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Add workaround for marazmista/radeon-profile#151 #236

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FMeinicke
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If the PC returns from sleep/hibernation we can enforce restoration of
the correct fan control mode by checking if the correct value is set for
pwm_enable and restore the value if necessary

If the PC returns from sleep/hibernation we can enforce restoration of
the correct fan control mode by checking if the correct value is set for
pwm_enable and restore the value if necessary
radeon-profile/gpu.cpp Outdated Show resolved Hide resolved
// If the PC is sent to sleep (or hibernate) it can happen that PWM is
// disabled (by the OS..?) and that we have to re-enable it, if needed,
// after returning from sleep
static QFile pwmEnableFile(getDriverFiles().hwmonAttributes.pwm1_enable);
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It can be without static I think

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It could definitely be non-static. But I thought since the file is always the same it would suffice to construct the QFile object once and re-use it after that to gain a bit of performance (because this function is called quite frequently if I'm correct).

But if you prefer to have it non-static it's no problem for me.

To get around the issue that PWM isn't restored after hibernation it's
enough to check the pwm_enable file - we don't need to also store the
current PWM state into a variable.
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