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[RESEND,5/8] iio: magn: rm3100: Fix alignment of buffer in iio_push_to_buffers_with_timestamp()

Message ID 20210613152301.571002-6-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.

Here an explicit structure is not used, because this buffer is used in
a non-trivial way for data repacking.

Fixes: 121354b2eceb ("iio: magnetometer: Add driver support for PNI RM3100")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Song Qiang <songqiang1304521@gmail.com>
---
 drivers/iio/magnetometer/rm3100-core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/iio/magnetometer/rm3100-core.c b/drivers/iio/magnetometer/rm3100-core.c
index 4df5887fd04c..13914273c999 100644
--- a/drivers/iio/magnetometer/rm3100-core.c
+++ b/drivers/iio/magnetometer/rm3100-core.c
@@ -78,7 +78,8 @@  struct rm3100_data {
 	bool use_interrupt;
 	int conversion_time;
 	int scale;
-	u8 buffer[RM3100_SCAN_BYTES];
+	/* Ensure naturally aligned timestamp */
+	u8 buffer[RM3100_SCAN_BYTES] __aligned(8);
 	struct iio_trigger *drdy_trig;
 
 	/*