svn commit: r225458 - in stable/8/sys: dev/usb dev/usb/quirk
dev/usb/storage sys
Robert Watson
rwatson at FreeBSD.org
Sat Sep 10 10:54:08 UTC 2011
On Fri, 9 Sep 2011, Hans Petter Selasky wrote:
> Log:
> MFC r225350 and r225400:
>
> This patch adds automatic detection of USB mass storage devices
> which does not support the no synchronize cache SCSI command.
>
> The __FreeBSD_version version macro has been bumped and
> external kernel modules needs to be recompiled after
> this patch.
>
> PR: usb/160299
For most other classes of hardware device driver framework KPIs -- especially
things like PCI bus attachment, busdma, CAM, ifnet, and GEOM frameworks, our
MFC rules would strictly disallow this sort of change, on the grounds that it
is our KBI policy that we not break common classes of third-party device
drivers (i.e., require them to be recompiled). My suspicion is that we should
be applying the same rules to the USB framework -- however, I don't know if we
have any third-party USB device drivers?
(If we do, then this change should not have been MFC'd.)
Robert
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