Date: Fri, 1 Aug 2008 14:00:14 GMT From: Arthur Hartwig <a_hartwig@fastmail.fm> To: freebsd-usb@FreeBSD.org Subject: Re: usb/110988: [umass] [patch] Handling of quirk IGNORE_RESIDUE is umass.c is broken Message-ID: <200808011400.m71E0Eqw008482@freefall.freebsd.org>
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The following reply was made to PR usb/110988; it has been noted by GNATS. From: Arthur Hartwig <a_hartwig@fastmail.fm> To: bug-followup@FreeBSD.org, freebsdusb@bindone.de Cc: Subject: Re: usb/110988: [umass] [patch] Handling of quirk IGNORE_RESIDUE is umass.c is broken Date: Fri, 01 Aug 2008 23:45:32 +1000 Concerning the report that some ICY BOX IB-220U-Wh units display the problem described here and in PR 110991 and some don't I'll recount my experience. I recently bought 6 "no name" USB adapters for notebook IDE hard drives. Four of the adapters are silver in colour and came from the same supplier. The two other adapters (one red and one blue) came from a different supplier. Apart from the colour all adapters look the same on the outside. Inside there are small differences in the printed circuit board and the indicator LED. However the adapters behave quite differently. On both FreeBSD 6.3 and 7.0 the silver adapters all successfully dd a few blocks from the start of the disk but the other two adapters exit from the dd command reporting 0 blocks copied. Examination of the reports from usbdevs shows the silver adapters report use of a Initio chipset (Vendor=0x13fd, Product=0x1040) whereas the adapters which don't work report the Super Top chipset (Vendor=0x14cd, product=0x6600). Both sets of adapters work in Windows XP and Linux 2.6.24 Perhaps the Icy Box can contain one of a number different chipsets with the variant in behaviour dependent on the chipset used. I also have some USB adapters for SATA notebook drives. These use a JMicron chipset and work with FreeBSD 7.0. I would be happy to test a patch for FreeBSD 7.0 to make the Super Top based adapters work and verify that it doesn't break support for the other two adapters I have.
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