1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index b56739221d11..d54183f1d701 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -483,6 +483,13 @@ ohci_hub_status_data (struct usb_hcd *hcd, char *buf)
                 length++;
         }
 
+        /* Some broken controllers never turn off RHCS in the interrupt
+         * status register.  For their sake we won't re-enable RHSC
+         * interrupts if the flag is already set.
+         */
+        if (ohci_readl(ohci, &ohci->regs->intrstatus) & OHCI_INTR_RHSC)
+                changed = 1;
+
         /* look at each port */
         for (i = 0; i < ohci->num_ports; i++) {
                 u32     status = roothub_portstatus (ohci, i);