[PATCH 6/8] powerpc/prom: Simplify the logic while fetching SLB size

[Anshuman Khandual <khandual@linux.vnet.ibm.com>]

This patch just simplifies the existing code logic while fetching
the SLB size property from the device tree. This also changes the
function name from check_cpu_slb_size to init_mmu_slb_size as
it just initializes the mmu_slb_size value.

Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
---
 arch/powerpc/kernel/prom.c | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 8b888b1..4bb43c0 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -218,22 +218,18 @@ static void __init check_cpu_pa_features(unsigned long node)
 }
 
 #ifdef CONFIG_PPC_STD_MMU_64
-static void __init check_cpu_slb_size(unsigned long node)
+static void __init init_mmu_slb_size(unsigned long node)
 {
 	const __be32 *slb_size_ptr;
 
-	slb_size_ptr = of_get_flat_dt_prop(node, "slb-size", NULL);
-	if (slb_size_ptr != NULL) {
-		mmu_slb_size = be32_to_cpup(slb_size_ptr);
-		return;
-	}
-	slb_size_ptr = of_get_flat_dt_prop(node, "ibm,slb-size", NULL);
-	if (slb_size_ptr != NULL) {
+	slb_size_ptr = of_get_flat_dt_prop(node, "slb-size", NULL) ? :
+			of_get_flat_dt_prop(node, "ibm,slb-size", NULL);
+
+	if (slb_size_ptr)
 		mmu_slb_size = be32_to_cpup(slb_size_ptr);
-	}
 }
 #else
-#define check_cpu_slb_size(node) do { } while(0)
+#define init_mmu_slb_size(node) do { } while(0)
 #endif
 
 static struct feature_property {
@@ -380,7 +376,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
 
 	check_cpu_feature_properties(node);
 	check_cpu_pa_features(node);
-	check_cpu_slb_size(node);
+	init_mmu_slb_size(node);
 
 #ifdef CONFIG_PPC64
 	if (nthreads > 1)
-- 
2.1.0