Re: [PATCH v17 2/4] dmaengine: tegra: Add tegra gpcdma driver

Dmitry Osipenko
2022-01-30T10:08:49Z

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);