When end user inserts a usb3 device and put dut to s3.
Then hotplug the usb3 disk under s3.
The device will be lost upon resuming from s3.
There is a corner case that the hub->change_bits for
the usb3 port is not set when usb port change event happens.
This will cause hub driver ignore the device enumeration
in the end of port_event in hub.c
Signed-off-by: "Huki Huang" <huki.hu...@intel.com>
---
drivers/usb/core/hub.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index bee1351..859adcb 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -4747,6 +4747,7 @@ static void hub_port_connect(struct usb_hub *hub, int
port1, u16 portstatus,
if (hcd->usb_phy && !hdev->parent)
usb_phy_notify_disconnect(hcd->usb_phy, udev->speed);
usb_disconnect(&port_dev->child);
+ set_bit(port1, hub->change_bits);
}
/* We can forget about a "removed" device when there's a physical
--
2.8.1
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