On Fri, 2011-08-26 at 13:39 +0800, jerome huang wrote:
> Please find the attachments.
>
> Thanks,
> Jerome
>
Please apply test2.patch and post the dmesg.
Thanks,
Andiry
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 36ce572..3fbdbbd 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -688,6 +688,8 @@ enum hub_activation_type {
static void hub_init_func2(struct work_struct *ws);
static void hub_init_func3(struct work_struct *ws);
+static int hub_port_reset(struct usb_hub *hub, int port1,
+ struct usb_device *udev, unsigned int delay, bool warm);
static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
{
@@ -796,6 +798,14 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
}
}
+ if (hub_is_superspeed(hub->hdev) &&
+ (portstatus & USB_PORT_STAT_LINK_STATE)
+ == USB_SS_PORT_LS_COMP_MOD) {
+ dev_dbg(hub_dev, "warm reset port %d\n", i);
+ hub_port_reset(hub, port1, NULL,
+ HUB_BH_RESET_TIME, true);
+ }
+
/* Clear status-change flags; we'll debounce later */
if (portchange & USB_PORT_STAT_C_CONNECTION) {
need_debounce_delay = true;
