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authorGerd Hoffmann <kraxel@redhat.com>2012-03-21 18:25:25 +0100
committerGerd Hoffmann <kraxel@redhat.com>2012-04-17 10:23:27 +0200
commit52b0fecdba217e02d7e7eef975d942b153950b2f (patch)
treea3ad85305d76fcdea10c8b30135be0f35a4f37de /hw/usb/host-linux.c
parenteeb0cf9abf5992f35eca18c4cc63300df30521a4 (diff)
downloadfocaccia-qemu-52b0fecdba217e02d7e7eef975d942b153950b2f.tar.gz
focaccia-qemu-52b0fecdba217e02d7e7eef975d942b153950b2f.zip
usb-uhci: stop queue filling when we find a in-flight td
Not only QHs can form rings, but TDs too.  With the new
queuing/pipelining support we are following TD chains and
can actually walk in circles.  An assert() prevents us from
entering an endless loop then.

Fix is easy:  Just stop queuing when we figure the TD we are
about to queue up is in flight already.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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