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[RESEND,4/8] iio: adc: ti-ads8688: Fix alignment of buffer in iio_push_to_buffers_with_timestamp()

Message ID 20210613152301.571002-5-jic23@kernel.org (mailing list archive)
State Accepted
Headers show
Series IIO: Alignment fixes part 3 - __aligned(8) used to ensure alignment | expand

Commit Message

Jonathan Cameron June 13, 2021, 3:22 p.m. UTC 
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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.

Fixes: f214ff521fb1 ("iio: ti-ads8688: Update buffer allocation for timestamps")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/iio/adc/ti-ads8688.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/iio/adc/ti-ads8688.c b/drivers/iio/adc/ti-ads8688.c
index 16bcb37eebb7..79c803537dc4 100644
--- a/drivers/iio/adc/ti-ads8688.c
+++ b/drivers/iio/adc/ti-ads8688.c
@@ -383,7 +383,8 @@  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[ADS8688_MAX_CHANNELS + sizeof(s64)/sizeof(u16)];
+	/* Ensure naturally aligned timestamp */
+	u16 buffer[ADS8688_MAX_CHANNELS + sizeof(s64)/sizeof(u16)] __aligned(8);
 	int i, j = 0;
 
 	for (i = 0; i < indio_dev->masklength; i++) {