3.2-stable review patch. If anyone has any objections, please let me know.
------------------ From: Geoff Levand <[email protected]> commit aaa0ef289afe9186f81e2340114ea413eef0492a upstream. 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 <[email protected]> Acked-by: Alan Stern <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- drivers/usb/host/ehci-hcd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index e0ca995..9496b7d 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -670,6 +670,7 @@ static int ehci_init(struct usb_hcd *hcd) hw = ehci->async->hw; hw->hw_next = QH_NEXT(ehci, ehci->async->qh_dma); hw->hw_info1 = cpu_to_hc32(ehci, QH_HEAD); + hw->hw_info1 |= cpu_to_hc32(ehci, (1 << 7)); /* I = 1 */ hw->hw_token = cpu_to_hc32(ehci, QTD_STS_HALT); hw->hw_qtd_next = EHCI_LIST_END(ehci); ehci->async->qh_state = QH_STATE_LINKED; -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
