ARM: use a temporary variable to hold maximum vmalloc size

We calculate the maximum size of the vmalloc space twice in
early_vmalloc(). Use a temporary variable to hold this value.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Yanfei Xu <yanfei.xu@windriver.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index ec57d4a..532b489 100644 (file)
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1132,6 +1132,7 @@ static unsigned long __initdata vmalloc_min =
 static int __init early_vmalloc(char *arg)
 {
        unsigned long vmalloc_reserve = memparse(arg, NULL);
+       unsigned long vmalloc_max;
 
        if (vmalloc_reserve < SZ_16M) {
                vmalloc_reserve = SZ_16M;
@@ -1139,8 +1140,9 @@ static int __init early_vmalloc(char *arg)
                        vmalloc_reserve >> 20);
        }
 
-       if (vmalloc_reserve > VMALLOC_END - (PAGE_OFFSET + SZ_32M)) {
-               vmalloc_reserve = VMALLOC_END - (PAGE_OFFSET + SZ_32M);
+       vmalloc_max = VMALLOC_END - (PAGE_OFFSET + SZ_32M);
+       if (vmalloc_reserve > vmalloc_max) {
+               vmalloc_reserve = vmalloc_max;
                pr_warn("vmalloc area is too big, limiting to %luMB\n",
                        vmalloc_reserve >> 20);
        }