From: Luca Lauro <[email protected]> Store the DMA address of the periodic queue head in ehci->periodic_queue_dma. Without this initialization the periodic schedule may reference an invalid address.
Signed-off-by: Luca Lauro <[email protected]> --- drivers/usb/host/ehci-hcd.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 51b9e52a4f..c060d09c64 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -897,6 +897,8 @@ static int ehci_init(struct usb_host *host) periodic->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE); periodic->qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE); + ehci->periodic_queue_dma = ehci_qh_dma(ehci, periodic); + /* * Step 2: Setup frame-list: Every microframe, USB tries the same list. * In particular, device specifications on polling frequency -- 2.47.3
