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Commit 4e96978e authored by Tony Truong's avatar Tony Truong
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msm: pcie: switch GPIO to sleep state before asserting PERST 



Before asserting PERST, PCIe bus driver should switch GPIO to
sleep state. This will prevent host from missing any events after
the link is off.

Change-Id: Ie57d339da02dde6cbb3c41d2be52ee0602227193
Signed-off-by: default avatarTony Truong <truong@codeaurora.org>
parent c6d522c5

drivers/pci/host/pci-msm.c

+2 −2
Original line number Diff line number Diff line
@@ -6764,12 +6764,12 @@ static int msm_pcie_pm_suspend(struct pci_dev *dev, 
		PCIE_DBG(pcie_dev, "RC%d: PM_Enter_L23 is NOT received\n",

			pcie_dev->rc_idx);



		msm_pcie_disable(pcie_dev, PM_PIPE_CLK | PM_CLK | PM_VREG);



	if (pcie_dev->use_pinctrl && pcie_dev->pins_sleep)

		pinctrl_select_state(pcie_dev->pinctrl,

					pcie_dev->pins_sleep);



	msm_pcie_disable(pcie_dev, PM_PIPE_CLK | PM_CLK | PM_VREG);



	PCIE_DBG(pcie_dev, "RC%d: exit\n", pcie_dev->rc_idx);



	return ret;