Hi Tony,
On Thu, Nov 03, 2016 at 03:55:32PM -0700, Tony Lindgren wrote:
> * Tony Lindgren <t...@atomide.com> [161103 13:59]:
> > * Ladislav Michl <la...@linux-mips.org> [161101 14:14]:
> > > > cacaaf80c3a6 ("usb: musb: Call pm_runtime from musb_gadget_queue")
> > > > d8e5f0eca1e8 ("usb: musb: Fix hardirq-safe hardirq-unsafe lock order
> > > > error")
> > >
> > > tested with v4.9-rc3 which have these included.
> >
> > OK thanks.
>
> So here's something to test, v4.9-rc3 + the PHY patch I
> posted + the patch below.
>
> > Hmm yeah playing with a hub connected devices don't always enumerate.
> > When that happens, I get this:
> >
> > usb 1-1: reset high-speed USB device number 45 using musb-hdrc
> > usb 1-1: reset high-speed USB device number 45 using musb-hdrc
> > usb 1-1: reset high-speed USB device number 45 using musb-hdrc
> > usb 1-1: USB disconnect, device number 45
> > usb 1-1: new high-speed USB device number 47 using musb-hdrc
> > usb 1-1: new high-speed USB device number 48 using musb-hdrc
> > ...
> >
> > And that keeps on going until I reconnect the hub.
>
> The patch below seems to work with PM for me, except I
> the dsps glue layer won't go to idle after disconnecting
> the hub. On 2430 glue layer things idle for me properly
> and I don't seem to get any more vbus errors.
All your patches on top of current Linus' git and revert of:
commit 87326e858448c40e32f142c0b8dcc59d7b27c641
Author: Tony Lindgren <t...@atomide.com>
Date: Tue May 31 10:05:20 2016 -0500
usb: musb: Remove extra PM runtime calls from 2430 glue layer
does the trick for me (reverted patch which applies bellow). I also
alternatively tried to increase pm_runtime_set_autosuspend_delay up
to 1000 without luck.
Hope this helps,
ladis
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 451b372..a623e45 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -218,8 +218,13 @@ static void omap_musb_mailbox_work(struct work_struct
*mailbox_work)
{
struct omap2430_glue *glue = container_of(mailbox_work,
struct omap2430_glue, omap_musb_mailbox_work);
+ struct musb *musb = glue_to_musb(glue);
+ struct device *dev = musb->controller;
+ pm_runtime_get_sync(dev);
omap_musb_set_mailbox(glue);
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
}
static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci)
@@ -289,6 +294,16 @@ static int omap2430_musb_init(struct musb *musb)
phy_init(musb->phy);
phy_power_on(musb->phy);
+ /*
+ * Enable runtime PM for musb parent (this driver). We can't
+ * do it earlier as struct musb is not yet allocated and we
+ * need to touch the musb registers for runtime PM.
+ */
+ pm_runtime_enable(glue->dev);
+ status = pm_runtime_get_sync(glue->dev);
+ if (status < 0)
+ goto err1;
+
l = musb_readl(musb->mregs, OTG_INTERFSEL);
if (data->interface_type == MUSB_INTERFACE_UTMI) {
@@ -312,7 +327,11 @@ static int omap2430_musb_init(struct musb *musb)
if (glue->status != MUSB_UNKNOWN)
omap_musb_set_mailbox(glue);
+ pm_runtime_put(glue->dev);
return 0;
+
+err1:
+ return status;
}
static void omap2430_musb_enable(struct musb *musb)
@@ -512,10 +531,6 @@ static int omap2430_probe(struct platform_device *pdev)
goto err2;
}
- 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");
@@ -538,7 +553,6 @@ static int omap2430_remove(struct platform_device *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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