Re: [Bug 1412] Copy from USB1 CF/SM reader stalls, no actual content is read (only directory structure)

From: Nicolas Mailhot <Nicolas.Mailhot@laPoste.net>
To: Jens Axboe <axboe@suse.de>
Cc: Alan Stern <stern@rowland.harvard.edu>,
	USB development list <linux-usb-devel@lists.sourceforge.net>,
	linux-kernel@vger.kernel.org
Subject: Re: [Bug 1412] Copy from USB1 CF/SM reader stalls, no actual content is read (only directory structure)
Date: Fri, 07 Nov 2003 22:02:08 +0100	[thread overview]
Message-ID: <1068238928.4088.2.camel@m70.net81-64-235.noos.fr> (raw)
In-Reply-To: <1068197144.21576.32.camel@ulysse.olympe.o2t>

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Le ven 07/11/2003 à 10:25, Nicolas Mailhot a écrit :
> Le ven 07/11/2003 à 10:09, Jens Axboe a écrit :

> > Try with this debug patch then, does it work now?
> > 
> > ===== drivers/scsi/scsi_lib.c 1.77 vs edited =====
> > --- 1.77/drivers/scsi/scsi_lib.c	Tue Oct 14 09:28:06 2003
> > +++ edited/drivers/scsi/scsi_lib.c	Fri Nov  7 10:08:52 2003
> > @@ -1215,6 +1215,7 @@
> >  
> >  u64 scsi_calculate_bounce_limit(struct Scsi_Host *shost)
> >  {
> > +#if 0
> >  	struct device *host_dev;
> >  
> >  	if (shost->unchecked_isa_dma)
> > @@ -1229,6 +1230,9 @@
> >  	 * hardware have no practical limit.
> >  	 */
> >  	return BLK_BOUNCE_ANY;
> > +#else
> > +	return BLK_BOUNCE_HIGH;
> > +#endif
> >  }
> >  
> >  struct request_queue *scsi_alloc_queue(struct scsi_device *sdev)
> 
> Will try this evening when I have physical access to the system. (It's
> difficult to plug a USB device via ssh;)

Well, it does work now (couldn't believe my eyes, tried three times in a
row just to be sure). Is this supposed to be a definitive fix that will
be in the next bk snapshots or should I wait for something else ?

Regards,

-- 
Nicolas Mailhot

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