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Message-ID: <CAAW3YpYBwPRa7E5iGDaUGi2gu5DHHE5F3hDexXns_Hd98mj-yg@mail.gmail.com> Date: Tue, 2 Sep 2014 17:32:01 -0700 From: Todd Poynor <toddpoynor@...gle.com> To: balbi@...com Cc: Kiran Kumar Raparthy <kiran.kumar@...aro.org>, LKML <linux-kernel@...r.kernel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-usb@...r.kernel.org, Android Kernel Team <kernel-team@...roid.com>, John Stultz <john.stultz@...aro.org>, Arve Hj�nnev�g <arve@...roid.com>, Benoit Goby <benoit@...roid.com>, Ruchi Kandoi <kandoiruchi@...gle.com>, Badhri Jagan Sridharan <badhri@...gle.com> Subject: Re: [RFC 1/2] USB: OTG: Hold wakeupsource when VBUS present On Fri, Aug 29, 2014 at 1:50 PM, Felipe Balbi <balbi@...com> wrote: > Hi, > > On Wed, Aug 27, 2014 at 02:58:30PM -0700, Todd Poynor wrote: >> On Fri, Aug 22, 2014 at 10:12 AM, Felipe Balbi <balbi@...com> wrote: >> ... >> > you never explain why this is needed and you have also added some >> > information to commit log which shouldn't be here. >> >> Android uses this to prevent suspend from interfering with USB >> peripheral traffic, notably adb. > > aaaaah, that's because Android freezes userspace right ? Yes, and only wakeup interrupts will be enabled; it is a suspend-to-RAM. Todd -- 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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