USB: ELAN U132 Host Controller Driver: convert sw_lock to mutex
The ELAN U132 Host Controller Driver uses the semaphore sw_lock as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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