From: Jonathan Cameron <jic23@kernel.org>
To: linux-iio@vger.kernel.org
Cc: "Nuno Sá" <nuno.sa@analog.com>,
"Jonathan Cameron" <Jonathan.Cameron@huawei.com>,
"Rodrigo Siqueira" <rodrigosiqueiramelo@gmail.com>
Subject: [PATCH 3/4] staging: iio: meter: ade7854: Fix alignment for DMA safety
Date: Sun, 7 Aug 2022 16:12:17 +0100 [thread overview]
Message-ID: <20220807151218.656881-4-jic23@kernel.org> (raw)
In-Reply-To: <20220807151218.656881-1-jic23@kernel.org>
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
____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.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
---
drivers/staging/iio/meter/ade7854.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/iio/meter/ade7854.h b/drivers/staging/iio/meter/ade7854.h
index a51e6e3183d3..7a49f8f1016f 100644
--- a/drivers/staging/iio/meter/ade7854.h
+++ b/drivers/staging/iio/meter/ade7854.h
@@ -162,7 +162,7 @@ struct ade7854_state {
int bits);
int irq;
struct mutex buf_lock;
- u8 tx[ADE7854_MAX_TX] ____cacheline_aligned;
+ u8 tx[ADE7854_MAX_TX] __aligned(IIO_DMA_MINALIGN);
u8 rx[ADE7854_MAX_RX];
};
--
2.37.1
next prev parent reply other threads:[~2022-08-07 15:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-07 15:12 [PATCH 0/4] staging: iio: DMA alignment fixes Jonathan Cameron
2022-08-07 15:12 ` [PATCH 1/4] staging: iio: frequency: ad9832: Fix alignment for DMA safety Jonathan Cameron
2022-08-08 9:18 ` Andy Shevchenko
2022-08-08 14:14 ` Jonathan Cameron
2022-08-07 15:12 ` [PATCH 2/4] staging: iio: frequency: ad9834: " Jonathan Cameron
2022-08-07 15:12 ` Jonathan Cameron [this message]
2022-08-07 15:12 ` [PATCH 4/4] staging: iio: resolver: ad2s1210: " Jonathan Cameron
2022-08-08 9:20 ` [PATCH 0/4] staging: iio: DMA alignment fixes Andy Shevchenko
2022-08-13 16:01 ` Jonathan Cameron
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