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| author |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-18 09:08:05 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-18 09:08:05 +0100 |
| commit | d9e3d899bc7a852d44b3305ed49799fbf090e756 (patch) | |
| tree | f3a75cb5f60be908a4384bd9e7add08486d7d338 /drivers/usb/core/hub.c | |
| parent | usb: usbtest: Add TEST 29, toggle sync, Clear toggle between bulk writes (diff) | |
| parent | Linux 4.15-rc4 (diff) | |
| download | linux-dev-d9e3d899bc7a852d44b3305ed49799fbf090e756.tar.xz linux-dev-d9e3d899bc7a852d44b3305ed49799fbf090e756.zip | |
Merge 4.15-rc4 into usb-next
We want the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/hub.c')
| -rw-r--r-- | drivers/usb/core/hub.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 09bd3c3ad8b1..c5c1f6cf3228 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -4976,6 +4976,15 @@ loop: usb_put_dev(udev); if ((status == -ENOTCONN) || (status == -ENOTSUPP)) break; + + /* When halfway through our retry count, power-cycle the port */ + if (i == (SET_CONFIG_TRIES / 2) - 1) { + dev_info(&port_dev->dev, "attempt power cycle\n"); + usb_hub_set_port_power(hdev, hub, port1, false); + msleep(2 * hub_power_on_good_delay(hub)); + usb_hub_set_port_power(hdev, hub, port1, true); + msleep(hub_power_on_good_delay(hub)); + } } if (hub->hdev->parent || !hcd->driver->port_handed_over || |