* Ladislav Michl <ladis@xxxxxxxxxxxxxx> [161108 10:20]:
> On Tue, Nov 08, 2016 at 07:55:50AM -0700, Tony Lindgren wrote:
> > * Tony Lindgren <tony@xxxxxxxxxxx> [161108 07:50]:
> > > Weird, I have not figured out what happens there..
> > >
> > > The only thing I'm still wondering about is if phy-twl4030-usb.c
> > > is losing ID pin interrupts occasionally but have not been
> > > able to verify that. Maybe try the following additional patch
> > > and see if it makes any difference?
> >
> > And eventually the glue layers only should need to do this on
> > init:
> >
> > pm_runtime_enable(glue->dev);
> >
> > And this on the exit path:
> >
> > pm_runtime_disable(glue->dev);
> >
> > And musb core as the child device should keep things awake
> > when needed.
>
> Tested your patch, does not work, does not trigger "USB link status err"
> both without and with pm_runtime_enable/disable.
OK. The patch below still works for me with musb_core.c
autosuspend_delay set to 100. Also works with it set to 10.
Note that we had two timeouts without this.. Can you try
playing with the timeout in musb_core.c and see if that
helps?
Regards,
Tony
8< ------------------
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1898,8 +1898,7 @@ static void musb_pm_runtime_check_session(struct musb *musb)
musb->quirk_retries = 3;
} else {
musb_dbg(musb, "Allow PM with no session: %02x", devctl);
- pm_runtime_mark_last_busy(musb->controller);
- pm_runtime_put_autosuspend(musb->controller);
+ pm_runtime_put_sync_suspend(musb->controller);
}
musb->session = s;
@@ -2268,7 +2267,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
* 500 ms for some margin.
*/
pm_runtime_use_autosuspend(musb->controller);
- pm_runtime_set_autosuspend_delay(musb->controller, 500);
+ pm_runtime_set_autosuspend_delay(musb->controller, 100);
pm_runtime_enable(musb->controller);
pm_runtime_get_sync(musb->controller);
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -513,17 +513,18 @@ static int omap2430_probe(struct platform_device *pdev)
}
pm_runtime_enable(glue->dev);
- pm_runtime_use_autosuspend(glue->dev);
- pm_runtime_set_autosuspend_delay(glue->dev, 100);
ret = platform_device_add(musb);
if (ret) {
dev_err(&pdev->dev, "failed to register musb device\n");
- goto err2;
+ goto err3;
}
return 0;
+err3:
+ pm_runtime_disable(glue->dev);
+
err2:
platform_device_put(musb);
@@ -535,10 +536,7 @@ static int omap2430_remove(struct platform_device *pdev)
{
struct omap2430_glue *glue = platform_get_drvdata(pdev);
- pm_runtime_get_sync(glue->dev);
platform_device_unregister(glue->musb);
- pm_runtime_put_sync(glue->dev);
- pm_runtime_dont_use_autosuspend(glue->dev);
pm_runtime_disable(glue->dev);
return 0;
--
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