Move or_asynclistaddr programming to ehci_submit_async() function to make sure queue head is properly programmed before every transfer. This solves the problem with changing qh address.
Also remove unneeded qh_list->qh_link reprogramming at the end of transfer.
Signed-off-by: Ilya Yanok ilya.yanok@cogentembedded.com --- drivers/usb/host/ehci-hcd.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 04300be..3be2a77 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -348,6 +348,9 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer, flush_dcache_range((uint32_t)&qh, (uint32_t)&qh + sizeof(struct QH)); flush_dcache_range((uint32_t)qtd, (uint32_t)qtd + sizeof(qtd));
+ /* Set async. queue head pointer. */ + ehci_writel(&hcor->or_asynclistaddr, (uint32_t)&qh_list); + usbsts = ehci_readl(&hcor->or_usbsts); ehci_writel(&hcor->or_usbsts, (usbsts & 0x3f));
@@ -403,8 +406,6 @@ ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer, goto fail; }
- qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH); - token = hc32_to_cpu(qh.qh_overlay.qt_token); if (!(token & 0x80)) { debug("TOKEN=%#x\n", token); @@ -741,9 +742,6 @@ int usb_lowlevel_init(void) qh_list.qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE); qh_list.qh_overlay.qt_token = cpu_to_hc32(0x40);
- /* Set async. queue head pointer. */ - ehci_writel(&hcor->or_asynclistaddr, (uint32_t)&qh_list); - reg = ehci_readl(&hccr->cr_hcsparams); descriptor.hub.bNbrPorts = HCS_N_PORTS(reg); printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts);