mtd: physmap_of: fix set but unused warning

drivers/mtd/maps/physmap_of.c: In function ‘of_flash_probe’:
drivers/mtd/maps/physmap_of.c:165:16: warning: variable ‘p’ set but not used [-Wunused-but-set-variable]

This could be a problem if the 'reg' property is not set, since that
means 'count' will be uninitialized.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>

diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c
index 22f3858..3fad359 100644 (file)
--- a/drivers/mtd/maps/physmap_of.c
+++ b/drivers/mtd/maps/physmap_of.c
@@ -186,7 +186,7 @@ static int of_flash_probe(struct platform_device *dev)
         * consists internally of 2 non-identical NOR chips on one die.
         */
        p = of_get_property(dp, "reg", &count);
-       if (count % reg_tuple_size != 0) {
+       if (!p || count % reg_tuple_size != 0) {
                dev_err(&dev->dev, "Malformed reg property on %s\n",
                                dev->dev.of_node->full_name);
                err = -EINVAL;