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USB: usbip: fix stub_dev hub disconnect 

JIRA: https://issues.redhat.com/browse/RHEL-56984

commit 97475763484245916735a1aa9a3310a01d46b008
Author: Jonas Blixt <jonas.blixt@actia.se>
Date:   Thu Jun 15 11:28:10 2023 +0200

    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>

Signed-off-by: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>
This commit is contained in:
Jose Ignacio Tornos Martinez 2024-11-13 11:16:42 +01:00
parent c497e65a13
commit 6a21300237
1 changed files with 7 additions and 2 deletions
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9
drivers/usb/usbip/stub_dev.c
View File

@ -464,8 +464,13 @@ static void stub_disconnect(struct usb_device *udev)
/* release port */
rc = usb_hub_release_port(udev->parent, udev->portnum,
(struct usb_dev_state *) udev);
if (rc) {
dev_dbg(&udev->dev, "unable to release port\n");
/*
* NOTE: If a HUB disconnect triggered disconnect of the down stream
* device usb_hub_release_port will return -ENODEV so we can safely ignore
* that error here.
*/
if (rc && (rc != -ENODEV)) {
dev_dbg(&udev->dev, "unable to release port (%i)\n", rc);
return;
}