On Thu, Apr 25, 2024 at 01:22:45PM +0100, Conor Dooley wrote: > On Thu, Apr 25, 2024 at 02:42:32PM +0300, marius.cristea@xxxxxxxxxxxxx wrote: > > From: Marius Cristea <marius.cristea@xxxxxxxxxxxxx> > > > > Fix accessing out of bounds array index for average > > current and voltage measurements. The device itself has > > only 4 channels, but in sysfs there are "fake" > > channels for the average voltages and currents too. > > > > Fixes: 0fb528c8255b: "iio: adc: adding support for PAC193x" > > Reported-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> > > Signed-off-by: Marius Cristea <marius.cristea@xxxxxxxxxxxxx> Huh, this is an empty message. I intended to send some tags, but must not have saved the buffer. Closes: https://lore.kernel.org/linux-iio/20240405-embellish-bonnet-ab5f10560d93@wendy/ Tested-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> Cheers, Conor. > > --- > > drivers/iio/adc/pac1934.c | 9 +++++++++ > > 1 file changed, 9 insertions(+) > > > > diff --git a/drivers/iio/adc/pac1934.c b/drivers/iio/adc/pac1934.c > > index f751260605e4..456f12faa348 100644 > > --- a/drivers/iio/adc/pac1934.c > > +++ b/drivers/iio/adc/pac1934.c > > @@ -787,6 +787,15 @@ static int pac1934_read_raw(struct iio_dev *indio_dev, > > s64 curr_energy; > > int ret, channel = chan->channel - 1; > > > > + /* > > + * For AVG the index should be between 5 to 8. > > + * To calculate PAC1934_CH_VOLTAGE_AVERAGE, > > + * respectively PAC1934_CH_CURRENT real index, we need > > + * to remove the added offset (PAC1934_MAX_NUM_CHANNELS). > > + */ > > + if (channel >= PAC1934_MAX_NUM_CHANNELS) > > + channel = channel - PAC1934_MAX_NUM_CHANNELS; > > + > > ret = pac1934_retrieve_data(info, PAC1934_MIN_UPDATE_WAIT_TIME_US); > > if (ret < 0) > > return ret; > > > > base-commit: b80ad8e3cd2712b78b98804d1f59199680d8ed91 > > -- > > 2.34.1 > >
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