Messages in this thread | | | From | Guenter Roeck <> | Date | Thu, 10 Nov 2016 12:43:21 -0800 | Subject | Re: [patch] iio: cros_ec_sensors_core: signedness bug in cros_ec_sensors_read_lpc() |
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Hi Dan,
On Thu, Nov 10, 2016 at 11:39 AM, Dan Carpenter <dan.carpenter@oracle.com> wrote: > "status" is a u8 so checking for negatives doesn't work. We can just > use "ret" here instead. > > Fixes: 974e6f02e27e ("iio: cros_ec_sensors_core: Add common functions for the ChromeOS EC Sensor Hub.") > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> >
Also fixed with https://lkml.org/lkml/2016/11/9/807
Guenter
> diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c > index a3be799..416cae5 100644 > --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c > +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c > @@ -291,15 +291,15 @@ int cros_ec_sensors_read_lpc(struct iio_dev *indio_dev, > return -EIO; > > /* Read status byte until EC is not busy. */ > - status = cros_ec_sensors_read_until_not_busy(st); > - if (status < 0) > - return status; > + ret = cros_ec_sensors_read_until_not_busy(st); > + if (ret < 0) > + return ret; > > /* > * Store the current sample id so that we can compare to the > * sample id after reading the data. > */ > - samp_id = status & EC_MEMMAP_ACC_STATUS_SAMPLE_ID_MASK; > + samp_id = ret & EC_MEMMAP_ACC_STATUS_SAMPLE_ID_MASK; > > /* Read all EC data, format it, and store it into data. */ > ret = cros_ec_sensors_read_data_unsafe(indio_dev, scan_mask,
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