A usb device in the connection state. Then host is suspend and resume.
But the usb device could not be at the right speed. We should be reset
the reset.
Signed-off-by: Pengcheng Li <lpc...@hisilicon.com>
---
drivers/usb/core/hub.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index bee1351..cd71bb3 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3455,7 +3455,7 @@ int usb_port_resume(struct usb_device *udev, pm_message_t
msg)
struct usb_hub *hub = usb_hub_to_struct_hub(udev->parent);
struct usb_port *port_dev = hub->ports[udev->portnum - 1];
int port1 = udev->portnum;
- int status;
+ int status, retval;
u16 portchange, portstatus;
if (!test_and_set_bit(port1, hub->child_usage_bits)) {
@@ -3512,6 +3512,10 @@ int usb_port_resume(struct usb_device *udev,
pm_message_t msg)
}
}
+ retval = hub_port_reset(hub, port1, udev, HUB_ROOT_RESET_TIME, false);
+ if (retval < 0)
+ hub_port_disable(hub, port1, 0);
+
if (udev->persist_enabled)
status = wait_for_connected(udev, hub, &port1, &portchange,
&portstatus);
--
2.8.2
