4.19-stable review patch. If anyone has any objections, please let me know.
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From: Dan Murphy dmurphy@ti.com
commit f214ff521fb1f861c8d7f7d0af98b06bf61b3369 upstream.
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 Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/iio/adc/ti-ads8688.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- 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_handl { 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++) {