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Message-Id: <20230518084033.508711-1-sukrut.bellary@linux.com>
Date: Thu, 18 May 2023 01:40:33 -0700
From: Sukrut Bellary <sukrut.bellary@...ux.com>
To: MyungJoo Ham <myungjoo.ham@...sung.com>,
Kyungmin Park <kyungmin.park@...sung.com>,
Chanwoo Choi <cw00.choi@...sung.com>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>
Cc: Sukrut Bellary <sukrut.bellary@...ux.com>,
linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org
Subject: [PATCH5b51a54ae2fa1cc8459b68a28b3c8ca7b7203994] PM / devfreq: mtk-cci: Fix variable deferencing before NULL check
smatch warning:
drivers/devfreq/mtk-cci-devfreq.c:135 mtk_ccifreq_target()
warn: variable dereferenced before check 'drv' (see line 130)
This is based on static analysis only. Compilation tested.
Signed-off-by: Sukrut Bellary <sukrut.bellary@...ux.com>
---
drivers/devfreq/mtk-cci-devfreq.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/devfreq/mtk-cci-devfreq.c b/drivers/devfreq/mtk-cci-devfreq.c
index e5458ada5197..6354622eda65 100644
--- a/drivers/devfreq/mtk-cci-devfreq.c
+++ b/drivers/devfreq/mtk-cci-devfreq.c
@@ -127,7 +127,7 @@ static int mtk_ccifreq_target(struct device *dev, unsigned long *freq,
u32 flags)
{
struct mtk_ccifreq_drv *drv = dev_get_drvdata(dev);
- struct clk *cci_pll = clk_get_parent(drv->cci_clk);
+ struct clk *cci_pll;
struct dev_pm_opp *opp;
unsigned long opp_rate;
int voltage, pre_voltage, inter_voltage, target_voltage, ret;
@@ -139,6 +139,7 @@ static int mtk_ccifreq_target(struct device *dev, unsigned long *freq,
return 0;
inter_voltage = drv->inter_voltage;
+ cci_pll = clk_get_parent(drv->cci_clk);
opp_rate = *freq;
opp = devfreq_recommended_opp(dev, &opp_rate, 1);
--
2.34.1
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