Re: [PATCH] iio: gyro: adis16260: fix division by zero in write_raw

[Jonathan Cameron <jic23@kernel.org>]

On Tue, 31 Mar 2026 12:04:45 +0100
Nuno Sá <noname.nuno@gmail.com> wrote:

> On Tue, Mar 31, 2026 at 01:13:00PM +0300, Antoniu Miclaus wrote:
> > Add a validation check for the sampling frequency value before using it
> > as a divisor. A user writing zero to the sampling_frequency sysfs
> > attribute triggers a division by zero in the kernel.
> > 
> > Fixes: 089a41985c6c ("staging: iio: adis16260 digital gyro driver")
> > Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
> > ---  
> 
> Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Applied to the fixes-togreg branch of iio.git and marked for stable.

Thanks,

Jonathan

> 
> >  drivers/iio/gyro/adis16260.c | 3 +++
> >  1 file changed, 3 insertions(+)
> > 
> > diff --git a/drivers/iio/gyro/adis16260.c b/drivers/iio/gyro/adis16260.c
> > index 586e6cfa14a9..91b9c5f18ec4 100644
> > --- a/drivers/iio/gyro/adis16260.c
> > +++ b/drivers/iio/gyro/adis16260.c
> > @@ -287,6 +287,9 @@ static int adis16260_write_raw(struct iio_dev *indio_dev,
> >  		addr = adis16260_addresses[chan->scan_index][1];
> >  		return adis_write_reg_16(adis, addr, val);
> >  	case IIO_CHAN_INFO_SAMP_FREQ:
> > +		if (val <= 0)
> > +			return -EINVAL;
> > +
> >  		if (spi_get_device_id(adis->spi)->driver_data)
> >  			t = 256 / val;
> >  		else
> > -- 
> > 2.43.0
> >