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Message-ID: <v2x74fd948d1004141127uda643cb2kf291fbaf3f2065b7@mail.gmail.com> Date: Wed, 14 Apr 2010 19:27:42 +0100 From: Pedro Ribeiro <pedrib@...il.com> To: Alan Stern <stern@...land.harvard.edu> Cc: Daniel Mack <daniel@...aq.de>, USB list <linux-usb@...r.kernel.org>, Andi Kleen <andi@...stfloor.org>, Kernel development list <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, Greg KH <gregkh@...e.de> Subject: Re: USB transfer_buffer allocations on 64bit systems On 14 April 2010 19:23, Alan Stern <stern@...land.harvard.edu> wrote: > On Wed, 14 Apr 2010, Pedro Ribeiro wrote: > >> The best way to trigger the issue is to connect a dib0700 based DVB >> adapter. All you need is to connect it. Since it polls for the remote >> control every 50 msec, it causes a constant interference. Beware that >> on 2.6.34 this behaviour has been corrected. Other DVB adapters may >> trigger the same issue if they also poll constatly for the rc. > > Your computer has two EHCI controllers, doesn't it? Can you plug the > DVB into a different USB bus from the audio device? If you do, does > the interference still occur? > > Alan Stern > > It does not matter on which ports I plug into, even if in different buses not sharing IRQ's. Pedro -- 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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