ACPI / EC: Fix query handler related issues
1. acpi_ec_remove_query_handlers() This patch refines the query handler removal logic implemented in acpi_ec_remove_query_handler(), making it to invoke new acpi_ec_remove_query_handlers() API, and ensuring all other removal code paths to invoke the new API to honor the reference count of the query handlers. 2. acpi_ec_get_query_handler_by_value() This patch also refines the query handler search logic originally implemented in acpi_ec_query(), collecting it into acpi_ec_get_query_handler_by_value(). And since schedule_work() can ensure the serilization of acpi_ec_event_handler(), we needn't put the mutex_lock() around schedule_work(). Signed-off-by: NLv Zheng <lv.zheng@intel.com> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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