These changes are a raw update to a vanilla kernel 4.1.10, with the

[kvmfornfv.git] / kernel / arch / powerpc / kernel / rtas.c

diff --git a/kernel/arch/powerpc/kernel/rtas.c b/kernel/arch/powerpc/kernel/rtas.c
index 7a488c1..caffb10 100644 (file)
--- a/kernel/arch/powerpc/kernel/rtas.c
+++ b/kernel/arch/powerpc/kernel/rtas.c
@@ -584,6 +584,23 @@ int rtas_get_sensor(int sensor, int index, int *state)
 }
 EXPORT_SYMBOL(rtas_get_sensor);
 
+int rtas_get_sensor_fast(int sensor, int index, int *state)
+{
+       int token = rtas_token("get-sensor-state");
+       int rc;
+
+       if (token == RTAS_UNKNOWN_SERVICE)
+               return -ENOENT;
+
+       rc = rtas_call(token, 2, 2, state, sensor, index);
+       WARN_ON(rc == RTAS_BUSY || (rc >= RTAS_EXTENDED_DELAY_MIN &&
+                                   rc <= RTAS_EXTENDED_DELAY_MAX));
+
+       if (rc < 0)
+               return rtas_error_rc(rc);
+       return rc;
+}
+
 bool rtas_indicator_present(int token, int *maxindex)
 {
        int proplen, count, i;