Messages in this thread Patch in this message | | | From | Sinan Kaya <> | Subject | [PATCH V3 4/6] PCI: Wait device ready after pci_pm_reset() | Date | Tue, 2 Jan 2018 12:00:21 -0500 |
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Rev 3.1 Sec 2.3.1 Request Handling Rules says a device can issue CRS following a D3hot->D0 transition. Add pci_dev_wait() call to see if device is available before returning.
Signed-off-by: Sinan Kaya <okaya@codeaurora.org> Reviewed-by: Christoph Hellwig <hch@lst.de> --- drivers/pci/pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 736d809..09eae93 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -4116,7 +4116,7 @@ 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) -- 1.9.1
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