linux-kernel - Re: [PATCH 07/34] Input: stmpe-ts - mark OF related data as maybe unused

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Date: Wed, 3 Apr 2024 11:52:12 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Andy Shevchenko <andriy.shevchenko@...el.com>,
 Arnd Bergmann <arnd@...nel.org>
Cc: linux-kernel@...r.kernel.org, Dmitry Torokhov
 <dmitry.torokhov@...il.com>, Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Arnd Bergmann <arnd@...db.de>,
 Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
 linux-input@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 07/34] Input: stmpe-ts - mark OF related data as maybe
 unused

On 03/04/2024 11:40, Andy Shevchenko wrote:
> On Wed, Apr 03, 2024 at 10:06:25AM +0200, Arnd Bergmann wrote:
>> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
>>
>> When compile tested with W=1 on x86_64 with driver as built-in:
>>
>>   stmpe-ts.c:371:34: error: unused variable 'stmpe_ts_ids' [-Werror,-Wunused-const-variable]
> 
> ...
> 
>> -static const struct of_device_id stmpe_ts_ids[] = {
>> +static const struct of_device_id stmpe_ts_ids[] __maybe_unused = {
> 
> __maybe_unused? 
> 
> Why not adding it into .driver as you have done in another patch in this series?

Because there is no benefit in this. This is instantiated by MFD, so the
only thing you need is entry for module loading.

Best regards,
Krzysztof