linux-kernel - [PATCH] clk: renesas: renesas-rzg2l-cpg: Fix off-by-one check in rzg2l_cpg_clk_src_twocell

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Date:   Thu, 17 Jun 2021 16:54:32 +0100
From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     Biju Das <biju.das.jz@...renesas.com>,
        Prabhakar <prabhakar.csengg@...il.com>,
        linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH] clk: renesas: renesas-rzg2l-cpg: Fix off-by-one check in rzg2l_cpg_clk_src_twocell_get()

Fix clock index out of range check for module clocks in
rzg2l_cpg_clk_src_twocell_get().

Fixes: ef3c613ccd68 ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC")
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 drivers/clk/renesas/renesas-rzg2l-cpg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/renesas/renesas-rzg2l-cpg.c b/drivers/clk/renesas/renesas-rzg2l-cpg.c
index 49188f2a341a..0007cce1531e 100644
--- a/drivers/clk/renesas/renesas-rzg2l-cpg.c
+++ b/drivers/clk/renesas/renesas-rzg2l-cpg.c
@@ -221,7 +221,7 @@ static struct clk
 
 	case CPG_MOD:
 		type = "module";
-		if (clkidx > priv->num_mod_clks) {
+		if (clkidx >= priv->num_mod_clks) {
 			dev_err(dev, "Invalid %s clock index %u\n", type,
 				clkidx);
 			return ERR_PTR(-EINVAL);
-- 
2.17.1