linux-kernel - Re: [PATCH] i2c: gxp: fix build failure without CONFIG_I2C

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Date:   Wed, 3 May 2023 17:23:29 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Jean-Marie Verdun <verdun@....com>,
        Nick Hawkins <nick.hawkins@....com>,
        Joel Stanley <joel@....id.au>, Arnd Bergmann <arnd@...db.de>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: gxp: fix build failure without CONFIG_I2C_SLAVE

On Mon, Apr 03, 2023 at 09:49:13AM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> The gxp_i2c_slave_irq_handler() is hidden in an #ifdef, but the
> caller uses an IS_ENABLED() check:
> 
> drivers/i2c/busses/i2c-gxp.c: In function 'gxp_i2c_irq_handler':
> drivers/i2c/busses/i2c-gxp.c:467:29: error: implicit declaration of function 'gxp_i2c_slave_irq_handler'; did you mean 'gxp_i2c_irq_handler'? [-Werror=implicit-function-declaration]
> 
> It has to consistently use one method or the other to avoid warnings,
> so move to IS_ENABLED() here for readability and build coverage, and
> move the #ifdef in linux/i2c.h to allow building it as dead code.
> 
> Fixes: 4a55ed6f89f5 ("i2c: Add GXP SoC I2C Controller")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Applied to for-current, thanks!


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