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Date: Sun, 30 Jan 2022 13:08:43 +0300 From: Dmitry Osipenko <digetx@...il.com> To: Akhil R <akhilrajeev@...dia.com>, devicetree@...r.kernel.org, dmaengine@...r.kernel.org, jonathanh@...dia.com, kyarlagadda@...dia.com, ldewangan@...dia.com, linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org, p.zabel@...gutronix.de, rgumasta@...dia.com, robh+dt@...nel.org, thierry.reding@...il.com, vkoul@...nel.org Cc: Pavan Kunapuli <pkunapuli@...dia.com> Subject: Re: [PATCH v17 2/4] dmaengine: tegra: Add tegra gpcdma driver 30.01.2022 13:05, Dmitry Osipenko пишет: > static int tegra_dma_device_resume(struct dma_chan *dc) > { > struct tegra_dma_channel *tdc = to_tegra_dma_chan(dc); > u32 val; > > if (!tdc->tdma->chip_data->hw_support_pause) > return -ENOSYS; > > if (!tdc->dma_desc) > return 0; > > val = tdc_read(tdc, TEGRA_GPCDMA_CHAN_CSRE); > val &= ~TEGRA_GPCDMA_CHAN_CSRE_PAUSE; > tdc_write(tdc, TEGRA_GPCDMA_CHAN_CSRE, val); > > enable_irq(tdc->irq); Correction: if (tdc->dma_desc) { val = tdc_read(tdc, TEGRA_GPCDMA_CHAN_CSRE); val &= ~TEGRA_GPCDMA_CHAN_CSRE_PAUSE; tdc_write(tdc, TEGRA_GPCDMA_CHAN_CSRE, val); } enable_irq(tdc->irq);
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