[PATCH v4 08/14] usb: ehci: initialize periodic_queue_dma

[Luca Lauro via B4 Relay]

From: Luca Lauro <famlauro93l at gmail.com>

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 <famlauro93l at gmail.com>
---
 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