Date: Sun, 8 Feb 2009 21:08:00 +0000 (UTC) From: Andrew Thompson <thompsa@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r188336 - head/sys/dev/usb2/controller Message-ID: <200902082108.n18L80vC034416@svn.freebsd.org>
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Author: thompsa Date: Sun Feb 8 21:08:00 2009 New Revision: 188336 URL: http://svn.freebsd.org/changeset/base/188336 Log: The NRL value in the queue head must be zero for interrupt transfers. This was diagnosed using a USB analyser obtained through a FreeBSD Foundation grant. Thanks to: FreeBSD Foundation Modified: head/sys/dev/usb2/controller/ehci2.c Modified: head/sys/dev/usb2/controller/ehci2.c ============================================================================== --- head/sys/dev/usb2/controller/ehci2.c Sun Feb 8 20:52:09 2009 (r188335) +++ head/sys/dev/usb2/controller/ehci2.c Sun Feb 8 21:08:00 2009 (r188336) @@ -1892,7 +1892,9 @@ ehci_setup_standard_chain(struct usb2_xf if (usb2_get_speed(xfer->xroot->udev) == USB_SPEED_HIGH) { qh_endp |= (EHCI_QH_SET_EPS(EHCI_QH_SPEED_HIGH) | - EHCI_QH_DTC | EHCI_QH_SET_NRL(8)); + EHCI_QH_DTC); + if (methods != &ehci_device_intr_methods) + qh_endp |= EHCI_QH_SET_NRL(8); } else { if (usb2_get_speed(xfer->xroot->udev) == USB_SPEED_FULL) {
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