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| author | Paul Walmsley <pwalmsley@nvidia.com> | 2013-11-25 18:01:18 -0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-12-06 23:19:19 +0100 |
| commit | 2209b0c964c7c402b07d0df6fcfbecf8ff53db30 (patch) | |
| tree | 5af8570bb1383f41ce2f5018280e3f9b9dfdf64f /drivers | |
| parent | 374b105797c3d4f29c685f3be535c35f5689b30e (diff) | |
| download | talos-obmc-linux-2209b0c964c7c402b07d0df6fcfbecf8ff53db30.tar.gz talos-obmc-linux-2209b0c964c7c402b07d0df6fcfbecf8ff53db30.zip | |
cpufreq: cpufreq-cpu0: clk_round_rate() can return a zero upon error
Treat both negative and zero return values from clk_round_rate()
as errors. This is needed since subsequent patches will convert
clk_round_rate()'s return value to be an unsigned type, rather
than a signed type, since some clock sources can generate rates
higher than (2^31)-1 Hz.
Eventually, when calling clk_round_rate(), only a return value of
zero will be considered a error. All other values will be
considered valid rates. The comparison against values less than
0 is kept to preserve the correct behavior in the meantime.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/cpufreq/cpufreq-cpu0.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c index d4585ce2346c..0faf756f6197 100644 --- a/drivers/cpufreq/cpufreq-cpu0.c +++ b/drivers/cpufreq/cpufreq-cpu0.c @@ -44,7 +44,7 @@ static int cpu0_set_target(struct cpufreq_policy *policy, unsigned int index) int ret; freq_Hz = clk_round_rate(cpu_clk, freq_table[index].frequency * 1000); - if (freq_Hz < 0) + if (freq_Hz <= 0) freq_Hz = freq_table[index].frequency * 1000; freq_exact = freq_Hz; |
