Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Jonathan Cameron <Jonathan.Cameron@huawei.com>,
        =?UTF-8?q?Nuno=20S=C3=A1?= <nuno.sa@analog.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.18 0637/1095] iio: dac: ad5766: Fix alignment for DMA safety
Date:   Mon, 15 Aug 2022 20:00:36 +0200
Message-Id: <20220815180455.770895356@linuxfoundation.org>
In-Reply-To: <20220815180429.240518113@linuxfoundation.org>
References: <20220815180429.240518113@linuxfoundation.org>
User-Agent: quilt/0.67
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

[ Upstream commit c32be7f035ae430ba9c142b03ceb9f935b09ed6b ]

____cacheline_aligned is an insufficient guarantee for non-coherent DMA
on platforms with 128 byte cachelines above L1.  Switch to the updated
IIO_DMA_MINALIGN definition.

Fixes: fd9373e41b9b ("iio: dac: ad5766: add driver support for AD5766")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220508175712.647246-54-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iio/dac/ad5766.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/dac/ad5766.c b/drivers/iio/dac/ad5766.c
index 43189af2fb1f..899894523752 100644
--- a/drivers/iio/dac/ad5766.c
+++ b/drivers/iio/dac/ad5766.c
@@ -123,7 +123,7 @@ struct ad5766_state {
 		u32	d32;
 		u16	w16[2];
 		u8	b8[4];
-	} data[3] ____cacheline_aligned;
+	} data[3] __aligned(IIO_DMA_MINALIGN);
 };
 
 struct ad5766_span_tbl {
-- 
2.35.1