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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Vasileios Amoiridis <vassilisamir@gmail.com>
Cc: jic23@kernel.org, lars@metafoo.de, ang.iglesiasg@gmail.com,
	mazziesaccount@gmail.com, ak@it-klinger.de,
	petre.rodan@subdimension.ro, phil@raspberrypi.com,
	579lpy@gmail.com, linux-iio@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/4] iio: pressure: Add triggered buffer support for BMP280 driver
Date: Mon, 4 Mar 2024 21:18:27 +0200	[thread overview]
Message-ID: <ZeYegxEF521ixMTs@smile.fi.intel.com> (raw)
In-Reply-To: <20240304190838.GA4431@vamoiridPC>

On Mon, Mar 04, 2024 at 08:08:38PM +0100, Vasileios Amoiridis wrote:
> On Mon, Mar 04, 2024 at 01:52:05PM +0200, Andy Shevchenko wrote:
> > On Sun, Mar 03, 2024 at 05:53:00PM +0100, Vasileios Amoiridis wrote:

...

> > > +	struct {
> > > +		s32 temperature;
> > > +		u32 pressure;
> > > +		u32 humidity;
> > 
> > > +		s64 timestamp;
> > 
> > Shouldn't this be aligned properly?
> 
> I saw that in some drivers it was added and in some it was not. What is the
> difference of aligning just the timestamp of the kernel?

You can count yourself. With provided structure as above there is a high
probability of misaligned timeout field. The latter has to be aligned on
8 bytes.

> > > +	} iio_buffer;

-- 
With Best Regards,
Andy Shevchenko



  reply	other threads:[~2024-03-04 19:18 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-03 16:52 [PATCH 0/4] Series to add triggered buffer support to BMP280 driver Vasileios Amoiridis
2024-03-03 16:52 ` [PATCH 1/4] iio: pressure: BMP280 core driver headers sorting Vasileios Amoiridis
2024-03-04 11:36   ` Andy Shevchenko
2024-03-09 18:09   ` Jonathan Cameron
2024-03-03 16:52 ` [PATCH 2/4] iio: pressure: Add scale value for channels Vasileios Amoiridis
2024-03-04 11:42   ` Andy Shevchenko
2024-03-09 18:28   ` Jonathan Cameron
2024-03-03 16:52 ` [PATCH 3/4] iio: pressure: Add timestamp and scan_masks for BMP280 driver Vasileios Amoiridis
2024-03-04 11:47   ` Andy Shevchenko
2024-03-04 18:50     ` Vasileios Amoiridis
2024-03-04 19:07       ` Andy Shevchenko
2024-03-09 18:12         ` Jonathan Cameron
2024-03-03 16:53 ` [PATCH 4/4] iio: pressure: Add triggered buffer support " Vasileios Amoiridis
2024-03-04 11:52   ` Andy Shevchenko
2024-03-04 19:08     ` Vasileios Amoiridis
2024-03-04 19:18       ` Andy Shevchenko [this message]
2024-03-04 20:05         ` Vasileios Amoiridis
2024-03-09 18:19           ` Jonathan Cameron
2024-03-09 18:32   ` Jonathan Cameron

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