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Message-ID: <20150421161622.69637059@kant> Date: Tue, 21 Apr 2015 16:16:22 +0200 From: Stefan Richter <stefanr@...6.in-berlin.de> To: Clemens Ladisch <clemens@...isch.de> Cc: Laurent Vivier <laurent@...ier.eu>, linux1394-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org Subject: Re: [PATCH 2/2] firewire: add a parameter to force the speed of the devices. On Apr 21 Clemens Ladisch wrote: > Laurent Vivier wrote: > > I was trying to use my old iPod mini firewire (first generation) with > > a new firewire card I put in my PC (VIA Technologies, Inc. VT6306/7/8), > > but the iPod was not mounted and failed with the following error: > > reading config rom failed: no ack > > It appears that the configuration rom cannot be read after the > > device max speed is set to something else than SCODE_100. > > > > According to the iPod configuration ROM, it should support SCODE_400. > > > > This patch adds a a parameter (force_speed) to the firewire-core module > > to be able to set the max speed to use with the firewire devices. > > Why a module parameter? Why not automatically apply this workaround to > this specific device? I doubt that this iPod model needs the workaround. I suspect the particular hardware combination needs one. -- Stefan Richter -=====-===== -=-- =-=-= http://arcgraph.de/sr/ -- 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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