From: Lonnie Mendez <lmendez19@austin.rr.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [patch][usb] another hub fix
Date: Sat, 25 Mar 2006 21:40:37 -0600 [thread overview]
Message-ID: <44260D35.4050402@austin.rr.com> (raw)
Hello list. The bsd uhub driver has helped to uncover a bug in the
hub layer:
usb_20 (11.24.2.7.2.2)
usb11 (11.16.2.6.2.2):
{C_PORT_ENABLE}
This bit is set when the PORT_ENABLE bit changes from one to zero as a
result of a Port Error condition ... This bit is not set on any other
changes to PORT_ENABLE.
During a port reset condition the C_PORT_ENABLE bit is being set.
The spec however indicates this should only be set in an error
condition. The linked patch fixes this and resolves the "illegal enable
change" message from the uhub driver on bsd guests.
http://gnome.dnsalias.net/patches/qemu-uhub-CPEfix.patch
reply other threads:[~2006-03-26 3:40 UTC|newest]
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