From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 99AE743157 for ; Wed, 14 Feb 2024 15:26:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707924386; cv=none; b=XM9z++b2v4mKGi9IQzc/OMhak4CZkQXMi4BvwHReRALrr2AUm//skgCwZoJpAck//mmQ3gO3quBNhbs6BE8yO2telIBMMMrk/lDN0X5odQj1ftjFemZSL0S3LZSzuqvcQJB5mPpzWbAxkb3L/lfOL6TFQVnLEK6vFVb0H7GgXT4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707924386; c=relaxed/simple; bh=p59L3R+ZkRrDWknJak2fEEY4lAonxV1kmMiWSZZ+eFU=; h=Subject:To:From:Date:Message-ID:MIME-Version:Content-Type; b=MFMGZZqTDajcJI5Vv+zf1q9+LA+/mo84VizeWXzbGsgist/ON102I0DykIfiWiDtvfR/Jp3ZsOy3b5r5ovPoeFg4XVNEKwdHthl22Vosp8ISo08FPhObcKJvLWSse08kapMvGP8LN+Ocgk7YWaHkLRV4x4x9h8nbQh5kB03eR2M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=y5XltpUU; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="y5XltpUU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB89BC433F1; Wed, 14 Feb 2024 15:26:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1707924386; bh=p59L3R+ZkRrDWknJak2fEEY4lAonxV1kmMiWSZZ+eFU=; h=Subject:To:From:Date:From; b=y5XltpUU33vkVHOCWX92Fiw9nCBZQAjEy7I91wPGGfkwHKgwPVFAmdFnfW3A511YY 4NjNf1oaQFjYE0sh9fcUW2vOZCtw3vIK6YoNWX08LU3qS3RwnsxJpUxTiYHOsS+DV4 Qrb+Ug2IRSTXehd465a8End7clI4UJC7dVWiD88s= Subject: patch "iio: imu: adis: ensure proper DMA alignment" added to char-misc-linus To: nuno.sa@analog.com,Jonathan.Cameron@huawei.com,Stable@vger.kernel.org From: Date: Wed, 14 Feb 2024 16:26:06 +0100 Message-ID: <2024021406-hypnoses-enjoyer-f063@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit This is a note to let you know that I've just added the patch titled iio: imu: adis: ensure proper DMA alignment to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 8e98b87f515d8c4bae521048a037b2cc431c3fd5 Mon Sep 17 00:00:00 2001 From: Nuno Sa Date: Wed, 17 Jan 2024 14:10:49 +0100 Subject: iio: imu: adis: ensure proper DMA alignment Aligning the buffer to the L1 cache is not sufficient in some platforms as they might have larger cacheline sizes for caches after L1 and thus, we can't guarantee DMA safety. That was the whole reason to introduce IIO_DMA_MINALIGN in [1]. Do the same for the sigma_delta ADCs. [1]: https://lore.kernel.org/linux-iio/20220508175712.647246-2-jic23@kernel.org/ Fixes: ccd2b52f4ac6 ("staging:iio: Add common ADIS library") Signed-off-by: Nuno Sa Link: https://lore.kernel.org/r/20240117-adis-improv-v1-1-7f90e9fad200@analog.com Cc: Signed-off-by: Jonathan Cameron --- include/linux/iio/imu/adis.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h index dc9ea299e088..8898966bc0f0 100644 --- a/include/linux/iio/imu/adis.h +++ b/include/linux/iio/imu/adis.h @@ -11,6 +11,7 @@ #include #include +#include #include #define ADIS_WRITE_REG(reg) ((0x80 | (reg))) @@ -131,7 +132,7 @@ struct adis { unsigned long irq_flag; void *buffer; - u8 tx[10] ____cacheline_aligned; + u8 tx[10] __aligned(IIO_DMA_MINALIGN); u8 rx[4]; }; -- 2.43.1