diff options
| author | Nathan Lynch <ntl@pobox.com> | 2006-12-07 01:50:45 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-12-08 07:10:22 +0100 |
| commit | f2d6d2d8bb4e9bb4aef225c149e42cac3ac3d4d0 (patch) | |
| tree | 7efba50f075c5b751c7f28379c2bbc53f48555e1 /arch/powerpc/kernel/rtas.c | |
| parent | [POWERPC] maple: Select PPC_RTAS (diff) | |
| download | linux-f2d6d2d8bb4e9bb4aef225c149e42cac3ac3d4d0.tar.xz linux-f2d6d2d8bb4e9bb4aef225c149e42cac3ac3d4d0.zip | |
[POWERPC] Add rtas_service_present() helper
To test for the existence of an RTAS function, we typically do:
foo_token = rtas_token("foo");
if (foo_token == RTAS_UNKNOWN_SERVICE)
return;
Add a rtas_service_present method, which provides a more conventional
boolean interface for testing the existence of an RTAS method.
Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/rtas.c')
| -rw-r--r-- | arch/powerpc/kernel/rtas.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 952f4c2fc1eb..76b5d7ebdcc6 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -303,6 +303,12 @@ int rtas_token(const char *service) } EXPORT_SYMBOL(rtas_token); +int rtas_service_present(const char *service) +{ + return rtas_token(service) != RTAS_UNKNOWN_SERVICE; +} +EXPORT_SYMBOL(rtas_service_present); + #ifdef CONFIG_RTAS_ERROR_LOGGING /* * Return the firmware-specified size of the error log buffer |