diff options
| author | Nathan Lynch <ntl@pobox.com> | 2006-12-07 00:50:45 (GMT) |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-12-08 06:10:22 (GMT) |
| commit | f2d6d2d8bb4e9bb4aef225c149e42cac3ac3d4d0 (patch) | |
| tree | 7efba50f075c5b751c7f28379c2bbc53f48555e1 | |
| parent | 9d9d868ecf93b35c3c5b0ea3d639dc85e423eb02 (diff) | |
| download | linux-fsl-qoriq-f2d6d2d8bb4e9bb4aef225c149e42cac3ac3d4d0.tar.xz | |
[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>
| -rw-r--r-- | arch/powerpc/kernel/rtas.c | 6 | ||||
| -rw-r--r-- | include/asm-powerpc/rtas.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 952f4c2..76b5d7e 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 diff --git a/include/asm-powerpc/rtas.h b/include/asm-powerpc/rtas.h index 031ef57..8eaa7b2 100644 --- a/include/asm-powerpc/rtas.h +++ b/include/asm-powerpc/rtas.h @@ -159,6 +159,7 @@ extern struct rtas_t rtas; extern void enter_rtas(unsigned long); extern int rtas_token(const char *service); +extern int rtas_service_present(const char *service); extern int rtas_call(int token, int, int, int *, ...); extern void rtas_restart(char *cmd); extern void rtas_power_off(void); |