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Date:   Fri, 14 Feb 2020 11:00:39 +1100
From:   Stephen Rothwell <>
To:     Vinod Koul <>
Cc:     Linux Next Mailing List <>,
        Linux Kernel Mailing List <>,
        YueHaibing <>
Subject: linux-next: build warning after merge of the slave-dma tree

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")

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

Stephen Rothwell

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