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Fri, 18 Apr 2025 09:17:41 -0700 (PDT) From: David Lechner Date: Fri, 18 Apr 2025 11:17:13 -0500 Subject: [PATCH v2 1/2] iio: imu: adis16550: align buffers for timestamp Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250418-iio-more-timestamp-alignment-v2-1-d6a5d2b1c9fe@baylibre.com> References: <20250418-iio-more-timestamp-alignment-v2-0-d6a5d2b1c9fe@baylibre.com> In-Reply-To: <20250418-iio-more-timestamp-alignment-v2-0-d6a5d2b1c9fe@baylibre.com> To: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Antoniu Miclaus , Ramona Gradinariu , Robert Budai , =?utf-8?q?Nuno_S=C3=A1?= , Andreas Klinger , Petre Rodan Cc: Jonathan Cameron , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, David Lechner X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=980; i=dlechner@baylibre.com; h=from:subject:message-id; bh=Ji2Bufzsf6DgjWf4BBNQD3G1VXMnmCGj6mWGvQqpC6c=; b=owEBbQGS/pANAwAKAcLMIAH/AY/AAcsmYgBoAnsUn+ARff5RlLSjf5RfdY2gi8ublq+tbyrEL 5nV5JOlTEWJATMEAAEKAB0WIQTsGNmeYg6D1pzYaJjCzCAB/wGPwAUCaAJ7FAAKCRDCzCAB/wGP wH92B/42FlsLkWxKApYyrIMJuVdxLFtZ78J6pzL4P+rXHmqEOSiL9eAYiplsxPTvqSvJNT1/BFu YZEuSLECihsYpNtqmKCabfw6N2Cp0iXcrngukUWLjkNClBfpAzaUgareHgyOxBM5WUBShJ/l1y3 rd8xYed07q1bKQfjfIi2AUSs7mu4NOk29cIlxkIMmWw3r4zScL1M8kT42JMbCITU2bAUkWSZUgM Z2+WPCof6mLnRhWhZ1N0bvYFT6jzEleKG+xf+QotSM62569wAZUNryQZBqcrryfajIL1nmQ13Kc f8w/wiRlFiW4ywldzntwreV69I90wDr2rJ7SO0tJV6++PEwz X-Developer-Key: i=dlechner@baylibre.com; a=openpgp; fpr=8A73D82A6A1F509907F373881F8AF88C82F77C03 Align the buffers used with iio_push_to_buffers_with_timestamp() to ensure the s64 timestamp is aligned to 8 bytes. Fixes: bac4368fab62 ("iio: imu: adis16550: add adis16550 support") Signed-off-by: David Lechner --- drivers/iio/imu/adis16550.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/imu/adis16550.c b/drivers/iio/imu/adis16550.c index b14ea8937c7f5a2123e4097dc5b8260492044d1b..28f0dbd0226cbea67bc6c87d892= f7812f21e9304 100644 --- a/drivers/iio/imu/adis16550.c +++ b/drivers/iio/imu/adis16550.c @@ -836,7 +836,7 @@ static irqreturn_t adis16550_trigger_handler(int irq, v= oid *p) u16 dummy; bool valid; struct iio_poll_func *pf =3D p; - __be32 data[ADIS16550_MAX_SCAN_DATA]; + __be32 data[ADIS16550_MAX_SCAN_DATA] __aligned(8); struct iio_dev *indio_dev =3D pf->indio_dev; struct adis16550 *st =3D iio_priv(indio_dev); struct adis *adis =3D iio_device_get_drvdata(indio_dev); --=20 2.43.0 From nobody Sun Dec 14 12:16:58 2025 Received: from mail-oi1-f174.google.com (mail-oi1-f174.google.com [209.85.167.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3E8BC224AE8 for ; 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Fri, 18 Apr 2025 09:17:44 -0700 (PDT) Received: from [127.0.1.1] ([2600:8803:e7e4:1d00:dcdf:46e0:18e5:c279]) by smtp.gmail.com with ESMTPSA id 5614622812f47-401beeffe05sm384929b6e.30.2025.04.18.09.17.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Apr 2025 09:17:43 -0700 (PDT) From: David Lechner Date: Fri, 18 Apr 2025 11:17:14 -0500 Subject: [PATCH v2 2/2] iio: pressure: mprls0025pa: use aligned_s64 for timestamp Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250418-iio-more-timestamp-alignment-v2-2-d6a5d2b1c9fe@baylibre.com> References: <20250418-iio-more-timestamp-alignment-v2-0-d6a5d2b1c9fe@baylibre.com> In-Reply-To: <20250418-iio-more-timestamp-alignment-v2-0-d6a5d2b1c9fe@baylibre.com> To: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Antoniu Miclaus , Ramona Gradinariu , Robert Budai , =?utf-8?q?Nuno_S=C3=A1?= , Andreas Klinger , Petre Rodan Cc: Jonathan Cameron , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, David Lechner X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; 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This will ensure the struct itself it also 8-byte aligned. While touching this, convert struct mpr_chan to an anonymous struct to consolidate the code a bit to make it easier for future readers. Fixes: 713337d9143e ("iio: pressure: Honeywell mprls0025pa pressure sensor") Signed-off-by: David Lechner --- I didn't pick up review tags on this one since removing the struct definition is a biggish change compared to v1. --- drivers/iio/pressure/mprls0025pa.h | 17 ++++++----------- 1 file changed, 6 insertions(+), 11 deletions(-) diff --git a/drivers/iio/pressure/mprls0025pa.h b/drivers/iio/pressure/mprl= s0025pa.h index 9d5c30afa9d69a6a606662aa7906a76347329cef..d62a018eaff32bdd0dab046057f= cd9d60befa3ac 100644 --- a/drivers/iio/pressure/mprls0025pa.h +++ b/drivers/iio/pressure/mprls0025pa.h @@ -34,16 +34,6 @@ struct iio_dev; struct mpr_data; struct mpr_ops; =20 -/** - * struct mpr_chan - * @pres: pressure value - * @ts: timestamp - */ -struct mpr_chan { - s32 pres; - s64 ts; -}; - enum mpr_func_id { MPR_FUNCTION_A, MPR_FUNCTION_B, @@ -69,6 +59,8 @@ enum mpr_func_id { * reading in a loop until data is ready * @completion: handshake from irq to read * @chan: channel values for buffered mode + * @chan.pres: pressure value + * @chan.ts: timestamp * @buffer: raw conversion data */ struct mpr_data { @@ -87,7 +79,10 @@ struct mpr_data { struct gpio_desc *gpiod_reset; int irq; struct completion completion; - struct mpr_chan chan; + struct { + s32 pres; + aligned_s64 ts; + } chan; u8 buffer[MPR_MEASUREMENT_RD_SIZE] __aligned(IIO_DMA_MINALIGN); }; =20 --=20 2.43.0