Date: Fri, 30 Aug 2013 13:54:15 +0200 From: "Lundberg, Johannes" <johannes@brilliantservice.co.jp> To: Hans Petter Selasky <hps@bitfrost.no> Cc: FreeBSD Current <freebsd-current@freebsd.org>, "freebsd-usb@freebsd.org" <freebsd-usb@freebsd.org> Subject: Re: xhci broken on 10-CURRENT and 2013 MacBook Air? Message-ID: <CAASDrV=xi-qW-8tpYK-pyhh5xh7n90sy7s4uE3W405jgDkCcaw@mail.gmail.com> In-Reply-To: <52207030.8050107@bitfrost.no> References: <CAASDrV=_8XDFZqcVP7aHdgEwxtMEDyNDQAyM5dgPmJ6=toOpow@mail.gmail.com> <CAASDrVmyduRKwsp5oURYuHX8G4hoODn0TftbC5MfV=3XhhocrA@mail.gmail.com> <521B9CD7.8010902@bitfrost.no> <CAASDrVk5xjptRPttbQA6b7Tg_Pgf005EqMQpUhv-jNje%2B352%2BA@mail.gmail.com> <521C6C26.7050207@bitfrost.no> <CAASDrVnJj4%2BkhHB-StW3JpVuCqZx7MBcmqA59_Ay-06Jgu5PnQ@mail.gmail.com> <CAASDrVk4eWVLj0=VHygKk5iG9Zd0tSwNkqLX%2BLJjP=mD_LRrUw@mail.gmail.com> <52203EC9.4060808@bitfrost.no> <CAASDrVnwKOwqAVAu19gExpNvPYcwXo1V%2Bg=kVbnZWq5ic4NDvA@mail.gmail.com> <52207030.8050107@bitfrost.no>
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Still got the same behaviour after applying the patch... Johannes Lundberg BRILLIANTSERVICE CO., LTD. <http://www.brilliantservice.co.jp>; On Fri, Aug 30, 2013 at 12:13 PM, Hans Petter Selasky <hps@bitfrost.no>wrote: > On 08/30/13 11:35, Lundberg, Johannes wrote: > >> Hi Hans >> >> I tried the patch and the result is the same. However, I found the command >> that causes the freeze. Also, it is not always it freezes but maybe 9/10 >> reboots or more frequently. >> >> At the end of the function xhci_start_controller(..) there is a for loop: >> >> 487 for (i = 0; i != 100; i++) { >> 488 usb_pause_mtx(NULL, hz / 100); >> 489 temp = XREAD4(sc, oper, XHCI_USBSTS) & XHCI_STS_HCH; >> 490 if (!temp) >> 491 break; >> 492 } >> >> and it freezes at usb_pause_mtx(...) >> value of i is 0 >> value of hz is 1000 >> > > Hi, > > Can you try the attached patch? > > I think this is a problem inside DELAY(). Maybe you have to select another > timing source for DELAY(), mav @ CC'ed? > > --HPS > >
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