trylock_bus
.trylock_bus = trylock_bus,
.trylock_bus = trylock_bus,
.trylock_bus = gmbus_trylock_bus,
return sdvo->i2c->lock_ops->trylock_bus(sdvo->i2c, flags);
.trylock_bus = proxy_trylock_bus,
int (*trylock_bus)(struct i2c_adapter *, unsigned int);