Searched hist:f8f48b6957bf182339495e6be429f7bdc7ef1981 (Results 1 – 1 of 1) sorted by relevance
| /openbmc/qemu/hw/usb/ |
| H A D | hcd-uhci.c | diff f8f48b6957bf182339495e6be429f7bdc7ef1981 Fri Dec 14 07:35:36 CST 2012 Hans de Goede <hdegoede@redhat.com> uhci: Limit amount of frames processed in one go
Before this patch uhci would process an unlimited amount of frames when
behind on schedule, by setting the timer to a time already past, causing the
timer subsys to immediately recall the frame_timer function gain.
This would cause invalid cancellations of bulk queues when the catching up
processed more then 32 frames at a moment when the bulk qh was temporarily
unlinked (which the Linux uhci driver does).
This patch fixes this by processing maximum 16 frames in one go, and always
setting the timer one ms later, making the code behave more like the ehci
code.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
|