[POWERPC] Define of_read_ulong helper
There are various places where we want to extract an unsigned long
value from a device-tree property that can be 1 or 2 cells in length.
This replaces some open-coded calculations, and one place where we
assumed without checking that properties were the length we wanted,
with a little of_read_ulong() helper.
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index b9a2061..7a3c3f7 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -870,9 +870,7 @@
fp = get_property(cpu, name, NULL);
if (fp) {
found = 1;
- *val = 0;
- while (cells--)
- *val = (*val << 32) | *fp++;
+ *val = of_read_ulong(fp, cells);
}
of_node_put(cpu);