From: Jonathan Cameron Jonathan.Cameron@huawei.com
[ Upstream commit ec90b52c07c0403a6db60d752484ec08d605ead0 ]
Add __aligned(8) to ensure the buffer passed to iio_push_to_buffers_with_timestamp() is suitable for the naturally aligned timestamp that will be inserted.
Here an explicit structure is not used, because the holes would necessitate the addition of an explict memset(), to avoid a potential kernel data leak, making for a less minimal fix.
Fixes: 55707294c4eb ("iio: light: Add support for vishay vcnl4035") Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Cc: Parthiban Nallathambi pn@denx.de Reviewed-by: Nuno Sá nuno.sa@analog.com Link: https://lore.kernel.org/r/20210613152301.571002-8-jic23@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/light/vcnl4035.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/light/vcnl4035.c b/drivers/iio/light/vcnl4035.c index cca4db312bd3..234623ab3817 100644 --- a/drivers/iio/light/vcnl4035.c +++ b/drivers/iio/light/vcnl4035.c @@ -102,7 +102,8 @@ static irqreturn_t vcnl4035_trigger_consumer_handler(int irq, void *p) struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->indio_dev; struct vcnl4035_data *data = iio_priv(indio_dev); - u8 buffer[ALIGN(sizeof(u16), sizeof(s64)) + sizeof(s64)]; + /* Ensure naturally aligned timestamp */ + u8 buffer[ALIGN(sizeof(u16), sizeof(s64)) + sizeof(s64)] __aligned(8); int ret;
ret = regmap_read(data->regmap, VCNL4035_ALS_DATA, (int *)buffer);