linux-kernel - Re: [PATCH] dmaengine: shdmac: avoid unused variable warnings

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Message-ID: <20150417181542.GL30624@intel.com>
Date:	Fri, 17 Apr 2015 23:45:42 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Dan Williams <dan.j.williams@...el.com>,
	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
	dmaengine@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dmaengine: shdmac: avoid unused variable warnings

On Sat, Apr 11, 2015 at 12:27:58AM +0200, Arnd Bergmann wrote:
> This driver uses '#ifdef CONFIG_ARCH_SHMOBILE' and '#ifdef CONFIG_ARM'
> interchangeably in its sh_dmae_probe function, which causes a build
> warning when building for ARM without also enabling shmobile:
> 
> dma/sh/shdmac.c: In function sh_dmae_probe:
> dma/sh/shdmac.c:696:6: warning: unused variable errirq [-Wunused-variable]
> dma/sh/shdmac.c:695:16: warning: unused variable irqflags [-Wunused-variable]
> dma/sh/shdmac.c: At top level:
> dma/sh/shdmac.c:447:20: warning: sh_dmae_err defined but not used [-Wunused-function]
> 
> This changes all the #ifdef to test for CONFIG_ARCH_SHMOBILE to
> avoid that warning. An earlier patch from Laurent had fixed the warning
> for non-ARM case, but it still remained present in ARM randconfig builds.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: 52d6a5ee101bf ("DMA: shdma: Fix warnings due to declared but unused symbols")
Applied, thanks

-- 
~Vinod

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