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

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Message-ID: <C246CAC1457055469EF09E3A7AC4E11A4A5B5325@XAP-PVEXMBX01.xlnx.xilinx.com>
Date:	Thu, 9 Jun 2016 06:04:03 +0000
From:	Appana Durga Kedareswara Rao <appana.durga.rao@...inx.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>,
	Vinod Koul <vinod.koul@...el.com>
CC:	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: linux-next: build warning after merge of the slave-dma tree

Hi Stephen Rothwell,


> Hi Vinod,
> 
> After merging the slave-dma tree, today's linux-next build (arm
> multi_v7_defconfig) produced this warning:
> 
> drivers/dma/xilinx/xilinx_vdma.c: In function 'xilinx_dma_prep_dma_cyclic':
> drivers/dma/xilinx/xilinx_vdma.c:1808:23: warning: 'segment' may be used
> uninitialized in this function [-Wmaybe-uninitialized]
>    segment->hw.control |= XILINX_DMA_BD_SOP;

Thanks for reporting the issue.
I have fixed it and sent the patch...

> 
> Introduced by commit
> 
>   92d794dfb699 ("dmaengine: vdma: Add support for cyclic dma mode")
> 
> I am not sure if this is tecnically a problem, but gcc certainly cannot tell.

Thanks,
Kedar.