powerpc/powernv: Make OPAL NVRAM device tree accesses endian safe

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/powernv/opal-nvram.c b/arch/powerpc/platforms/powernv/opal-nvram.c
index 3f83e1a..acd9f7e 100644 (file)
--- a/arch/powerpc/platforms/powernv/opal-nvram.c
+++ b/arch/powerpc/platforms/powernv/opal-nvram.c
@@ -65,7 +65,7 @@ static ssize_t opal_nvram_write(char *buf, size_t count, loff_t *index)
 void __init opal_nvram_init(void)
 {
        struct device_node *np;
-       const u32 *nbytes_p;
+       const __be32 *nbytes_p;
 
        np = of_find_compatible_node(NULL, NULL, "ibm,opal-nvram");
        if (np == NULL)
@@ -76,7 +76,7 @@ void __init opal_nvram_init(void)
                of_node_put(np);
                return;
        }
-       nvram_size = *nbytes_p;
+       nvram_size = be32_to_cpup(nbytes_p);
 
        printk(KERN_INFO "OPAL nvram setup, %u bytes\n", nvram_size);
        of_node_put(np);