From 952c63e9512b63220886105cfc791507046fa39a Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Sat, 29 Jun 2013 00:24:38 +0800 Subject: ACPI: introduce helper function acpi_has_method() Introduce helper function acpi_has_method() and use it in a number of places to simplify code. [rjw: Changelog] Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/utils.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/acpi/utils.c') diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 744371304313..b08d97376f84 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -495,3 +495,18 @@ acpi_handle_printk(const char *level, acpi_handle handle, const char *fmt, ...) kfree(buffer.pointer); } EXPORT_SYMBOL(acpi_handle_printk); + +/** + * acpi_has_method: Check whether @handle has a method named @name + * @handle: ACPI device handle + * @name: name of object or method + * + * Check whether @handle has a method named @name. + */ +bool acpi_has_method(acpi_handle handle, char *name) +{ + acpi_handle tmp; + + return ACPI_SUCCESS(acpi_get_handle(handle, name, &tmp)); +} +EXPORT_SYMBOL(acpi_has_method); -- cgit v1.2.3