usbip: prevent bind loops on devices attached to vhci_hcd

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commit ef54cf0c60 upstream.

usbip host binds to devices attached to vhci_hcd on the same server
when user does attach over localhost or specifies the server as the
remote.

usbip attach -r localhost -b busid
or
usbip attach -r servername (or server IP)

Unbind followed by bind works, however device is left in a bad state with
accesses via the attached busid result in errors and system hangs during
shutdown.

Fix it to check and bail out if the device is already attached to vhci_hcd.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Shuah Khan 2018-01-17 12:07:30 -07:00 • committed by Greg Kroah-Hartman

parent 327b34d402

commit 053cef5ae9

1 changed files with 9 additions and 0 deletions

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tools/usb/usbip/src/usbip_bind.c

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