The usage of USB_CTRL_SET_TIMEOUT in xhci is incorrect. The definition of USB_CTRL_SET_TIMEOUT is 5000ms. The input timeout to wait_for_completion_interruptible_timeout is jiffies. That makes the timeout be longer than what we want, such as 50s in some platform.
The patch is to use XHCI_CMD_DEFAULT_TIMEOUT instead of USB_CTRL_SET_TIMEOUT as command completion event timeout. Signed-off-by: xiao jin <jin.x...@intel.com> --- drivers/usb/host/xhci-hub.c | 2 +- drivers/usb/host/xhci.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 1d35459..8dbaa81 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -295,7 +295,7 @@ static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend) /* Wait for last stop endpoint command to finish */ timeleft = wait_for_completion_interruptible_timeout( cmd->completion, - USB_CTRL_SET_TIMEOUT); + XHCI_CMD_DEFAULT_TIMEOUT); if (timeleft <= 0) { xhci_warn(xhci, "%s while waiting for stop endpoint command\n", timeleft == 0 ? "Timeout" : "Signal"); diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 9478caa..5dc6903 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -3486,7 +3486,7 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev) /* Wait for the Reset Device command to finish */ timeleft = wait_for_completion_interruptible_timeout( reset_device_cmd->completion, - USB_CTRL_SET_TIMEOUT); + XHCI_CMD_DEFAULT_TIMEOUT); if (timeleft <= 0) { xhci_warn(xhci, "%s while waiting for reset device command\n", timeleft == 0 ? "Timeout" : "Signal"); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/