linux-kernel - [PATCH 5.14 077/432] clk: renesas: rzg2l: Fix off-by-one check in rzg2l_cpg_clk_src_twocell

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Date:   Thu, 16 Sep 2021 17:57:06 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.14 077/432] clk: renesas: rzg2l: Fix off-by-one check in rzg2l_cpg_clk_src_twocell_get()

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

[ Upstream commit 1606e81543f80fc3b1912957cf6d8fa62e40b8e5 ]

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>
Link: https://lore.kernel.org/r/20210617155432.18827-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 e7c59af2a1d8..f894a210de90 100644
--- a/drivers/clk/renesas/renesas-rzg2l-cpg.c
+++ b/drivers/clk/renesas/renesas-rzg2l-cpg.c
@@ -229,7 +229,7 @@ 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);
-- 
2.30.2