Date: Mon, 5 May 2014 08:18:51 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Hans Petter Selasky <hps@selasky.org> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: USB isochronous traffic with Rasberry Pi [WAS: Re: USB audio device on Raspberry Pi] Message-ID: <CAJ-Vmo=XmH-RX6_i13NuAXhq-jTC%2BWedGiyOMJaPO4r014DSgw@mail.gmail.com> In-Reply-To: <53677CB8.5000800@selasky.org> References: <20140425154430.GA76168@utility-01.thismonkey.com> <535A8AEA.1000100@selasky.org> <20140425204134.GA458@cicely7.cicely.de> <20140430091411.GA45015@utility-01.thismonkey.com> <5360C0A7.9010407@selasky.org> <1398867266.22079.51.camel@revolution.hippie.lan> <CAGW5k5bZ_bTQUXuzNm=tbwx3npz1_HoOR3vM8TBRVFs8zWCq-w@mail.gmail.com> <5362638B.1080104@selasky.org> <5363C133.2000304@selasky.org> <53677CB8.5000800@selasky.org>
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evil idea: #define DELAY(ms) _DELAY(ms, __FILE__, __LINE__) .. then modify the relevant arm delay function to take FILE/LINE and KTR log it. :-) -a On 5 May 2014 04:57, Hans Petter Selasky <hps@selasky.org> wrote: > Hi, > > To get USB isochronous traffic working with the DWC OTG you need this patch: > > http://svnweb.freebsd.org/changeset/base/265358 > > BTW: I see that every second or so there is a glitch. I suspect this is > because someone in the kernel is calling DELAY(). Is there an easy way to > figure out who is blocking the DWC OTG interrupt routine from executing? > > I was thinking about adding something like: > > if (!cold) > printf("Using delay\n"); > > To the DELAY() function to figure out the caller. > > --HPS > _______________________________________________ > freebsd-arm@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-arm > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org"
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