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cpufreq: qcom-cpufreq-hw: Fix possible NULL pointer dereferences

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Add checks to properly handle and fix possible NULL pointer
dereferences and avoid usage of uninitialized variables.

Change-Id: I30f1b13ee4988286fbd1856f823858dee81fe5a3
Signed-off-by: Jagadeesh Kona <jkona@codeaurora.org>
This commit is contained in:
Jagadeesh Kona 2020-09-14 10:03:57 +05:30
commit a314e4b894
1 changed files with 8 additions and 2 deletions
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10
drivers/cpufreq/qcom-cpufreq-hw.c
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@ -407,6 +407,8 @@ static int qcom_cpufreq_hw_read_lut(struct platform_device *pdev,
cpu = cpumask_first(&c->related_cpus);
prev_cc = 0;
for (i = 0; i < lut_max_entries; i++) {
data = readl_relaxed(c->base + offsets[REG_FREQ_LUT] +
i * lut_row_size);
@ -440,11 +442,15 @@ static int qcom_cpufreq_hw_read_lut(struct platform_device *pdev,
prev_cc = core_count;
prev_freq = freq;
dev_pm_opp_add(get_cpu_device(cpu), freq * 1000, volt);
if (get_cpu_device(cpu))
dev_pm_opp_add(get_cpu_device(cpu), freq * 1000, volt);
}
c->table[i].frequency = CPUFREQ_TABLE_END;
dev_pm_opp_set_sharing_cpus(get_cpu_device(cpu), &c->related_cpus);
if (get_cpu_device(cpu))
dev_pm_opp_set_sharing_cpus(get_cpu_device(cpu),
&c->related_cpus);
return 0;
}