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| author | Amit Daniel Kachhap <amit.daniel@samsung.com> | 2013-04-22 00:24:37 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-04-22 00:24:37 +0200 |
| commit | 70eb0855b2f8fcf61f9f47626b9fa70e7b45ab06 (patch) | |
| tree | d9575a15b953827d0b01dde943c051ecde938ab3 /drivers/cpufreq/exynos5440-cpufreq.c | |
| parent | c77896693da9ad75bd999fd86dd81a3da747e267 (diff) | |
| download | linux-70eb0855b2f8fcf61f9f47626b9fa70e7b45ab06.tar.gz linux-70eb0855b2f8fcf61f9f47626b9fa70e7b45ab06.tar.bz2 linux-70eb0855b2f8fcf61f9f47626b9fa70e7b45ab06.zip | |
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>
Diffstat (limited to 'drivers/cpufreq/exynos5440-cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/exynos5440-cpufreq.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c index ead7ed43e238..0c74018eda47 100644 --- a/drivers/cpufreq/exynos5440-cpufreq.c +++ b/drivers/cpufreq/exynos5440-cpufreq.c @@ -120,11 +120,13 @@ static int init_div_table(void) int i = 0; struct opp *opp; + rcu_read_lock(); for (i = 0; freq_tbl[i].frequency != CPUFREQ_TABLE_END; i++) { opp = opp_find_freq_exact(dvfs_info->dev, freq_tbl[i].frequency * 1000, true); if (IS_ERR(opp)) { + rcu_read_unlock(); dev_err(dvfs_info->dev, "failed to find valid OPP for %u KHZ\n", freq_tbl[i].frequency); @@ -159,6 +161,7 @@ static int init_div_table(void) __raw_writel(tmp, dvfs_info->base + XMU_PMU_P0_7 + 4 * i); } + rcu_read_unlock(); return 0; } |