USB: ohci_usb warn "irq nobody cared" on shutdown

When ohci-hcd is shutting down, call ohci_usb_reset reset ohci-hcd, the
root hub generate an interrupt, but ohci->rh_state is OHCI_RH_HALTED,
and ohci_irq ignore the interrupt, the kernel trigger warning "irq
nobody cared". ehci-hcd is first disable interrupts, then reset ehci.

This patch disable ohci interrupt before reset ohci.

The patch is tested at the arm cortex-a9 demo board.

Signed-off-by: caizhiyong <caizhiyong@huawei.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index a9d3437da220..8f6b695af6a4 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -938,8 +938,8 @@ static void ohci_stop (struct usb_hcd *hcd)
         if (quirk_nec(ohci))
                 flush_work(&ohci->nec_work);
 
-        ohci_usb_reset (ohci);
         ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
+        ohci_usb_reset(ohci);
         free_irq(hcd->irq, hcd);
         hcd->irq = 0;