From: caizhiyong <caizhiyong@xxxxxxxxxx> 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@xxxxxxxxxx> --- drivers/usb/host/ohci-hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index a9d3437..e4b3c63 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; -- 1.8.1.5 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
