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USB: usbip: fix stub_dev hub disconnect
If a hub is disconnected that has device(s) that's attached to the usbip layer
the disconnect function might fail because it tries to release the port
on an already disconnected hub.
Fixes: 6080cd0e92
("staging: usbip: claim ports used by shared devices")
Signed-off-by: Jonas Blixt <jonas.blixt@actia.se>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230615092810.1215490-1-jonas.blixt@actia.se
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -464,8 +464,13 @@ static void stub_disconnect(struct usb_device *udev)
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/* release port */
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rc = usb_hub_release_port(udev->parent, udev->portnum,
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(struct usb_dev_state *) udev);
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if (rc) {
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dev_dbg(&udev->dev, "unable to release port\n");
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/*
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* NOTE: If a HUB disconnect triggered disconnect of the down stream
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* device usb_hub_release_port will return -ENODEV so we can safely ignore
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* that error here.
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*/
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if (rc && (rc != -ENODEV)) {
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dev_dbg(&udev->dev, "unable to release port (%i)\n", rc);
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return;
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}
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