linux-kernel - Re: [PATCH] dma: coh901318: fix function return types build warnings

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Message-ID: <20150118143226.GQ15411@intel.com>
Date:	Sun, 18 Jan 2015 20:02:26 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	dmaengine@...r.kernel.org,
	Linus Walleij <linus.walleij@...aro.org>,
	Dan Williams <dan.j.williams@...el.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: Re: [PATCH] dma: coh901318: fix function return types build warnings

On Tue, Jan 13, 2015 at 10:17:03PM +0100, Arnd Bergmann wrote:
> A recent patch that removed coh901318_control() replaced it
> with a number of pointers to existing functions, but those
> unfortunately have the wrong return  type and need to be
> changed to return an 'int' with an error value rather than
> a 'void' to avoid these build warnings:
> 
> drivers/dma/coh901318.c:2697:32: warning: assignment from incompatible pointer type
>   base->dma_slave.device_config = coh901318_dma_set_runtimeconfig;
>                                 ^
> drivers/dma/coh901318.c:2698:31: warning: assignment from incompatible pointer type
>   base->dma_slave.device_pause = coh901318_pause;
>                                ^
> drivers/dma/coh901318.c:2699:32: warning: assignment from incompatible pointer type
>   base->dma_slave.device_resume = coh901318_resume
> 
> The coh901318_base_init function has the correct return type
> already, but needs to be marked 'static' to avoid a sparse
> warning about a missing declaration.
> 
Please use the right subsystem name

Applied now

Thanks
-- 
~Vinod

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