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PCI: Wait for device to become ready after a power management reset 

PCIe r4.0, sec 2.3.1, Request Handling Rules, indicates that a device can
return CRS Completion Status following a D3hot to D0 transition.  Wait
until the device becomes ready in that situation.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Sinan Kaya 2018-02-27 14:14:10 -06:00 committed by Bjorn Helgaas
parent a2758b6b8f
commit abbcf0e2a9
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/pci.c
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@ -4188,7 +4188,7 @@ static int pci_pm_reset(struct pci_dev *dev, int probe)
pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, csr);
pci_dev_d3_sleep(dev);
return 0;
return pci_dev_wait(dev, "PM D3->D0", PCIE_RESET_READY_POLL_MS);
}
void pci_reset_secondary_bus(struct pci_dev *dev)