Commit b70cfc41 authored by Hongchen Zhang's avatar Hongchen Zhang
Browse files

Revert "PCI: Add quirk for LS7A to avoid reboot failure" 

LoongArch inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7BC4C



--------------------------------

This reverts commit cea488db.

Signed-off-by: default avatarHongchen Zhang <zhanghongchen@loongson.cn>
parent 77566d2b

drivers/pci/controller/pci-loongson.c

+0 −17
Original line number Diff line number Diff line
@@ -115,23 +115,6 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LOONGSON, 
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LOONGSON,

			DEV_PCIE_PORT_2, loongson_mrrs_quirk);



static void loongson_bmaster_quirk(struct pci_dev *pdev)

{

	/*

	 * Some Loongson PCIe ports will cause CPU deadlock if disable

	 * the Bus Master bit during poweroff/reboot.

	 */

	struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus);



	bridge->no_dis_bmaster = 1;

}

DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LOONGSON,

			DEV_PCIE_PORT_0, loongson_bmaster_quirk);

DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LOONGSON,

			DEV_PCIE_PORT_1, loongson_bmaster_quirk);

DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LOONGSON,

			DEV_PCIE_PORT_2, loongson_bmaster_quirk);



static void loongson_pci_pin_quirk(struct pci_dev *pdev)

{

	pdev->pin = 1 + (PCI_FUNC(pdev->devfn) & 3);

drivers/pci/pcie/portdrv_core.c

+1 −0
Original line number Diff line number Diff line
@@ -493,6 +493,7 @@ void pcie_port_device_remove(struct pci_dev *dev) 
{

	device_for_each_child(&dev->dev, NULL, remove_iter);

	pci_free_irq_vectors(dev);

	pci_disable_device(dev);

}



/**

drivers/pci/pcie/portdrv_pci.c

+1 −19
Original line number Diff line number Diff line
@@ -148,24 +148,6 @@ static void pcie_portdrv_remove(struct pci_dev *dev) 
	}



	pcie_port_device_remove(dev);



	pci_disable_device(dev);

}



static void pcie_portdrv_shutdown(struct pci_dev *dev)

{

	struct pci_host_bridge *bridge = pci_find_host_bridge(dev->bus);



	if (pci_bridge_d3_possible(dev)) {

		pm_runtime_forbid(&dev->dev);

		pm_runtime_get_noresume(&dev->dev);

		pm_runtime_dont_use_autosuspend(&dev->dev);

	}



	pcie_port_device_remove(dev);



	if (!bridge->no_dis_bmaster)

		pci_disable_device(dev);

}



static pci_ers_result_t pcie_portdrv_error_detected(struct pci_dev *dev,
@@ -236,7 +218,7 @@ static struct pci_driver pcie_portdriver = { 


	.probe		= pcie_portdrv_probe,

	.remove		= pcie_portdrv_remove,

	.shutdown	= pcie_portdrv_shutdown,

	.shutdown	= pcie_portdrv_remove,



	.err_handler	= &pcie_portdrv_err_handler,

include/linux/pci.h

+0 −1
Original line number Diff line number Diff line
@@ -575,7 +575,6 @@ struct pci_host_bridge { 
	unsigned int	ignore_reset_delay:1;	/* For entire hierarchy */

	unsigned int	no_ext_tags:1;		/* No Extended Tags */

	unsigned int	no_inc_mrrs:1;		/* No Increase MRRS */

	unsigned int	no_dis_bmaster:1;	/* No Disable Bus Master */

	unsigned int	native_aer:1;		/* OS may use PCIe AER */

	unsigned int	native_pcie_hotplug:1;	/* OS may use PCIe hotplug */

	unsigned int	native_shpc_hotplug:1;	/* OS may use SHPC hotplug */