cameron <jic23@xxxxxxxxxx> wrote:

> On Wed, 1 Apr 2026 18:29:24 +0300
> Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx> wrote:
> 
> > Add a validation check for the sampling frequency value before using it
> > as a divisor. A user writing zero or a negative value to the
> > sampling_frequency sysfs attribute triggers a division by zero in the
> > kernel.
> > 
> > Also prevent unsigned integer underflow when the computed cycle count is
> > smaller than NXP_SAR_ADC_CONV_TIME, which would wrap the u32 inpsamp to
> > a huge value.
> > 
> > Fixes: fdee77dea4b6 ("iio: adc: Add the NXP SAR ADC support for the s32g2/3 platforms")
This tag is wrong.  I only just noticed when running final tests
before sending a pull request.  I obviously missed running them
earlier but please be very careful to get these right as I have
to rebase whenever one gets past me.

Correct hash is 4434072a893e

Jonathan