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    Subject[4.4-stable 16/22] dmaengine: zx: fix build warning
    Date
    From: Jun Nie <jun.nie@linaro.org>

    commit 067fdeb2f391bfa071f741a2b3eb74b8ff3785cd upstream.

    Fix build warning that related to PAGE_SIZE. The maximum DMA
    length has nothing to do with PAGE_SIZE, just use a fix number
    for the definition.

    drivers/dma/zx_dma.c: In function 'zx_dma_prep_memcpy':
    drivers/dma/zx_dma.c:523:8: warning: division by zero [-Wdiv-by-zero]
    drivers/dma/zx_dma.c: In function 'zx_dma_prep_slave_sg':
    drivers/dma/zx_dma.c:567:11: warning: division by zero [-Wdiv-by-zero]

    Signed-off-by: Jun Nie <jun.nie@linaro.org>
    Tested-by: Shawn Guo <shawn.guo@linaro.org>
    Signed-off-by: Vinod Koul <vinod.koul@intel.com>
    [arnd: rebased to 4.4-stable]
    Signed-off-by: Arnd Bergmann <arnd@arndb.de>
    ---
    drivers/dma/zx296702_dma.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/drivers/dma/zx296702_dma.c b/drivers/dma/zx296702_dma.c
    index 6059d81e701a..8e55403847b2 100644
    --- a/drivers/dma/zx296702_dma.c
    +++ b/drivers/dma/zx296702_dma.c
    @@ -26,7 +26,7 @@

    #define DRIVER_NAME "zx-dma"
    #define DMA_ALIGN 4
    -#define DMA_MAX_SIZE (0x10000 - PAGE_SIZE)
    +#define DMA_MAX_SIZE (0x10000 - 512)
    #define LLI_BLOCK_SIZE (4 * PAGE_SIZE)

    #define REG_ZX_SRC_ADDR 0x00
    --
    2.9.0
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