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Commit a314e4b8 authored by Jagadeesh Kona's avatar Jagadeesh Kona
Browse files

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



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

Change-Id: I30f1b13ee4988286fbd1856f823858dee81fe5a3
Signed-off-by: default avatarJagadeesh Kona <jkona@codeaurora.org>
parent f532a03c

drivers/cpufreq/qcom-cpufreq-hw.c

+8 −2
Original line number Diff line number Diff line
@@ -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;



		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;

}