Re: [PATCH v3 3/3] spi: geni-qcom: Use devm functions to simplify code

[Dmitry Baryshkov]

On Mon, 9 Sept 2024 at 14:46, Jinjie Ruan <ruanjinjie@xxxxxxxxxx> wrote:
>
>
>
> On 2024/9/9 17:49, Dmitry Baryshkov wrote:
> > On Mon, Sep 09, 2024 at 03:31:41PM GMT, Jinjie Ruan wrote:
> >> Use devm_pm_runtime_enable(), devm_request_irq() and
> >> devm_spi_register_controller() to simplify code.
> >>
> >> And also register a callback spi_geni_release_dma_chan() with
> >> devm_add_action_or_reset(), to release dma channel in both error
> >> and device detach path, which can make sure the release sequence is
> >> consistent with the original one.
> >>
> >> 1. Unregister spi controller.
> >> 2. Free the IRQ.
> >> 3. Free DMA chans
> >> 4. Disable runtime PM.
> >>
> >> So the remove function can also be removed.
> >>
> >> Suggested-by: Doug Anderson <dianders@xxxxxxxxxxxx>
> >> Signed-off-by: Jinjie Ruan <ruanjinjie@xxxxxxxxxx>
> >> ---
> >> v3:
> >> - Land the rest of the cleanups afterwards.
> >> ---
> >>  drivers/spi/spi-geni-qcom.c | 37 +++++++++++++------------------------
> >>  1 file changed, 13 insertions(+), 24 deletions(-)
> >>
> >> diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
> >> index 6f4057330444..8b0039d14605 100644
> >> --- a/drivers/spi/spi-geni-qcom.c
> >> +++ b/drivers/spi/spi-geni-qcom.c
> >> @@ -632,8 +632,10 @@ static int spi_geni_grab_gpi_chan(struct spi_geni_master *mas)
> >>      return ret;
> >>  }
> >>
> >> -static void spi_geni_release_dma_chan(struct spi_geni_master *mas)
> >> +static void spi_geni_release_dma_chan(void *data)
> >>  {
> >> +    struct spi_geni_master *mas = data;
> >> +
> >>      if (mas->rx) {
> >>              dma_release_channel(mas->rx);
> >>              mas->rx = NULL;
> >> @@ -1132,6 +1134,12 @@ static int spi_geni_probe(struct platform_device *pdev)
> >>      if (ret)
> >>              return ret;
> >>
> >> +    ret = devm_add_action_or_reset(dev, spi_geni_release_dma_chan, spi);
> >
> > This should be mas, not spi.
> >
> > Doesn't looks like this was tested. Please correct me if I'm wrong.
>
> Yes, you are right, the data should be struct spi_geni_master, which is
> mas. Sorry, only compile passed.

Please perform a runtime test or mention it in the cover letter that
it was only compile-tested.



-- 
With best wishes
Dmitry