diff options
| author |   Andrzej Hajda <a.hajda@samsung.com> | 2015-12-30 12:18:42 +0100 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-01-05 02:01:38 +0100 |
| commit | 929ca89c305a6ed7a4149115be99af6d73c36918 (patch) | |
| tree | f668f2086b6e2303f4bc8f5e87f03c8f41e8cc07 /drivers/cpufreq/cpufreq-dt.c | |
| parent | cpufreq: governor: Fix negative idle_time when configured with CONFIG_HZ_PERIODIC (diff) | |
| download | wireguard-linux-929ca89c305a6ed7a4149115be99af6d73c36918.tar.xz wireguard-linux-929ca89c305a6ed7a4149115be99af6d73c36918.zip | |
cpufreq-dt: fix handling regulator_get_voltage() result
The function can return negative values so it should be assigned
to signed type.
The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci.
Link: http://permalink.gmane.org/gmane.linux.kernel/2038576
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/cpufreq-dt.c')
| -rw-r--r-- | drivers/cpufreq/cpufreq-dt.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index 1ceece9d6711..9bc37c437874 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -50,7 +50,8 @@ static int set_target(struct cpufreq_policy *policy, unsigned int index) struct private_data *priv = policy->driver_data; struct device *cpu_dev = priv->cpu_dev; struct regulator *cpu_reg = priv->cpu_reg; - unsigned long volt = 0, volt_old = 0, tol = 0; + unsigned long volt = 0, tol = 0; + int volt_old = 0; unsigned int old_freq, new_freq; long freq_Hz, freq_exact; int ret; @@ -83,7 +84,7 @@ static int set_target(struct cpufreq_policy *policy, unsigned int index) opp_freq / 1000, volt); } - dev_dbg(cpu_dev, "%u MHz, %ld mV --> %u MHz, %ld mV\n", + dev_dbg(cpu_dev, "%u MHz, %d mV --> %u MHz, %ld mV\n", old_freq / 1000, (volt_old > 0) ? volt_old / 1000 : -1, new_freq / 1000, volt ? volt / 1000 : -1); |