Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f2d6d2d8bb4e9bb4aef225c149e42cac3ac3d4d0
Commit: f2d6d2d8bb4e9bb4aef225c149e42cac3ac3d4d0
Parent: 9d9d868ecf93b35c3c5b0ea3d639dc85e423eb02
Author: Nathan Lynch <[EMAIL PROTECTED]>
AuthorDate: Wed Dec 6 18:50:45 2006 -0600
Committer: Paul Mackerras <[EMAIL PROTECTED]>
CommitDate: Fri Dec 8 17:10:22 2006 +1100
[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 <[EMAIL PROTECTED]>
Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
---
arch/powerpc/kernel/rtas.c | 6 ++++++
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);
-
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