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[02/11] iio: adc: hx711: Fix buffer alignment in iio_push_to_buffers_with_timestamp()

Message ID 20210501171352.512953-3-jic23@kernel.org (mailing list archive)
State New, archived
Headers show
Series IIO: Alignment fixes part 3 - __aligned(8) used to ensure alignment | expand

Commit Message

Jonathan Cameron May 1, 2021, 5:13 p.m. UTC 
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of this function.

Fixes: d3bf60450d47 ("iio: hx711: add triggered buffer support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Andreas Klinger <ak@it-klinger.de>
---
 drivers/iio/adc/hx711.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/iio/adc/hx711.c b/drivers/iio/adc/hx711.c
index 6a173531d355..f7ee856a6b8b 100644
--- a/drivers/iio/adc/hx711.c
+++ b/drivers/iio/adc/hx711.c
@@ -86,9 +86,9 @@  struct hx711_data {
 	struct mutex		lock;
 	/*
 	 * triggered buffer
-	 * 2x32-bit channel + 64-bit timestamp
+	 * 2x32-bit channel + 64-bit naturally aligned timestamp
 	 */
-	u32			buffer[4];
+	u32			buffer[4] __aligned(8);
 	/*
 	 * delay after a rising edge on SCK until the data is ready DOUT
 	 * this is dependent on the hx711 where the datasheet tells a