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    Subject[PATCH 4.19 09/44] iio: ti-ads8688: Update buffer allocation for timestamps
    Date
    4.19-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    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++) {

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