Hi All,
Oops. I would like to drop this patch as 2^32 − 1 = 'U32_MAX'.
Sorry for the noise.
Regards,
Biju
> Subject: [PATCH 2/2] dmaengine: sh: rz-dmac: Fix dma_set_max_seg_size
>
> As per Hardware manual, maximum transfer count is 2^32 − 1 bytes.
> This patch fixes this issue by replacing 'U32_MAX'->'U32_MAX - 1'.
>
> Fixes: 5000d37042a61ca55 ("dmaengine: sh: Add DMAC driver for RZ/G2L SoC")
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> ---
> drivers/dma/sh/rz-dmac.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c index
> 52d82f67d3dd..b35bea56e475 100644
> --- a/drivers/dma/sh/rz-dmac.c
> +++ b/drivers/dma/sh/rz-dmac.c
> @@ -913,7 +913,7 @@ static int rz_dmac_probe(struct platform_device *pdev)
> engine->device_issue_pending = rz_dmac_issue_pending;
>
> engine->copy_align = DMAENGINE_ALIGN_1_BYTE;
> - dma_set_max_seg_size(engine->dev, U32_MAX);
> + dma_set_max_seg_size(engine->dev, U32_MAX - 1);
>
> ret = dma_async_device_register(engine);
> if (ret < 0) {
> --
> 2.17.1
