ush: ehci: initialize altnext pointers in QH

[karo-tx-uboot.git] / drivers / usb / host / ehci-hcd.c

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 8bd1eb8a99836f16f95113ac6d2e68b339cf5489..7068b762d8a459536d565e5b6c4057ff3fa842d2 100644 (file)
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -201,6 +201,9 @@ static int ehci_shutdown(struct ehci_ctrl *ctrl)
        int i, ret = 0;
        uint32_t cmd, reg;
 
+       if (!ctrl || !ctrl->hcor)
+               return -EINVAL;
+
        cmd = ehci_readl(&ctrl->hcor->or_usbcmd);
        cmd &= ~(CMD_PSE | CMD_ASE);
        ehci_writel(&ctrl->hcor->or_usbcmd, cmd);
@@ -392,6 +395,7 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
                QH_ENDPT2_UFCMASK(0) | QH_ENDPT2_UFSMASK(0);
        qh->qh_endpt2 = cpu_to_hc32(endpt);
        qh->qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
+       qh->qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
 
        tdp = &qh->qh_overlay.qt_next;
 
@@ -945,7 +949,7 @@ int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
 #endif
        /* Set the high address word (aka segment) for 64-bit controller */
        if (ehci_readl(&ehcic[index].hccr->cr_hccparams) & 1)
-               ehci_writel(ehcic[index].hcor->or_ctrldssegment, 0);
+               ehci_writel(&ehcic[index].hcor->or_ctrldssegment, 0);
 
        qh_list = &ehcic[index].qh_list;
 
@@ -1183,6 +1187,7 @@ create_int_queue(struct usb_device *dev, unsigned long pipe, int queuesize,
                        qh->qh_link = QH_LINK_TERMINATE;
 
                qh->qh_overlay.qt_next = (uint32_t)td;
+               qh->qh_overlay.qt_altnext = QT_NEXT_TERMINATE;
                qh->qh_endpt1 = (0 << 28) | /* No NAK reload (ehci 4.9) */
                        (usb_maxpacket(dev, pipe) << 16) | /* MPS */
                        (1 << 14) |