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SubjectRe: [PATCH v8 11/19] dmaengine: tegra-apb: Remove duplicated pending_sg_req checks
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On 09/02/2020 16:33, Dmitry Osipenko wrote:
> There are few place in the code which check whether pending_sg_req list is
> empty despite of the check already being done. Let's remove the duplicated
> checks to keep code clean.
>
> Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
> ---
> drivers/dma/tegra20-apb-dma.c | 12 ------------
> 1 file changed, 12 deletions(-)
>
> diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
> index 22b88ccff05d..049e98ae1240 100644
> --- a/drivers/dma/tegra20-apb-dma.c
> +++ b/drivers/dma/tegra20-apb-dma.c
> @@ -504,9 +504,6 @@ static void tdc_start_head_req(struct tegra_dma_channel *tdc)
> {
> struct tegra_dma_sg_req *sg_req;
>
> - if (list_empty(&tdc->pending_sg_req))
> - return;
> -
> sg_req = list_first_entry(&tdc->pending_sg_req, typeof(*sg_req), node);
> tegra_dma_start(tdc, sg_req);
> sg_req->configured = true;
> @@ -518,9 +515,6 @@ static void tdc_configure_next_head_desc(struct tegra_dma_channel *tdc)
> {
> struct tegra_dma_sg_req *hsgreq, *hnsgreq;
>
> - if (list_empty(&tdc->pending_sg_req))
> - return;
> -
> hsgreq = list_first_entry(&tdc->pending_sg_req, typeof(*hsgreq), node);
> if (!list_is_last(&hsgreq->node, &tdc->pending_sg_req)) {
> hnsgreq = list_first_entry(&hsgreq->node, typeof(*hnsgreq),
> @@ -567,12 +561,6 @@ static bool handle_continuous_head_request(struct tegra_dma_channel *tdc,
> {
> struct tegra_dma_sg_req *hsgreq;
>
> - if (list_empty(&tdc->pending_sg_req)) {
> - dev_err(tdc2dev(tdc), "DMA is running without req\n");
> - tegra_dma_stop(tdc);
> - return false;
> - }
> -
> /*
> * Check that head req on list should be in flight.
> * If it is not in flight then abort transfer as
>

Acked-by: Jon Hunter <jonathanh@nvidia.com>

Thanks
Jon

--
nvpublic

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