[PATCH 6.12.y-cip 01/19] clk: renesas: cpg-mssr: Add number of clock cells check

From: Geert Uytterhoeven <[email protected]>

[ Upstream commit 7f0c422c7fbfd9294ff9321ada0c63561e5c6ea0 ]

The number of clock cells is not validated in the clock provider's
clk_src_get() callback.  Add the missing check.

Signed-off-by: Geert Uytterhoeven <[email protected]>
Reviewed-by: Biju Das <[email protected]>
Link: https://patch.msgid.link/46e010659ffdffd5e3541369f3b65d43ebe236ec.1777562043.git.geert+renesas@glider.be
Signed-off-by: Biju Das <[email protected]>
---
 drivers/clk/renesas/renesas-cpg-mssr.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c b/drivers/clk/renesas/renesas-cpg-mssr.c
index e4d42e24485d..ab4a1263b9fb 100644
--- a/drivers/clk/renesas/renesas-cpg-mssr.c
+++ b/drivers/clk/renesas/renesas-cpg-mssr.c
@@ -378,6 +378,9 @@ struct clk *cpg_mssr_clk_src_twocell_get(struct of_phandle_args *clkspec,
 	struct clk *clk;
 	int range_check;
 
+	if (clkspec->args_count != 2)
+		return ERR_PTR(-EINVAL);
+
 	switch (clkspec->args[0]) {
 	case CPG_CORE:
 		type = "core";
-- 
2.43.0