Many other bits in USBSTS register are "clear-by-writing-1". Let's make sure that we clear *only* STS_EINT and not any of the other bits as they might be needed later. Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx> --- drivers/usb/host/xhci-ring.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index b4ec80d18078..116b4a0dadbb 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2630,8 +2630,7 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd) * so we can receive interrupts from other MSI-X interrupters. * Write 1 to clear the interrupt status. */ - status |= STS_EINT; - writel(status, &xhci->op_regs->status); + writel(STS_EINT, &xhci->op_regs->status); /* FIXME when MSI-X is supported and there are multiple vectors */ /* Clear the MSI-X event interrupt status */ -- 2.11.0 -- 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
