Date: Tue, 8 Mar 2011 08:02:39 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r219395 - head/sys/dev/usb Message-ID: <201103080802.p2882dn2061825@svn.freebsd.org>
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Author: hselasky Date: Tue Mar 8 08:02:39 2011 New Revision: 219395 URL: http://svn.freebsd.org/changeset/base/219395 Log: - Bugfix: Root HUBs do not support re-enumeration. MFC after: 14 days Approved by: thompsa (mentor) Modified: head/sys/dev/usb/usb_generic.c Modified: head/sys/dev/usb/usb_generic.c ============================================================================== --- head/sys/dev/usb/usb_generic.c Tue Mar 8 07:42:09 2011 (r219394) +++ head/sys/dev/usb/usb_generic.c Tue Mar 8 08:02:39 2011 (r219395) @@ -952,8 +952,14 @@ ugen_re_enumerate(struct usb_fifo *f) } if (udev->flags.usb_mode != USB_MODE_HOST) { /* not possible in device side mode */ + DPRINTFN(6, "device mode\n"); return (ENOTTY); } + if (udev->parent_hub == NULL) { + /* the root HUB cannot be re-enumerated */ + DPRINTFN(6, "cannot reset root HUB\n"); + return (EINVAL); + } /* make sure all FIFO's are gone */ /* else there can be a deadlock */ if (ugen_fs_uninit(f)) {
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