These bits will be set after we do a HC Reset and need to be cleared.
(XHCI 14.19.1.2.3).
Signed-off-by: John Youn <johnyoun@xxxxxxxxxxxx>
---
drivers/usb/host/xhci-hub.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index eac5b53..c75065d 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -272,6 +272,7 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf)
{
unsigned long flags;
u32 temp, status;
+ u32 clear;
int i, retval;
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
int ports;
@@ -302,6 +303,22 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf)
buf[1] |= 1 << (i - 7);
status = 1;
}
+ /* FIXME: These are not supported yet in usbcore
+ * however they need to be cleared somewhere because
+ * they will be set when we do a HC Reset
+ * (XHCI 14.19.1.2.3). */
+ if (temp & (PORT_WRC | PORT_RC)) {
+ clear = xhci_port_state_to_neutral(temp);
+ if (temp & PORT_WRC) {
+ clear |= PORT_WRC;
+ xhci_dbg(xhci, "Clearing PORT_WRC\n");
+ }
+ if (temp & PORT_RC) {
+ clear |= PORT_RC;
+ xhci_dbg(xhci, "Clearing PORT_RC\n");
+ }
+ xhci_writel(xhci, clear, addr);
+ }
}
spin_unlock_irqrestore(&xhci->lock, flags);
return status ? retval : 0;
--
1.6.2.5
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