[PATCH 05/12] powerpc/pseries: Add and use LPPACA_SIZE constant

[Thiago Jung Bauermann]

Helps document what the hard-coded number means.

Also take the opportunity to fix an #endif comment.

Suggested-by: Alexey Kardashevskiy <a...@linux.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauer...@linux.ibm.com>
---
 arch/powerpc/kernel/paca.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index 9cc91d03ab62..854105db5cff 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -56,6 +56,8 @@ static void *__init alloc_paca_data(unsigned long size, 
unsigned long align,
 
 #ifdef CONFIG_PPC_PSERIES
 
+#define LPPACA_SIZE 0x400
+
 /*
  * See asm/lppaca.h for more detail.
  *
@@ -69,7 +71,7 @@ static inline void init_lppaca(struct lppaca *lppaca)
 
        *lppaca = (struct lppaca) {
                .desc = cpu_to_be32(0xd397d781),        /* "LpPa" */
-               .size = cpu_to_be16(0x400),
+               .size = cpu_to_be16(LPPACA_SIZE),
                .fpregs_in_use = 1,
                .slb_count = cpu_to_be16(64),
                .vmxregs_in_use = 0,
@@ -79,19 +81,18 @@ static inline void init_lppaca(struct lppaca *lppaca)
 static struct lppaca * __init new_lppaca(int cpu, unsigned long limit)
 {
        struct lppaca *lp;
-       size_t size = 0x400;
 
-       BUILD_BUG_ON(size < sizeof(struct lppaca));
+       BUILD_BUG_ON(sizeof(struct lppaca) > LPPACA_SIZE);
 
        if (early_cpu_has_feature(CPU_FTR_HVMODE))
                return NULL;
 
-       lp = alloc_paca_data(size, 0x400, limit, cpu);
+       lp = alloc_paca_data(LPPACA_SIZE, 0x400, limit, cpu);
        init_lppaca(lp);
 
        return lp;
 }
-#endif /* CONFIG_PPC_BOOK3S */
+#endif /* CONFIG_PPC_PSERIES */
 
 #ifdef CONFIG_PPC_BOOK3S_64