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Commit b1eba1cd authored by Sujeev Dias's avatar Sujeev Dias Committed by Tony Truong
Browse files

msm: pcie: always recover cfg space during resume 



During linkdown pci host cannot save the config space
prior to suspending the link. If saved_state is null
recover rc config space using shadow recovery.

CRs-Fixed: 2141146
Change-Id: I6c6e817ae2c32d8040853fe22785040480aa76eb
Signed-off-by: default avatarSujeev Dias <sdias@codeaurora.org>
Signed-off-by: default avatarTony Truong <truong@codeaurora.org>
parent 76f60b6d

drivers/pci/host/pci-msm.c

+16 −9
Original line number Diff line number Diff line
@@ -6447,6 +6447,7 @@ static int msm_pcie_pm_resume(struct pci_dev *dev, 
		 dev->bus->number, dev->bus->primary);



	if (!(options & MSM_PCIE_CONFIG_NO_CFG_RESTORE)) {

		if (pcie_dev->saved_state) {

			PCIE_DBG(pcie_dev,

				 "RC%d: entry of PCI framework restore state\n",

				 pcie_dev->rc_idx);
@@ -6458,6 +6459,12 @@ static int msm_pcie_pm_resume(struct pci_dev *dev, 
			PCIE_DBG(pcie_dev,

				 "RC%d: exit of PCI framework restore state\n",

				 pcie_dev->rc_idx);

		} else {

			PCIE_DBG(pcie_dev,

				 "RC%d: restore rc config space using shadow recovery\n",

				 pcie_dev->rc_idx);

			msm_pcie_cfg_recover(pcie_dev, true);

		}

	}



	if (pcie_dev->bridge_found) {