linux-kernel - Re: linux-next: build warning after merge of the slave-dma tree

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Date:   Fri, 14 Feb 2020 10:11:12 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: Re: linux-next: build warning after merge of the slave-dma tree

Hello Stephen,

On 14-02-20, 11:00, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the slave-dma tree, today's linux-next build (arm
> multi_v7_defconfig) produced this warning:
> 
> drivers/dma/sun4i-dma.c: In function 'sun4i_dma_prep_dma_cyclic':
> drivers/dma/sun4i-dma.c:30:51: warning: statement with no effect [-Wunused-value]
>    30 | #define SUN4I_DMA_CFG_SRC_ADDR_MODE(mode) ((mode) << 5)
>       |                                           ~~~~~~~~^~~~~
> drivers/dma/sun4i-dma.c:701:8: note: in expansion of macro 'SUN4I_DMA_CFG_SRC_ADDR_MODE'
>   701 |        SUN4I_DMA_CFG_SRC_ADDR_MODE(linear_mode);
>       |        ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> Introduced by commit
> 
>   6ebb827f7aad ("dmaengine: sun4i: use 'linear_mode' in sun4i_dma_prep_dma_cyclic")

Thanks for the report, I confirm this and the fix is on the way :)

> Please do not ignore/dismiss new warnings ... this one points out a real issue.

Sure!

-- 
~Vinod