Messages in this thread | | | Subject | Re: [PATCH 4.1 099/267] phy: twl4030-usb: remove incorrect pm_runtime_get_sync() in probe function. | From | Alexander Holler <> | Date | Sat, 8 Aug 2015 07:53:22 +0200 |
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Hello,
this patch killed the musb-host functionality on my classic Beagleboard (rev c4). Symptom was that it there was a message I don't remember and the attached device didn't enumerate anymore (likely because of missing power, but I'm not sure).
A simple revert has fixed it, I haven't looked further into the problem.
Regards,
Alexander Holler
Am 31.07.2015 um 21:39 schrieb Greg Kroah-Hartman: > 4.1-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: NeilBrown <neil@brown.name> > > commit 4724e27114c4a7eceeee07db227a17fcab6f165c upstream. > > The USB phy should initialize with power-off, and will be powered on > by the USB system when a cable connection is detected. > > Having this pm_runtime_get_sync() during probe causes the phy to > *always* be powered on. > Removing it returns to sensible power management. > > Fixes: 96be39ab34b77c6f6f5cd6ae03aac6c6449ee5c4 > Signed-off-by: NeilBrown <neil@brown.name> > Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > > --- > drivers/phy/phy-twl4030-usb.c | 1 - > 1 file changed, 1 deletion(-) > > --- a/drivers/phy/phy-twl4030-usb.c > +++ b/drivers/phy/phy-twl4030-usb.c > @@ -711,7 +711,6 @@ static int twl4030_usb_probe(struct plat > pm_runtime_use_autosuspend(&pdev->dev); > pm_runtime_set_autosuspend_delay(&pdev->dev, 2000); > pm_runtime_enable(&pdev->dev); > - pm_runtime_get_sync(&pdev->dev); > > /* Our job is to use irqs and status from the power module > * to keep the transceiver disabled when nothing's connected. > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
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