tree 0beaecc5c1de54558ce6aad072dcdcc731595d15
parent df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cb
author Geoff Levand <geoff@infradead.org> 1320796878 -0800
committer Geoff Levand <geoff@infradead.org> 1323456480 -0800

usb: PS3 EHCI QH read work-around

PS3 EHCI HC errata fix 244.  The SCC EHCI HC will not correctly perform QH
reads that occur near or span a micro-frame boundry.  This is due to a problem
in the Nak Count Reload Control logic (EHCI Specification 1.0 Section 4.9.1).

The work-around for this problem is for the HC driver to set I=1 (inactive) for
QHs with H=1 (list head).

Signed-off-by: Geoff Levand <geoff@infradead.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>