Commit 757072ab authored by Loic Poulain's avatar Loic Poulain Committed by Manivannan Sadhasivam
Browse files

bus: mhi: pci_generic: Implement PCI shutdown callback 



Deinit the device on shutdown to halt MHI/PCI operation on device
side. This change fixes floating device state with some hosts that
do not fully shutdown PCIe device when rebooting.

Signed-off-by: default avatarLoic Poulain <loic.poulain@linaro.org>
Reviewed-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/1616169037-7969-1-git-send-email-loic.poulain@linaro.org


Signed-off-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
parent 6731fefd

drivers/bus/mhi/pci_generic.c

+7 −0
Original line number Diff line number Diff line
@@ -641,6 +641,12 @@ static void mhi_pci_remove(struct pci_dev *pdev) 
	mhi_unregister_controller(mhi_cntrl);

}



static void mhi_pci_shutdown(struct pci_dev *pdev)

{

	mhi_pci_remove(pdev);

	pci_set_power_state(pdev, PCI_D3hot);

}



static void mhi_pci_reset_prepare(struct pci_dev *pdev)

{

	struct mhi_pci_device *mhi_pdev = pci_get_drvdata(pdev);
@@ -857,6 +863,7 @@ static struct pci_driver mhi_pci_driver = { 
	.id_table	= mhi_pci_id_table,

	.probe		= mhi_pci_probe,

	.remove		= mhi_pci_remove,

	.shutdown	= mhi_pci_shutdown,

	.err_handler	= &mhi_pci_err_handler,

	.driver.pm	= &mhi_pci_pm_ops

};