of: make of_node_check_flag() device_node parameter const

The device_node argument isn't modified by of_node_check_flag(), so mark it
const.

Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Link: https://lore.kernel.org/r/20211014173055.2117872-1-nathanl@linux.ibm.com
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/include/linux/of.h b/include/linux/of.h
index 807f8168dad979df5d0f665000b05e2033d45f54..ff143a027abc4b2752d2457a280a39811ce32c0e 100644 (file)
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -185,7 +185,7 @@ static inline bool of_node_is_root(const struct device_node *node)
        return node && (node->parent == NULL);
 }
 
-static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
+static inline int of_node_check_flag(const struct device_node *n, unsigned long flag)
 {
        return test_bit(flag, &n->_flags);
 }