Re: [PATCH 1/7] pmdomain: arm: Fix -EINVAL from scmi_pd_set_perf_state() on state 0
Mukesh Savaliya <[email protected]>
| Newsgroups | gmane.linux.kernel.spi.devel,gmane.linux.ports.arm.kernel,gmane.linux.power-management.general,gmane.linux.kernel,gmane.linux.ports.arm.msm,gmane.linux.serial,gmane.linux.drivers.i2c |
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| Message-ID | <[email protected]> |
On 8/5/2026 1:27 AM, Praveen Talari wrote: > Currently, scmi_pd_set_perf_state() treats a performance state of 0 as > invalid and returns -EINVAL. As a result, devices attached to SCMI > performance domains can report failures when relinquishing their > performance vote. > > The OPP framework use performance state 0 to indicate that no performance > vote is required. For example, dev_pm_opp_set_rate(dev, 0) is commonly > used (by firmware or linux) when a device is runtime suspended. > > A zero performance state does not require any SCMI performance request > to be sent. Treat it as a no-op and return success instead of reporting > an error. > > Signed-off-by: Praveen Talari <[email protected]> > --- Acked-by : Mukesh Savaliya <[email protected]>