Vinod Koul wrote:
>
> On Tue, 2011-12-06 at 16:15 +0530, Tushar Behera wrote:
> > amba_probe() now calls pm_runtime_get_noresume() and pm_runtime_enable()
> > for the devices before the device probe is called. Hence we don't need
> > to call pm_runtime_get_xxx and pm_runtime_enable() in device probe again.
> > In the same way, since amba_remove() calls the respective pm_runtime
> > functions, those functions need not be called from device remove.
> >
> > This patch fixes following run time error with pl330 driver.
> >
> > dma-pl330 dma-pl330.0: Unbalanced pm_runtime_enable!
> > dma-pl330 dma-pl330.0: failed to get runtime pm
> >
> > Signed-off-by: Giridhar Maruthy <giridhar.maruthy@xxxxxxxxxx>
> > Signed-off-by: Tushar Behera <tushar.behera@xxxxxxxxxx>
> Looks fine to me. Do you want these to go thru slave-dma or samsung
> tree.
Hi Vinod,
I think, this patch can be sent to upstream via slave-dma tree and second one via Samsung tree separately and you can add my and Boojin Kim's ack(actually, she replied) on this when you apply.
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@xxxxxxxxxxx>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
> For latter:
> Acked-by: Vinod Koul <vinod.koul@xxxxxxxxxxxxxxx>
>
> > ---
> > drivers/dma/pl330.c | 17 ++---------------
> > 1 files changed, 2 insertions(+), 15 deletions(-)
> >
> > diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
> > index a626e15..cd07121 100644
> > --- a/drivers/dma/pl330.c
> > +++ b/drivers/dma/pl330.c
> > @@ -834,17 +834,7 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
> >
> > amba_set_drvdata(adev, pdmac);
> >
> > -#ifdef CONFIG_PM_RUNTIME
> > - /* to use the runtime PM helper functions */
> > - pm_runtime_enable(&adev->dev);
> > -
> > - /* enable the power domain */
> > - if (pm_runtime_get_sync(&adev->dev)) {
> > - dev_err(&adev->dev, "failed to get runtime pm\n");
> > - ret = -ENODEV;
> > - goto probe_err1;
> > - }
> > -#else
> > +#ifndef CONFIG_PM_RUNTIME
> > /* enable dma clk */
> > clk_enable(pdmac->clk);
> > #endif
> > @@ -977,10 +967,7 @@ static int __devexit pl330_remove(struct amba_device *adev)
> > res = &adev->res;
> > release_mem_region(res->start, resource_size(res));
> >
> > -#ifdef CONFIG_PM_RUNTIME
> > - pm_runtime_put(&adev->dev);
> > - pm_runtime_disable(&adev->dev);
> > -#else
> > +#ifndef CONFIG_PM_RUNTIME
> > clk_disable(pdmac->clk);
> > #endif
> >
>
>
> --
> ~Vinod
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