diff options
| author | Dominik Bozek <dominikx.bozek@intel.com> | 2018-04-13 10:42:31 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-06 16:24:39 +0200 |
| commit | 5f66271532ce7f00bc98aeaa945ca5cd22abb742 (patch) | |
| tree | d5c86cc5051e5cf6daa3fb7ed6ccd6e66633a09a | |
| parent | e9996e124ea742fb54b60b59329858bdc2918c9a (diff) | |
usb: hub: Don't wait for connect state at resume for powered-off ports
[ Upstream commit 5d111f5190848d6fb1c414dc57797efea3526a2f ]
wait_for_connected() wait till a port change status to
USB_PORT_STAT_CONNECTION, but this is not possible if
the port is unpowered. The loop will only exit at timeout.
Such case take place if an over-current incident happen
while system is in S3. Then during resume wait_for_connected()
will wait 2s, which may be noticeable by the user.
Signed-off-by: Dominik Bozek <dominikx.bozek@intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/core/hub.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 93756664592a..2facffea2ee0 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3308,6 +3308,10 @@ static int wait_for_ss_port_enable(struct usb_device *udev, while (delay_ms < 2000) { if (status || *portstatus & USB_PORT_STAT_CONNECTION) break; + if (!port_is_power_on(hub, *portstatus)) { + status = -ENODEV; + break; + } msleep(20); delay_ms += 20; status = hub_port_status(hub, *port1, portstatus, portchange); |