Hi Vinod,
Thanks for reviewing.
On Tue, 30 Aug 2016, Vinod Koul wrote:
> On Fri, Aug 26, 2016 at 03:56:40PM +0100, Peter Griffin wrote:
>
> > config STM32_DMA
> > bool "STMicroelectronics STM32 DMA support"
> > depends on ARCH_STM32
> > @@ -567,7 +580,6 @@ config ZX_DMA
> > help
> > Support the DMA engine for ZTE ZX296702 platform devices.
> >
> > -
>
> unrelated change?
OK will remove and send a separate patch.
>
> > + fdev->chans = devm_kzalloc(&pdev->dev,
> > + fdev->nr_channels
> > + * sizeof(struct st_fdma_chan), GFP_KERNEL);
>
> devm_kcalloc()
Will fix in next version.
>
> > + if (!fdev->chans)
> > + return -ENOMEM;
> > +
> > + fdev->dev = &pdev->dev;
> > + fdev->drvdata = drvdata;
> > + platform_set_drvdata(pdev, fdev);
> > +
> > + fdev->irq = platform_get_irq(pdev, 0);
> > + if (fdev->irq < 0) {
> > + dev_err(&pdev->dev, "Failed to get irq resource\n");
> > + return -EINVAL;
> > + }
> > +
> > + ret = devm_request_irq(&pdev->dev, fdev->irq, st_fdma_irq_handler, 0,
> > + dev_name(&pdev->dev), fdev);
> > + if (ret) {
> > + dev_err(&pdev->dev, "Failed to request irq (%d)\n", ret);
> > + goto err;
> > + }
> > +
> > + fdev->slim_rproc = st_slim_rproc_alloc(pdev, fdev->fw_name);
> > + if (!fdev->slim_rproc) {
> > + ret = PTR_ERR(fdev->slim_rproc);
> > + dev_err(&pdev->dev, "slim_rproc_alloc failed (%d)\n", ret);
> > + goto err;
> > + }
> > +
> > + /* Initialise list of FDMA channels */
> > + INIT_LIST_HEAD(&fdev->dma_device.channels);
> > + for (i = 0; i < fdev->nr_channels; i++) {
> > + struct st_fdma_chan *fchan = &fdev->chans[i];
> > +
> > + fchan->fdev = fdev;
> > + fchan->vchan.desc_free = st_fdma_free_desc;
> > + vchan_init(&fchan->vchan, &fdev->dma_device);
>
> this initialized a tasklet
>
> > +static int st_fdma_remove(struct platform_device *pdev)
> > +{
> > + struct st_fdma_dev *fdev = platform_get_drvdata(pdev);
> > +
> > + devm_free_irq(&pdev->dev, fdev->irq, fdev);
> > + st_slim_rproc_put(fdev->slim_rproc);
> > + of_dma_controller_free(pdev->dev.of_node);
> > + dma_async_device_unregister(&fdev->dma_device);
>
> and that vchan tasklet is not quisced here :(
Eeek, good spot. Will fix in next version.
>
> > +MODULE_LICENSE("GPL v2");
> > +MODULE_DESCRIPTION("STMicroelectronics FDMA engine driver");
> > +MODULE_AUTHOR("Ludovic.barre <Ludovic.barre at st.com>");
> > +MODULE_AUTHOR("Peter Griffin <peter.griffin at linaro.org>");
>
> No MODULE_ALIAS?
Will add in next version.
regards,
Peter.
