cpufreq: exynos5440: Protect OPP search calls with RCU lock
As per the OPP library documentation(Documentation/power/opp.txt) all OPP find/get calls should be protected by RCU locks. Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -120,11 +120,13 @@ static int init_div_table(void)
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int i = 0;
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struct opp *opp;
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rcu_read_lock();
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for (i = 0; freq_tbl[i].frequency != CPUFREQ_TABLE_END; i++) {
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opp = opp_find_freq_exact(dvfs_info->dev,
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freq_tbl[i].frequency * 1000, true);
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if (IS_ERR(opp)) {
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rcu_read_unlock();
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dev_err(dvfs_info->dev,
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"failed to find valid OPP for %u KHZ\n",
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freq_tbl[i].frequency);
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@ -159,6 +161,7 @@ static int init_div_table(void)
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__raw_writel(tmp, dvfs_info->base + XMU_PMU_P0_7 + 4 * i);
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}
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rcu_read_unlock();
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return 0;
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}
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