* [bug report] PM / devfreq: mediatek: Introduce MediaTek CCI devfreq driver
@ 2022-06-13 11:13 Dan Carpenter
0 siblings, 0 replies; only message in thread
From: Dan Carpenter @ 2022-06-13 11:13 UTC (permalink / raw)
To: johnson.wang; +Cc: linux-pm, linux-mediatek
Hello Johnson Wang,
This is a semi-automatic email about new static checker warnings.
The patch 9f3ec0f65421: "PM / devfreq: mediatek: Introduce MediaTek
CCI devfreq driver" from Jun 7, 2022, leads to the following Smatch
complaint:
drivers/devfreq/mtk-cci-devfreq.c:135 mtk_ccifreq_target()
warn: variable dereferenced before check 'drv' (see line 130)
drivers/devfreq/mtk-cci-devfreq.c
129 struct mtk_ccifreq_drv *drv = dev_get_drvdata(dev);
130 struct clk *cci_pll = clk_get_parent(drv->cci_clk);
^^^^^^^^^^^^
Dereference
131 struct dev_pm_opp *opp;
132 unsigned long opp_rate;
133 int voltage, pre_voltage, inter_voltage, target_voltage, ret;
134
135 if (!drv)
^^^^
Checked too late.
136 return -EINVAL;
137
regards,
dan carpenter
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