Commit 60c8da76 authored by Hongchen Zhang's avatar Hongchen Zhang
Browse files

pci: fix kabi error caused by pm_suspend_target_state 

LoongArch inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I6BWFP



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

fix kabi error caused by pm_suspend_target_state,used only
by loongson devices.

Signed-off-by: default avatarHongchen Zhang <zhanghongchen@loongson.cn>
parent 269d4b06

drivers/pci/pci.c

+10 −2
Original line number Diff line number Diff line
@@ -31,7 +31,9 @@ 
#include <linux/vmalloc.h>

#include <asm/dma.h>

#include <linux/aer.h>

#ifdef CONFIG_MACH_LOONGSON64

#include <linux/suspend.h>

#endif

#include "pci.h"



DEFINE_MUTEX(pci_slot_mutex);
@@ -148,11 +150,15 @@ static bool pci_bridge_d3_disable; 
/* Force bridge_d3 for all PCIe ports */

static bool pci_bridge_d3_force;



#ifdef CONFIG_MACH_LOONGSON64



#ifndef CONFIG_PM_SLEEP

suspend_state_t pm_suspend_target_state;

#define pm_suspend_target_state (PM_SUSPEND_ON)

#endif



#endif



static int __init pcie_port_pm_setup(char *str)

{

	if (!strcmp(str, "off"))
@@ -5756,8 +5762,9 @@ int pcie_set_readrq(struct pci_dev *dev, int rq) 
{

	u16 v;

	int ret;

#ifdef CONFIG_MACH_LOONGSON64

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



#endif

	if (rq < 128 || rq > 4096 || !is_power_of_2(rq))

		return -EINVAL;
@@ -5774,12 +5781,13 @@ int pcie_set_readrq(struct pci_dev *dev, int rq) 
	}



	v = (ffs(rq) - 8) << 12;



#ifdef CONFIG_MACH_LOONGSON64

	if (pm_suspend_target_state == PM_SUSPEND_ON &&

		bridge->no_inc_mrrs) {

		if (rq > pcie_get_readrq(dev))

			return -EINVAL;

	}

#endif



	ret = pcie_capability_clear_and_set_word(dev, PCI_EXP_DEVCTL,

						  PCI_EXP_DEVCTL_READRQ, v);