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USB: cdc-acm: fix failed open not being detected
commit 8727bf6 upstream. Fix errors during open not being returned to userspace. Specifically, failed control-line manipulations or control or read urb submissions would not be detected. Fixes: 7fb57a0 ("USB: cdc-acm: Fix potential deadlock (lockdep warning)") Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
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