linux-kernel - Re: [PATCH] iio: temperature: maxim_thermocouple: use IIO_DECLARE_DMA_BUFFER_WITH

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Message-ID: <4d41eafc-46b1-48c7-982a-1a3566f9b423@baylibre.com>
Date: Fri, 11 Jul 2025 13:38:17 -0500
From: David Lechner <dlechner@...libre.com>
To: Andy Shevchenko <andriy.shevchenko@...el.com>
Cc: Jonathan Cameron <jic23@...nel.org>, Nuno Sá
 <nuno.sa@...log.com>, Andy Shevchenko <andy@...nel.org>,
 linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iio: temperature: maxim_thermocouple: use
 IIO_DECLARE_DMA_BUFFER_WITH_TS()

On 7/11/25 12:50 PM, Andy Shevchenko wrote:
> On Fri, Jul 11, 2025 at 12:04:03PM -0500, David Lechner wrote:
>> On 7/11/25 11:41 AM, Andy Shevchenko wrote:
>>> On Fri, Jul 11, 2025 at 10:33:55AM -0500, David Lechner wrote:
> 
> ...
> 
>>>> +#include <asm/byteorder.h>
>>>
>>> Hmm... I see nothing about this change in the commit message.
>>
>> It is for __be16. I kind of assumed that would be obvious, but sure,
>> better to be explicit about it.
> 
> Isn't it in types.h?
> 

No, only CPU-endian types are in types.h. The actual #define for
 __be16 is in include/uapi/linux/byteorder/big_endian.h. This is
included in one driver in staging, otherwise it is only included
in arch/*/include/uapi/asm/byteorder.h. And asm/byteorder.h is what
Jonathan used for similar in some of his recent IWYU patches as well,
so I assume that is the preferred way to do it.