clk: qcom: Fix null pointer exception

Add null pointer check before dereferencing pointers.

Change-Id: I9d96a3d0e7d00ffc2c2eb83a0d2384a21fe994ae
Signed-off-by: Amit Nischal <anischal@codeaurora.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c
index c9ba7f97eebe..632d0f4ac9c1 100644
--- a/drivers/clk/qcom/clk-rcg2.c
+++ b/drivers/clk/qcom/clk-rcg2.c
@@ -580,6 +580,9 @@ static int __clk_rcg2_set_rate(struct clk_hw *hw, unsigned long rate)
 			rcg->curr_index = 0;
 		else {
 			f = qcom_find_freq(rcg->freq_tbl, rcg->current_freq);
+			if (!f)
+				return -EINVAL;
+
 			rcg->curr_index = qcom_find_src_index(hw,
 						rcg->parent_map, f->src);