| Message ID | 20240929112511.100292-2-vassilisamir@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | : pressure: bmp280: Improve pushing of data to buffer | expand |
On Sun, 29 Sep 2024 13:25:10 +0200 Vasileios Amoiridis <vassilisamir@gmail.com> wrote: > The adc values coming directly from the sensor in the BM{E,P}{2,3}xx > sensors are unsigned values so treat them as such. > > Fixes: 80cd23f43ddc ("iio: pressure: bmp280: Add triggered buffer support") Why is this a fix rather than a cleanup? Looks to me like all the values are going to be small enough that they fit either way. So good to tidy up for consistency etc, but why a fixes tag? I > Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com> > --- > drivers/iio/pressure/bmp280-core.c | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) > > diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c > index 6c2606f34ec4..472a6696303b 100644 > --- a/drivers/iio/pressure/bmp280-core.c > +++ b/drivers/iio/pressure/bmp280-core.c > @@ -1023,7 +1023,8 @@ static irqreturn_t bmp280_trigger_handler(int irq, void *p) > struct iio_poll_func *pf = p; > struct iio_dev *indio_dev = pf->indio_dev; > struct bmp280_data *data = iio_priv(indio_dev); > - s32 adc_temp, adc_press, t_fine; > + u32 adc_temp, adc_press; These are filled as part of a get_unaligned_be24() so the value will never be big enough that signed / unsigned should make any difference. > + s32 t_fine; > int ret; > > guard(mutex)(&data->lock); > @@ -1137,7 +1138,8 @@ static irqreturn_t bme280_trigger_handler(int irq, void *p) > struct iio_poll_func *pf = p; > struct iio_dev *indio_dev = pf->indio_dev; > struct bmp280_data *data = iio_priv(indio_dev); > - s32 adc_temp, adc_press, adc_humidity, t_fine; > + u32 adc_temp, adc_press, adc_humidity; Same with these. > + s32 t_fine; > int ret; > > guard(mutex)(&data->lock); > @@ -1616,7 +1618,8 @@ static irqreturn_t bmp380_trigger_handler(int irq, void *p) > struct iio_poll_func *pf = p; > struct iio_dev *indio_dev = pf->indio_dev; > struct bmp280_data *data = iio_priv(indio_dev); > - s32 adc_temp, adc_press, t_fine; These are similar but le24. > + u32 adc_temp, adc_press; > + s32 t_fine; > int ret; > > guard(mutex)(&data->lock);
On Sun, Sep 29, 2024 at 06:04:26PM +0100, Jonathan Cameron wrote: > On Sun, 29 Sep 2024 13:25:10 +0200 > Vasileios Amoiridis <vassilisamir@gmail.com> wrote: > > > The adc values coming directly from the sensor in the BM{E,P}{2,3}xx > > sensors are unsigned values so treat them as such. > > > > Fixes: 80cd23f43ddc ("iio: pressure: bmp280: Add triggered buffer support") > Why is this a fix rather than a cleanup? Looks to me like all the values > are going to be small enough that they fit either way. > So good to tidy up for consistency etc, but why a fixes tag? > > I > Hi Jonathan, I used the fixes tag because I though it was appropriate since it was using a wrong variable type even though it was not posing any functional thread (I mentioned it in the cover-letter as well). Since I am doing a new version I can drop the tag, no problem!!! Cheers, Vasilis > > Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com> > > --- > > drivers/iio/pressure/bmp280-core.c | 9 ++++++--- > > 1 file changed, 6 insertions(+), 3 deletions(-) > > > > diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c > > index 6c2606f34ec4..472a6696303b 100644 > > --- a/drivers/iio/pressure/bmp280-core.c > > +++ b/drivers/iio/pressure/bmp280-core.c > > @@ -1023,7 +1023,8 @@ static irqreturn_t bmp280_trigger_handler(int irq, void *p) > > struct iio_poll_func *pf = p; > > struct iio_dev *indio_dev = pf->indio_dev; > > struct bmp280_data *data = iio_priv(indio_dev); > > - s32 adc_temp, adc_press, t_fine; > > + u32 adc_temp, adc_press; > These are filled as part of a get_unaligned_be24() so the value will never > be big enough that signed / unsigned should make any difference. > > > + s32 t_fine; > > int ret; > > > > guard(mutex)(&data->lock); > > @@ -1137,7 +1138,8 @@ static irqreturn_t bme280_trigger_handler(int irq, void *p) > > struct iio_poll_func *pf = p; > > struct iio_dev *indio_dev = pf->indio_dev; > > struct bmp280_data *data = iio_priv(indio_dev); > > - s32 adc_temp, adc_press, adc_humidity, t_fine; > > + u32 adc_temp, adc_press, adc_humidity; > Same with these. > > + s32 t_fine; > > int ret; > > > > guard(mutex)(&data->lock); > > @@ -1616,7 +1618,8 @@ static irqreturn_t bmp380_trigger_handler(int irq, void *p) > > struct iio_poll_func *pf = p; > > struct iio_dev *indio_dev = pf->indio_dev; > > struct bmp280_data *data = iio_priv(indio_dev); > > - s32 adc_temp, adc_press, t_fine; > These are similar but le24. > > > + u32 adc_temp, adc_press; > > + s32 t_fine; > > int ret; > > > > guard(mutex)(&data->lock); >
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c index 6c2606f34ec4..472a6696303b 100644 --- a/drivers/iio/pressure/bmp280-core.c +++ b/drivers/iio/pressure/bmp280-core.c @@ -1023,7 +1023,8 @@ static irqreturn_t bmp280_trigger_handler(int irq, void *p) struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; struct bmp280_data *data = iio_priv(indio_dev); - s32 adc_temp, adc_press, t_fine; + u32 adc_temp, adc_press; + s32 t_fine; int ret; guard(mutex)(&data->lock); @@ -1137,7 +1138,8 @@ static irqreturn_t bme280_trigger_handler(int irq, void *p) struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; struct bmp280_data *data = iio_priv(indio_dev); - s32 adc_temp, adc_press, adc_humidity, t_fine; + u32 adc_temp, adc_press, adc_humidity; + s32 t_fine; int ret; guard(mutex)(&data->lock); @@ -1616,7 +1618,8 @@ static irqreturn_t bmp380_trigger_handler(int irq, void *p) struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; struct bmp280_data *data = iio_priv(indio_dev); - s32 adc_temp, adc_press, t_fine; + u32 adc_temp, adc_press; + s32 t_fine; int ret; guard(mutex)(&data->lock);
The adc values coming directly from the sensor in the BM{E,P}{2,3}xx sensors are unsigned values so treat them as such. Fixes: 80cd23f43ddc ("iio: pressure: bmp280: Add triggered buffer support") Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com> --- drivers/iio/pressure/bmp280-core.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)