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| author | Geoff Levand <geoff@infradead.org> | 2011-11-08 16:01:18 -0800 |
|---|---|---|
| committer | Geoff Levand <geoff@infradead.org> | 2011-12-09 10:48:00 -0800 |
| commit | aaa0ef289afe9186f81e2340114ea413eef0492a (patch) | |
| tree | 0beaecc5c1de54558ce6aad072dcdcc731595d15 /security | |
| parent | df7c1ca229ebffe14a6fb3f13d16b1dd2a1731cb (diff) | |
| download | lwn-aaa0ef289afe9186f81e2340114ea413eef0492a.tar.gz lwn-aaa0ef289afe9186f81e2340114ea413eef0492a.zip | |
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>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions