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cpufreq: scmi: Avoid overflow of target_freq in fast switch

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BugLink: https://bugs.launchpad.net/bugs/2084941

[ Upstream commit 074cffb5020ddcaa5fafcc55655e5da6ebe8c831 ]

Conversion of target_freq to HZ in scmi_cpufreq_fast_switch()
can lead to overflow if the multiplied result is greater than
UINT_MAX, since type of target_freq is unsigned int. Avoid this
overflow by assigning target_freq to unsigned long variable for
converting it to HZ.

Signed-off-by: Jagadeesh Kona <quic_jkona@quicinc.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Jagadeesh Kona
2024-05-20 12:07:32 +05:30
committed by Mehmet Basaran
parent f12e02f660
commit 90c3c1fbe5
1 changed files with 2 additions and 2 deletions
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drivers/cpufreq/scmi-cpufreq.c
+2 -2
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@@ -62,9 +62,9 @@ static unsigned int scmi_cpufreq_fast_switch(struct cpufreq_policy *policy,
unsigned int target_freq)
{
struct scmi_data *priv = policy->driver_data;
unsigned long freq = target_freq;
if (!perf_ops->freq_set(ph, priv->domain_id,
target_freq * 1000, true))
if (!perf_ops->freq_set(ph, priv->domain_id, freq * 1000, true))
return target_freq;
return 0;