[PATCH V2 4/7] PCI: wait device ready after pci_pm_reset()
From: Sinan Kaya <hidden>
Date: 2017-11-27 06:21:40
Also in:
linux-arm-msm, linux-pci, lkml
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
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 <redacted> --- 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 ed3c3bc..87e4688 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c@@ -3990,7 +3990,7 @@ 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)
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1.9.1