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Message-ID: <f48282eff10c475d82034576c081614d@BL2PR03MB226.namprd03.prod.outlook.com> Date: Thu, 6 Mar 2014 09:34:40 +0000 From: Peter Chen <Peter.Chen@...escale.com> To: Jagdish Gedia <jvgediya@...il.com> CC: "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: RE: USB remote wakeup through gpio interrupt > > Hi Peter, > > My usb device is not capable of giving interrupt when it finishes using > usb. So i dont have any idea where can i call pm_runtime_put for my usb > device? > > the other thing is that, earlier you have told, waking up usb device > through interrupt is same as writing "on" to ../power/control , but i > think writing "on" to ../power/control will disable the autosuspend for > usb device in future, but i want autosuspend to be enabled for my usb > device always. Will using pm_runtime_get and pm_runtime_put cause the > disable of autosuspend for usb device? > It is not related to autosuspend. Make sure you use above two APIs in pair. Of cos, writing "on" to "../power/control" will disable autosuspend. Peter > > Thanks, > Jagdish Gediya > > On Thu, Mar 6, 2014 at 2:53 PM, Jagdish Gedia <jvgediya@...il.com> wrote: > > Hi Alan, > > > > As you have told, i have executed pm_request_resume() function from my > > interrupt handler, and it is waking up my USB device. I have > > implemented all this functionality in class driver(cdc-acm.c). > > but what is happening is after 2-3 times, ausosuspend is getting > > disable for my device. I want autosuspend to be enabled for usb device > > forever. Do pm_request_resume function causes this behavior? > > > > > > > > Thanks, > > Jagdish Gediya > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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