linux-kernel - [PATCH 7/8] iio: imu: inv_mpu6050: align buffer for timestamp

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Message-Id: <20250417-iio-more-timestamp-alignment-v1-7-eafac1e22318@baylibre.com>
Date: Thu, 17 Apr 2025 11:52:39 -0500
From: David Lechner <dlechner@...libre.com>
To: Jonathan Cameron <jic23@...nel.org>, 
 Nuno Sá <nuno.sa@...log.com>, 
 Andy Shevchenko <andy@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Lars-Peter Clausen <lars@...afoo.de>, 
 Michael Hennerich <Michael.Hennerich@...log.com>, 
 Cosmin Tanislav <cosmin.tanislav@...log.com>, 
 Tomasz Duszynski <tduszyns@...il.com>, 
 Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@....com>, 
 Andreas Klinger <ak@...klinger.de>, 
 Petre Rodan <petre.rodan@...dimension.ro>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, 
 David Lechner <dlechner@...libre.com>
Subject: [PATCH 7/8] iio: imu: inv_mpu6050: align buffer for timestamp

Align the buffer used with iio_push_to_buffers_with_timestamp() to
ensure the s64 timestamp is aligned to 8 bytes.

Signed-off-by: David Lechner <dlechner@...libre.com>
---
 drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
index 3d3b27f28c9d1c94aba93678261ce0d63099e1dc..273196e647a2b5a4860e18cfa34a088c773540e4 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
@@ -50,7 +50,7 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p)
 	u16 fifo_count;
 	u32 fifo_period;
 	s64 timestamp;
-	u8 data[INV_MPU6050_OUTPUT_DATA_SIZE];
+	u8 data[INV_MPU6050_OUTPUT_DATA_SIZE] __aligned(8);
 	size_t i, nb;
 
 	mutex_lock(&st->lock);

-- 
2.43.0