Date: Wed, 28 Feb 2007 03:12:05 -0700 (MST) From: "M. Warner Losh" <imp@bsdimp.com> To: doconnor@gsoft.com.au Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/dev/usb umass.c Message-ID: <20070228.031205.-1303465006.imp@bsdimp.com> In-Reply-To: <200702281302.18223.doconnor@gsoft.com.au> References: <200702272233.l1RMXocb004983@repoman.freebsd.org> <200702281302.18223.doconnor@gsoft.com.au>
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In message: <200702281302.18223.doconnor@gsoft.com.au>
"Daniel O'Connor" <doconnor@gsoft.com.au> writes:
: On Wednesday 28 February 2007 09:03, Warner Losh wrote:
: > Create a new quirk READ_CAPACITY_OFFBY1 and add a quirk for the
: > SanDISK ImageMate that I have that suffers from this problem (the
: > SDDR-31). It intercepts the READ_CAPACITY response and adjusts it
: > from number of sectors to max sector for devices with this quirk.
: >
: > Reading the Linux source suggests that there are a host of
: > other devices with this issue, including iPods and some popular
: > cameras. I've not added quirks for them, since I don't have the
: > devices in front of me to test.
:
: Couldn't you automatically test for this? ie try and read the last sector.
:
: Obviously if there is a real error in the last sector you'd get a bogus result
: but I don't think that is likely to be very common :)
To amplify my last answer:
No. I couldn't automatically test for this. Others can submit
patches if they want it.
Warner
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