diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c
index 1007ce58e8b8..1d6bd7705050 100644
--- a/drivers/clk/qcom/clk-rcg2.c
+++ b/drivers/clk/qcom/clk-rcg2.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2013, 2016-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013, 2016-2018, 2020-2021, The Linux Foundation. All rights reserved.
  */
 
 #include <linux/kernel.h>
@@ -950,10 +950,11 @@ static int clk_byte2_determine_rate(struct clk_hw *hw,
 	struct clk_hw *p;
 	unsigned long rate = req->rate;
 
-	if (rate == 0)
+	p = req->best_parent_hw;
+
+	if (!p || rate == 0)
 		return -EINVAL;
 
-	p = req->best_parent_hw;
 	req->best_parent_rate = parent_rate = clk_hw_round_rate(p, rate);
 
 	div = DIV_ROUND_UP((2 * parent_rate), rate) - 1;
@@ -1030,6 +1031,9 @@ static int clk_pixel_determine_rate(struct clk_hw *hw,
 	int delta = 100000;
 	const struct frac_entry *frac = frac_table_pixel;
 
+	if (!req->best_parent_hw)
+		return -EINVAL;
+
 	for (; frac->num; frac++) {
 		request = (req->rate * frac->den) / frac->num;