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Johan Hovold
9cbbd0c186
USB interfaces hold a reference to their parent USB device to make sure
they do not outlive the parent.
Add a comment explaining that this reference is specifically needed for
asynchronous device resets and the device type need_parent_lock feature
(to allow driver core to lock the parent when only holding a reference
to the interface).
See commits:
524134d422 ("USB: don't cancel queued resets when unbinding drivers")
0f554506a3fc ("driver core: fix parent lock use-after-free on USB disconnect")
for further details.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20261015074831.1418677-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>