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ACPI: make ACPI button funcs no-ops if not built in 

Yakui pointed out that we don't properly no-op the ACPI button routines
if the button driver isn't built in.  This will cause problems if ACPI
is disabled, so provide stub functions in that case.

Reported-by: ykzhao <yakui.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Jesse Barnes 2009-09-15 16:57:24 -07:00
parent d660467c3f
commit 1a133e0c9d
1 changed files with 15 additions and 0 deletions
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15
include/acpi/button.h
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@ -3,8 +3,23 @@
#include <linux/notifier.h>
#if defined(CONFIG_ACPI_BUTTON) || defined(CONFIG_ACPI_BUTTON_MODULE)
extern int acpi_lid_notifier_register(struct notifier_block *nb);
extern int acpi_lid_notifier_unregister(struct notifier_block *nb);
extern int acpi_lid_open(void);
#else
static inline int acpi_lid_notifier_register(struct notifier_block *nb)
{
return 0;
}
static inline int acpi_lid_notifier_unregister(struct notifier_block *nb)
{
return 0;
}
static inline int acpi_lid_open(void)
{
return 1;
}
#endif /* defined(CONFIG_ACPI_BUTTON) || defined(CONFIG_ACPI_BUTTON_MODULE) */
#endif /* ACPI_BUTTON_H */