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path: root/drivers/usb/host/ohci-hub.c
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Diffstat (limited to 'drivers/usb/host/ohci-hub.c')
-rw-r--r--drivers/usb/host/ohci-hub.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index b56739221d1..439beb784f3 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);
@@ -572,8 +579,6 @@ static int ohci_start_port_reset (struct usb_hcd *hcd, unsigned port)
return 0;
}
-static void start_hnp(struct ohci_hcd *ohci);
-
#else
#define ohci_start_port_reset NULL
@@ -760,7 +765,7 @@ static int ohci_hub_control (
#ifdef CONFIG_USB_OTG
if (hcd->self.otg_port == (wIndex + 1)
&& hcd->self.b_hnp_enable)
- start_hnp(ohci);
+ ohci->start_hnp(ohci);
else
#endif
ohci_writel (ohci, RH_PS_PSS,