From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Date: Sun, 13 Apr 2025 10:34:24 +0000 (+0100)
Subject: iio: adc: ad7266: Fix potential timestamp alignment issue.
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=52d349884738c346961e153f195f4c7fe186fcf4;p=users%2Fjedix%2Flinux-maple.git

iio: adc: ad7266: Fix potential timestamp alignment issue.

On architectures where an s64 is only 32-bit aligned insufficient padding
would be left between the earlier elements and the timestamp. Use
aligned_s64 to enforce the correct placement and ensure the storage is
large enough.

Fixes: 54e018da3141 ("iio:ad7266: Mark transfer buffer as __be16") # aligned_s64 is much newer.
Reported-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250413103443.2420727-2-jic23@kernel.org
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
index 18559757f9085..7fef2727f89e9 100644
--- a/drivers/iio/adc/ad7266.c
+++ b/drivers/iio/adc/ad7266.c
@@ -45,7 +45,7 @@ struct ad7266_state {
 	 */
 	struct {
 		__be16 sample[2];
-		s64 timestamp;
+		aligned_s64 timestamp;
 	} data __aligned(IIO_DMA_MINALIGN);
 };