[PATCH V2] cpufreq: scmi: Avoid overflow of target_freq in fast switch
Jagadeesh Kona
quic_jkona at quicinc.com
Mon May 27 02:56:49 PDT 2024
On 5/20/2024 2:17 PM, Viresh Kumar wrote:
> On 20-05-24, 12:07, Jagadeesh Kona wrote:
>> 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 at quicinc.com>
>> ---
>> Changes in V2:
>> - Updated freq variable from u64 to unsigned long to keep it
>> consistent with the rate parameter in scmi .freq_set() callback
>> - Link to v1: https://lore.kernel.org/all/20240517070157.19553-1-quic_jkona@quicinc.com/
>> ---
>> drivers/cpufreq/scmi-cpufreq.c | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> Applied. Thanks.
>
Thanks Viresh for the offline update on applying this patch to cpufreq
arm tree. Please help share the git tree details of the same, since we
need them to pick this change in Google ACK and downstream tree.
Thanks,
Jagadeesh
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