--- ax99100_spi.c
+++ ax99100_spi.c
@@ -76,7 +76,7 @@ int spi_suspend_count;
 static unsigned int spi_major = 241;
 static unsigned int spi_min_count = 0;
 /* device Class */
-static char *ax_devnode(struct device *dev, umode_t *mode)
+static char *ax_devnode(const struct device *dev, umode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "%s", dev_name(dev));
 }