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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>
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