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

From: Appana Durga Kedareswara Rao
Date: Thu Jun 09 2016 - 02:04:14 EST


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.