| Message ID | 20190111195707.2086-3-dmurphy@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3,1/3] iio: ti-ads124s08: Add DT binding documentation | expand |
On Fri, 11 Jan 2019 13:57:07 -0600 Dan Murphy <dmurphy@ti.com> wrote: > Per Jonathan Cameron, the buffer needs to allocate room for a > 64 bit timestamp as well as the channels. Change the buffer > to allocate this additional space. > > Fixes: 2a86487786b5c ("iio: adc: ti-ads8688: add trigger and buffer support") > Signed-off-by: Dan Murphy <dmurphy@ti.com> Applied to the fixes-togreg branch of iio.git and marked for stable. Thanks for fixing this up! Jonathan > --- > > v3 - Updated the buffer allocation definition I also dropped the device managed > patch as I don't have time to invest in that code - https://lore.kernel.org/patchwork/patch/1023971/ > v2 - New patch suggested change by maintainer - https://lore.kernel.org/patchwork/patch/1021048/ > > drivers/iio/adc/ti-ads8688.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/iio/adc/ti-ads8688.c b/drivers/iio/adc/ti-ads8688.c > index 184d686ebd99..8b4568edd5cb 100644 > --- a/drivers/iio/adc/ti-ads8688.c > +++ b/drivers/iio/adc/ti-ads8688.c > @@ -41,6 +41,7 @@ > > #define ADS8688_VREF_MV 4096 > #define ADS8688_REALBITS 16 > +#define ADS8688_MAX_CHANNELS 8 > > /* > * enum ads8688_range - ADS8688 reference voltage range > @@ -385,7 +386,7 @@ static irqreturn_t ads8688_trigger_handler(int irq, void *p) > { > struct iio_poll_func *pf = p; > struct iio_dev *indio_dev = pf->indio_dev; > - u16 buffer[8]; > + u16 buffer[ADS8688_MAX_CHANNELS + sizeof(s64)/sizeof(u16)]; > int i, j = 0; > > for (i = 0; i < indio_dev->masklength; i++) {
diff --git a/drivers/iio/adc/ti-ads8688.c b/drivers/iio/adc/ti-ads8688.c index 184d686ebd99..8b4568edd5cb 100644 --- a/drivers/iio/adc/ti-ads8688.c +++ b/drivers/iio/adc/ti-ads8688.c @@ -41,6 +41,7 @@ #define ADS8688_VREF_MV 4096 #define ADS8688_REALBITS 16 +#define ADS8688_MAX_CHANNELS 8 /* * enum ads8688_range - ADS8688 reference voltage range @@ -385,7 +386,7 @@ static irqreturn_t ads8688_trigger_handler(int irq, void *p) { struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; - u16 buffer[8]; + u16 buffer[ADS8688_MAX_CHANNELS + sizeof(s64)/sizeof(u16)]; int i, j = 0; for (i = 0; i < indio_dev->masklength; i++) {
Per Jonathan Cameron, the buffer needs to allocate room for a 64 bit timestamp as well as the channels. Change the buffer to allocate this additional space. Fixes: 2a86487786b5c ("iio: adc: ti-ads8688: add trigger and buffer support") Signed-off-by: Dan Murphy <dmurphy@ti.com> --- v3 - Updated the buffer allocation definition I also dropped the device managed patch as I don't have time to invest in that code - https://lore.kernel.org/patchwork/patch/1023971/ v2 - New patch suggested change by maintainer - https://lore.kernel.org/patchwork/patch/1021048/ drivers/iio/adc/ti-ads8688.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)