Hi Wei Yongjun,
Thank you for the patch.
> Subject: [PATCH -next] media: rcar_drif: fix error return code in
> rcar_drif_alloc_dmachannels()
>
> Fix to return error code -ENODEV from the dma_request_slave_channel()
> error handling case instead of 0, as done elsewhere in this function.
> rc can be overwrite to 0 by dmaengine_slave_config() in the for loop.
>
> Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
Reviewed-by: Ramesh Shanmugasundaram <ramesh.shanmugasunda...@bp.renesas.com>
Thanks,
Ramesh
> ---
> drivers/media/platform/rcar_drif.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/rcar_drif.c
> b/drivers/media/platform/rcar_drif.c
> index b2e080e..dc7e280 100644
> --- a/drivers/media/platform/rcar_drif.c
> +++ b/drivers/media/platform/rcar_drif.c
> @@ -274,7 +274,7 @@ static int rcar_drif_alloc_dmachannels(struct
> rcar_drif_sdr *sdr) {
> struct dma_slave_config dma_cfg;
> unsigned int i;
> - int ret = -ENODEV;
> + int ret;
>
> for_each_rcar_drif_channel(i, &sdr->cur_ch_mask) {
> struct rcar_drif *ch = sdr->ch[i];
> @@ -282,6 +282,7 @@ static int rcar_drif_alloc_dmachannels(struct
> rcar_drif_sdr *sdr)
> ch->dmach = dma_request_slave_channel(&ch->pdev->dev, "rx");
> if (!ch->dmach) {
> rdrif_err(sdr, "ch%u: dma channel req failed\n", i);
> + ret = -ENODEV;
> goto dmach_error;
> }
