diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
index 61c872f0f7ca882c6e83b22b07f42948b1987ed6..15b81e5228b5d823455fdc0958ce393dda58cae9 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9322.c
@@ -325,11 +325,6 @@ static struct regmap_bus ili9322_regmap_bus = {
 	.val_format_endian_default = REGMAP_ENDIAN_BIG,
 };
 
-static bool ili9322_volatile_reg(struct device *dev, unsigned int reg)
-{
-	return false;
-}
-
 static bool ili9322_writeable_reg(struct device *dev, unsigned int reg)
 {
 	/* Just register 0 is read-only */
@@ -343,7 +338,6 @@ static const struct regmap_config ili9322_regmap_config = {
 	.val_bits = 8,
 	.max_register = 0x44,
 	.cache_type = REGCACHE_RBTREE,
-	.volatile_reg = ili9322_volatile_reg,
 	.writeable_reg = ili9322_writeable_reg,
 };