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staging: android-alarm: Support old drivers via preprocessor aliasing

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Older out of tree drivers that were desgined to the Android Alarm
in-kernel API may not build due to the namespace collision fixed in
an earlier patch. Per Arve's suggestion, this patch provides
preprocessor macros that allow older drivers to build.

CC: Arve Hjønnevåg <arve@android.com>
CC: Android Kernel Team <kernel-team@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
John Stultz 2012-02-09 14:24:41 -08:00 committed by Greg Kroah-Hartman
parent 7f9b98a39b
commit 2157f89677
2 changed files with 23 additions and 0 deletions
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9
drivers/staging/android/Kconfig
View file

@ -122,6 +122,15 @@ config ANDROID_INTF_ALARM_DEV
help
Exports the alarm interface to user-space.
config ANDROID_ALARM_OLDDRV_COMPAT
bool "Android Alarm compatability with old drivers"
depends on ANDROID_INTF_ALARM
default n
help
Provides preprocessor alias to aid compatability with
older out-of-tree drivers that use the Android Alarm
in-kernel API. This will be removed eventually.
endif # if ANDROID
endmenu

14
drivers/staging/android/android_alarm.h
View file

@ -76,6 +76,20 @@ ktime_t alarm_get_elapsed_realtime(void);
/* set rtc while preserving elapsed realtime */
int android_alarm_set_rtc(const struct timespec ts);
#ifdef CONFIG_ANDROID_ALARM_OLDDRV_COMPAT
/*
* Some older drivers depend on the old API,
* so provide compatability macros for now.
*/
#define alarm android_alarm
#define alarm_init(x, y, z) android_alarm_init(x, y, z)
#define alarm_start_range(x, y, z) android_alarm_start_range(x, y, z)
#define alarm_try_to_cancel(x) android_alarm_try_to_cancel(x)
#define alarm_cancel(x) android_alarm_cancel(x)
#define alarm_set_rtc(x) android_alarm_set_rtc(x)
#endif
#endif
enum android_alarm_return_flags {