Intel EG20T USB host controller does not send SOF in resuming time after suspending, if the FLR bit was not cleared. When pen drive is attached, the controller has a long resuming time to try re-connect it. This patch clear the FLR bit in suspending time for fixing the issue. Signed-off-by: Tomoya MORINAGA <tomoya.rohm@xxxxxxxxx> --- v2: Update comments from Alan Stern Add patch description Always clear the STS_FLR flag. --- drivers/usb/host/ehci-hub.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index fc9e7cc..818a2f1 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -318,6 +318,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) ehci_readl(ehci, &ehci->regs->intr_enable); ehci->next_statechange = jiffies + msecs_to_jiffies(10); + ehci_writel(ehci, STS_FLR, &ehci->regs->status); spin_unlock_irq (&ehci->lock); /* ehci_work() may have re-enabled the watchdog timer, which we do not -- 1.7.4.4 -- 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
