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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Paul Cercueil <paul@crapouillou.net>,
        kbuild test robot <lkp@intel.com>,
        Dan Carpenter <dan.carpenter@oracle.com>,
        Stephen Boyd <sboyd@kernel.org>
Subject: [PATCH 5.4 199/232] clk: ingenic/jz4770: Exit with error if CGU init failed
Date:   Thu, 16 Apr 2020 15:24:53 +0200
Message-Id: <20200416131340.119884887@linuxfoundation.org>
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References: <20200416131316.640996080@linuxfoundation.org>
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From: Paul Cercueil <paul@crapouillou.net>

commit c067b46d731a764fc46ecc466c2967088c97089e upstream.

Exit jz4770_cgu_init() if the 'cgu' pointer we get is NULL, since the
pointer is passed as argument to functions later on.

Fixes: 7a01c19007ad ("clk: Add Ingenic jz4770 CGU driver")
Cc: stable@vger.kernel.org
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lkml.kernel.org/r/20200213161952.37460-1-paul@crapouillou.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/clk/ingenic/jz4770-cgu.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/clk/ingenic/jz4770-cgu.c
+++ b/drivers/clk/ingenic/jz4770-cgu.c
@@ -432,8 +432,10 @@ static void __init jz4770_cgu_init(struc
 
 	cgu = ingenic_cgu_new(jz4770_cgu_clocks,
 			      ARRAY_SIZE(jz4770_cgu_clocks), np);
-	if (!cgu)
+	if (!cgu) {
 		pr_err("%s: failed to initialise CGU\n", __func__);
+		return;
+	}
 
 	retval = ingenic_cgu_register_clocks(cgu);
 	if (retval)