[POWERPC] Fix future firmware feature fixups function failure

Move firmware feature initialisation from pSeries_init_early to the
earlier pSeries_probe_hypertas so they are initialised before firmware
feature fixups are applied.

Currently firmware feature sections are only used for iSeries which
initialises the these features much earlier. This is a bug in waiting
on pSeries.

Also adds some whitespace fixups.

Signed-off-by: Michael Neuling <[e-mail]>
Acked-by: Arnd Bergmann <[e-mail]>
Signed-off-by: Paul Mackerras <[e-mail]>

arch/powerpc/platforms/pseries/firmware.c

···
  * device-tree/ibm,hypertas-functions.  Ultimately this functionality may
  * be moved into prom.c prom_init().
  */
-void __init fw_feature_init(void)
+void __init fw_feature_init(const char *hypertas, unsigned long len)
 {
-	struct device_node *dn;
-	const char *hypertas, *s;
-	int len, i;
+	const char *s;
+	int i;
 
 	DBG(" -> fw_feature_init()\n");
-
-	dn = of_find_node_by_path("/rtas");
-	if (dn == NULL) {
-		printk(KERN_ERR "WARNING! Cannot find RTAS in device-tree!\n");
-		goto out;
-	}
-
-	hypertas = of_get_property(dn, "ibm,hypertas-functions", &len);
-	if (hypertas == NULL)
-		goto out;
 
 	for (s = hypertas; s < hypertas + len; s += strlen(s) + 1) {
 		for (i = 0; i < FIRMWARE_MAX_FEATURES; i++) {
···
 		}
 	}
 
-out:
-	of_node_put(dn);
 	DBG(" <- fw_feature_init()\n");
 }

arch/powerpc/platforms/pseries/pseries.h

···
 #ifndef _PSERIES_PSERIES_H
 #define _PSERIES_PSERIES_H
 
-extern void __init fw_feature_init(void);
+extern void __init fw_feature_init(const char *hypertas, unsigned long len);
 
 struct pt_regs;
 

arch/powerpc/platforms/pseries/setup.c

···
 {
 	DBG(" -> pSeries_init_early()\n");
 
-	fw_feature_init();
-
 	if (firmware_has_feature(FW_FEATURE_LPAR))
 		find_udbg_vterm();
 
···
 					 const char *uname, int depth,
 					 void *data)
 {
+	const char *hypertas;
+	unsigned long len;
+
 	if (depth != 1 ||
 	    (strcmp(uname, "rtas") != 0 && strcmp(uname, "rtas@0") != 0))
- 		return 0;
+		return 0;
 
-	if (of_get_flat_dt_prop(node, "ibm,hypertas-functions", NULL) != NULL)
- 		powerpc_firmware_features |= FW_FEATURE_LPAR;
+	hypertas = of_get_flat_dt_prop(node, "ibm,hypertas-functions", &len);
+	if (!hypertas)
+		return 1;
 
- 	return 1;
+	powerpc_firmware_features |= FW_FEATURE_LPAR;
+	fw_feature_init(hypertas, len);
+
+	return 1;
 }
 
 static int __init pSeries_probe(void)