powerpc/xmon: Use rtas_call_unlocked() in xmon

Avoid open coding the logic by using rtas_call_unlocked().

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 6 insertions, 10 deletions

diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index e8c7a937955e..07a8508cb7fa 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -320,6 +320,7 @@ static inline void disable_surveillance(void)
 #ifdef CONFIG_PPC_PSERIES
         /* Since this can't be a module, args should end up below 4GB. */
         static struct rtas_args args;
+        int token;
 
         /*
          * At this point we have got all the cpus we can into
@@ -328,17 +329,12 @@ static inline void disable_surveillance(void)
          * If we did try to take rtas.lock there would be a
          * real possibility of deadlock.
          */
-        args.token = rtas_token("set-indicator");
-        if (args.token == RTAS_UNKNOWN_SERVICE)
+        token = rtas_token("set-indicator");
+        if (token == RTAS_UNKNOWN_SERVICE)
                 return;
-        args.token = cpu_to_be32(args.token);
-        args.nargs = cpu_to_be32(3);
-        args.nret = cpu_to_be32(1);
-        args.rets = &args.args[3];
-        args.args[0] = cpu_to_be32(SURVEILLANCE_TOKEN);
-        args.args[1] = 0;
-        args.args[2] = 0;
-        enter_rtas(__pa(&args));
+
+        rtas_call_unlocked(&args, token, 3, 1, NULL, SURVEILLANCE_TOKEN, 0, 0);
+
 #endif /* CONFIG_PPC_PSERIES */
 }