From mboxrd@z Thu Jan 1 00:00:00 1970 From: okaya@codeaurora.org (Sinan Kaya) Date: Tue, 2 Jan 2018 12:00:21 -0500 Subject: [PATCH V3 4/6] PCI: Wait device ready after pci_pm_reset() In-Reply-To: <1514912423-13341-1-git-send-email-okaya@codeaurora.org> References: <1514912423-13341-1-git-send-email-okaya@codeaurora.org> Message-ID: <1514912423-13341-5-git-send-email-okaya@codeaurora.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Reviewed-by: Christoph Hellwig --- 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