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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>
This commit is contained in:
Michael Ellerman 2015-11-24 22:26:09 +11:00
parent 209eb4e5cb
commit 08eb105a7c
1 changed files with 6 additions and 10 deletions
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16
arch/powerpc/xmon/xmon.c
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@ -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 */
}