drm/radeon: wire up a pci shutdown callback
Normally on shutdown or reboot we don't care about necessarily making sure the hw is in a good state because the system is about to be powered down or reset. However, after a shutdown or reboot in a VM, it's best to tear down the hw properly otherwise there can be problems with the next VM use. Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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61e113067b
Коммит
a801abe477
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@ -639,7 +639,7 @@ void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
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* Used at driver startup.
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* Returns true if virtual or false if not.
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*/
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static bool radeon_device_is_virtual(void)
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bool radeon_device_is_virtual(void)
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{
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#ifdef CONFIG_X86
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return boot_cpu_has(X86_FEATURE_HYPERVISOR);
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@ -310,6 +310,8 @@ MODULE_DEVICE_TABLE(pci, pciidlist);
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static struct drm_driver kms_driver;
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bool radeon_device_is_virtual(void);
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static int radeon_kick_out_firmware_fb(struct pci_dev *pdev)
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{
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struct apertures_struct *ap;
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@ -363,6 +365,16 @@ radeon_pci_remove(struct pci_dev *pdev)
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drm_put_dev(dev);
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}
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static void
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radeon_pci_shutdown(struct pci_dev *pdev)
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{
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/* if we are running in a VM, make sure the device
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* torn down properly on reboot/shutdown
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*/
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if (radeon_device_is_virtual())
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radeon_pci_remove(pdev);
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}
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static int radeon_pmops_suspend(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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@ -583,6 +595,7 @@ static struct pci_driver radeon_kms_pci_driver = {
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.id_table = pciidlist,
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.probe = radeon_pci_probe,
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.remove = radeon_pci_remove,
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.shutdown = radeon_pci_shutdown,
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.driver.pm = &radeon_pm_ops,
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};
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