In check_port_resume_type, we will check port power status to determine whether
the status should change to -ENODEV.
If all ports power control of the hub are handled at once, the port power
status may not represent the real case and cause resume fail.
At this patch, we add hub_is_port_power_switchable as well as checking the port
power.
Signed-off-by: Chechun Kuo <vichy....@gmail.com>
---
drivers/usb/core/hub.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index b649fef..a50b257 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2904,7 +2904,8 @@ static int check_port_resume_type(struct usb_device *udev,
}
/* Is the device still present? */
else if (status || port_is_suspended(hub, portstatus) ||
- !port_is_power_on(hub, portstatus) ||
+ (hub_is_port_power_switchable(hub)
+ && !port_is_power_on(hub, portstatus)) ||
!(portstatus & USB_PORT_STAT_CONNECTION)) {
if (status >= 0)
status = -ENODEV;
--
1.9.1
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