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Diffstat (limited to 'drivers/usb/host/ohci-hub.c')
| -rw-r--r-- | drivers/usb/host/ohci-hub.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c index b56739221d1..d54183f1d70 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); |