[PATCH 2/2] pseries: Fix endian issues in cpu hot-removal

[Thomas Falcon]

When removing a cpu, this patch makes sure that values
gotten from or passed to firmware are in the correct
endian format.

Signed-off-by: Thomas Falcon <tlfalcon at linux.vnet.ibm.com>
---
 arch/powerpc/platforms/pseries/dlpar.c       | 14 +++++++-------
 arch/powerpc/platforms/pseries/hotplug-cpu.c |  8 ++++----
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index cd425dc..c5ecfdb 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -442,7 +442,7 @@ static int dlpar_offline_cpu(struct device_node *dn)
 	int rc = 0;
 	unsigned int cpu;
 	int len, nthreads, i;
-	const u32 *intserv;
+	const __be32 *intserv;
 
 	intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len);
 	if (!intserv)
@@ -453,7 +453,7 @@ static int dlpar_offline_cpu(struct device_node *dn)
 	cpu_maps_update_begin();
 	for (i = 0; i < nthreads; i++) {
 		for_each_present_cpu(cpu) {
-			if (get_hard_smp_processor_id(cpu) != intserv[i])
+			if (get_hard_smp_processor_id(cpu) != be32_to_cpu(intserv[i]))
 				continue;
 
 			if (get_cpu_current_state(cpu) == CPU_STATE_OFFLINE)
@@ -475,14 +475,14 @@ static int dlpar_offline_cpu(struct device_node *dn)
 			 * Upgrade it's state to CPU_STATE_OFFLINE.
 			 */
 			set_preferred_offline_state(cpu, CPU_STATE_OFFLINE);
-			BUG_ON(plpar_hcall_norets(H_PROD, intserv[i])
+			BUG_ON(plpar_hcall_norets(H_PROD, be32_to_cpu(intserv[i]))
 								!= H_SUCCESS);
 			__cpu_die(cpu);
 			break;
 		}
 		if (cpu == num_possible_cpus())
 			printk(KERN_WARNING "Could not find cpu to offline "
-			       "with physical id 0x%x\n", intserv[i]);
+			       "with physical id 0x%x\n", be32_to_cpu(intserv[i]));
 	}
 	cpu_maps_update_done();
 
@@ -494,7 +494,7 @@ out:
 static ssize_t dlpar_cpu_release(const char *buf, size_t count)
 {
 	struct device_node *dn;
-	const u32 *drc_index;
+	const __be32 *drc_index;
 	int rc;
 
 	dn = of_find_node_by_path(buf);
@@ -513,7 +513,7 @@ static ssize_t dlpar_cpu_release(const char *buf, size_t count)
 		return -EINVAL;
 	}
 
-	rc = dlpar_release_drc(*drc_index);
+	rc = dlpar_release_drc(be32_to_cpup(drc_index));
 	if (rc) {
 		of_node_put(dn);
 		return rc;
@@ -521,7 +521,7 @@ static ssize_t dlpar_cpu_release(const char *buf, size_t count)
 
 	rc = dlpar_detach_node(dn);
 	if (rc) {
-		dlpar_acquire_drc(*drc_index);
+		dlpar_acquire_drc(be32_to_cpup(drc_index));
 		return rc;
 	}
 
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index 447f8c6..031762d 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -90,7 +90,7 @@ static void rtas_stop_self(void)
 {
 	static struct rtas_args args = {
 		.nargs = 0,
-		.nret = 1,
+		.nret = cpu_to_be32(1),
 		.rets = &args.args[0],
 	};
 
@@ -312,7 +312,7 @@ static void pseries_remove_processor(struct device_node *np)
 {
 	unsigned int cpu;
 	int len, nthreads, i;
-	const u32 *intserv;
+	const __be32 *intserv;
 
 	intserv = of_get_property(np, "ibm,ppc-interrupt-server#s", &len);
 	if (!intserv)
@@ -323,7 +323,7 @@ static void pseries_remove_processor(struct device_node *np)
 	cpu_maps_update_begin();
 	for (i = 0; i < nthreads; i++) {
 		for_each_present_cpu(cpu) {
-			if (get_hard_smp_processor_id(cpu) != intserv[i])
+			if (get_hard_smp_processor_id(cpu) != be32_to_cpu(intserv[i]))
 				continue;
 			BUG_ON(cpu_online(cpu));
 			set_cpu_present(cpu, false);
@@ -332,7 +332,7 @@ static void pseries_remove_processor(struct device_node *np)
 		}
 		if (cpu >= nr_cpu_ids)
 			printk(KERN_WARNING "Could not find cpu to remove "
-			       "with physical id 0x%x\n", intserv[i]);
+			       "with physical id 0x%x\n", be32_to_cpu(intserv[i]));
 	}
 	cpu_maps_update_done();
 }
-- 
1.8.5.2