From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: David Lechner <dlechner@baylibre.com>
Cc: "Jonathan Cameron" <jic23@kernel.org>,
"Nuno Sá" <nuno.sa@analog.com>,
"Andy Shevchenko" <andy@kernel.org>,
"Jiri Kosina" <jikos@kernel.org>,
"Srinivas Pandruvada" <srinivas.pandruvada@linux.intel.com>,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
"Jonathan Cameron" <Jonathan.Cameron@huawei.com>,
linux-input@vger.kernel.org, "Lixu Zhang" <lixu.zhang@intel.com>
Subject: Re: [PATCH 0/2] iio: orientation: hid-sensor-rotation: fix quaternion alignment
Date: Mon, 16 Feb 2026 09:44:11 +0200 [thread overview]
Message-ID: <aZLKy4l6OlPgIkZx@smile.fi.intel.com> (raw)
In-Reply-To: <20260214-iio-fix-repeat-alignment-v1-0-47f01288c803@baylibre.com>
On Sat, Feb 14, 2026 at 03:00:19PM -0600, David Lechner wrote:
> The main point of this series is to fix a regression reported in
> hid-sensor-rotation where the alignment of the quaternion field in the
> data was inadvertently changed from 16 bytes to 8 bytes. This is an
> unusually case (one of only 2 in the kernel) where the .repeat field of
> struct iio_scan_type is used and we have such a requirement. (The other
> case uses u16 instead of u32, so it wasn't affected.)
>
> To make the reason for the alignment more explicit to future readers,
> we introduce a new macro, IIO_DECLARE_REPEATED_ELEMENT, to declare the
> array with proper allignment. This is meant to follow the pattern of
> the similar IIO_DECLARE_BUFFER_WITH_TS() macro.
In both cases it's quaternion, maybe be more explicit and define
IIO_DECLARE_QUATERNION() ?
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2026-02-16 7:44 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-14 21:00 [PATCH 0/2] iio: orientation: hid-sensor-rotation: fix quaternion alignment David Lechner
2026-02-14 21:00 ` [PATCH 1/2] iio: add IIO_DECLARE_REPEATED_ELEMENT() macro David Lechner
2026-02-14 21:00 ` [PATCH 2/2] iio: orientation: hid-sensor-rotation: fix quaternion alignment David Lechner
2026-02-16 7:45 ` Andy Shevchenko
2026-02-24 2:35 ` Zhang, Lixu
2026-02-16 7:44 ` Andy Shevchenko [this message]
2026-02-16 15:25 ` [PATCH 0/2] " David Lechner
2026-02-17 8:10 ` Andy Shevchenko
2026-02-18 19:52 ` Jonathan Cameron
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