From 0905a4c0bc4259f56efd12496b445b26d53650fa Mon Sep 17 00:00:00 2001
From: Tao Huang <huangtao@rock-chips.com>
Date: Sat, 16 Apr 2022 16:53:32 +0800
Subject: [PATCH] PCI: rockchip: dw: Fix module building

dw_pcie_write_dbi2() is not export.
irq_set_affinity() is not export before v5.14.

Signed-off-by: Tao Huang <huangtao@rock-chips.com>
Change-Id: I780ed626c1b99f1bd7af7798582a62235003fbf6
---
 drivers/pci/controller/dwc/pcie-dw-rockchip.c | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-dw-rockchip.c b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
index 462b8373bf13..5e6d69ac3892 100644
--- a/drivers/pci/controller/dwc/pcie-dw-rockchip.c
+++ b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
@@ -40,6 +40,7 @@
 #include <linux/signal.h>
 #include <linux/types.h>
 #include <linux/uaccess.h>
+#include <linux/version.h>
 #include <linux/pci-epf.h>
 
 #include "pcie-designware.h"
@@ -859,6 +860,22 @@ static int rk_pci_find_resbar_capability(struct rk_pcie *rk_pcie)
 	return 0;
 }
 
+#ifdef MODULE
+void dw_pcie_write_dbi2(struct dw_pcie *pci, u32 reg, size_t size, u32 val)
+{
+	int ret;
+
+	if (pci->ops && pci->ops->write_dbi2) {
+		pci->ops->write_dbi2(pci, pci->dbi_base2, reg, size, val);
+		return;
+	}
+
+	ret = dw_pcie_write(pci->dbi_base2 + reg, size, val);
+	if (ret)
+		dev_err(pci->dev, "write DBI address failed\n");
+}
+#endif
+
 static int rk_pcie_ep_set_bar_flag(struct rk_pcie *rk_pcie, enum pci_barno barno, int flags)
 {
 	enum pci_barno bar = barno;
@@ -1601,7 +1618,11 @@ static int rk_pcie_irq_set_affinity(struct irq_data *d,
 	if (cpu >= nr_cpu_ids)
 		return -EINVAL;
 
+#if defined(MODULE) && (LINUX_VERSION_CODE < KERNEL_VERSION(5, 14, 0))
+	irq_set_affinity_hint(priv->legacy_parent_irq, cpumask_of(cpu));
+#else
 	irq_set_affinity(priv->legacy_parent_irq, cpumask_of(cpu));
+#endif
 	irq_data_update_effective_affinity(d, cpumask_of(cpu));
 
 	return IRQ_SET_MASK_OK_DONE;