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platform/x86: asus-wmi: don't allow eGPU switching if eGPU not connected
Check the ASUS_WMI_DEVID_EGPU_CONNECTED method for eGPU connection before allowing the ASUS_WMI_DEVID_EGPU method to run. Signed-off-by: Luke D. Jones <luke@ljones.dev> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20230630053552.976579-6-luke@ljones.dev Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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@ -693,6 +693,15 @@ static ssize_t egpu_enable_store(struct device *dev,
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if (enable > 1)
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return -EINVAL;
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err = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_EGPU_CONNECTED);
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if (err < 0)
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return err;
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if (err < 1) {
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err = -ENODEV;
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pr_warn("Failed to set egpu disable: %d\n", err);
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return err;
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}
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err = asus_wmi_set_devstate(ASUS_WMI_DEVID_EGPU, enable, &result);
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if (err) {
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pr_warn("Failed to set egpu disable: %d\n", err);
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