1 files changed, 21 insertions, 20 deletions

diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index 896301788e9d..1e1fea4d959b 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -67,7 +67,7 @@
 
 static struct hw_pci dw_pci;
 
-unsigned long global_io_offset;
+static unsigned long global_io_offset;
 
 static inline struct pcie_port *sys_to_pcie(struct pci_sys_data *sys)
 {
@@ -118,8 +118,8 @@ static inline void dw_pcie_writel_rc(struct pcie_port *pp, u32 val, u32 reg)
 		writel(val, pp->dbi_base + reg);
 }
 
-int dw_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
-				u32 *val)
+static int dw_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
+			       u32 *val)
 {
 	int ret;
 
@@ -131,8 +131,8 @@ int dw_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
 	return ret;
 }
 
-int dw_pcie_wr_own_conf(struct pcie_port *pp, int where, int size,
-				u32 val)
+static int dw_pcie_wr_own_conf(struct pcie_port *pp, int where, int size,
+			       u32 val)
 {
 	int ret;
 
@@ -157,7 +157,7 @@ static struct irq_chip dw_msi_irq_chip = {
 void dw_handle_msi_irq(struct pcie_port *pp)
 {
 	unsigned long val;
-	int i, pos;
+	int i, pos, irq;
 
 	for (i = 0; i < MAX_MSI_CTRLS; i++) {
 		dw_pcie_rd_own_conf(pp, PCIE_MSI_INTR0_STATUS + i * 12, 4,
@@ -165,8 +165,9 @@ void dw_handle_msi_irq(struct pcie_port *pp)
 		if (val) {
 			pos = 0;
 			while ((pos = find_next_bit(&val, 32, pos)) != 32) {
-				generic_handle_irq(pp->msi_irq_start
-					+ (i * 32) + pos);
+				irq = irq_find_mapping(pp->irq_domain,
+						i * 32 + pos);
+				generic_handle_irq(irq);
 				pos++;
 			}
 		}
@@ -237,9 +238,8 @@ static int assign_irq(int no_irqs, struct msi_desc *desc, int *pos)
 		}
 	}
 
-	irq = (pp->msi_irq_start + pos0);
-
-	if ((irq + no_irqs) > (pp->msi_irq_start + MAX_MSI_IRQS-1))
+	irq = irq_find_mapping(pp->irq_domain, pos0);
+	if (!irq)
 		goto no_valid_irq;
 
 	i = 0;
@@ -270,6 +270,7 @@ static void clear_irq(unsigned int irq)
 	struct irq_desc *desc;
 	struct msi_desc *msi;
 	struct pcie_port *pp;
+	struct irq_data *data = irq_get_irq_data(irq);
 
 	/* get the port structure */
 	desc = irq_to_desc(irq);
@@ -280,7 +281,7 @@ static void clear_irq(unsigned int irq)
 		return;
 	}
 
-	pos = irq - pp->msi_irq_start;
+	pos = data->hwirq;
 
 	irq_free_desc(irq);
 
@@ -371,8 +372,7 @@ int __init dw_pcie_host_init(struct pcie_port *pp)
 	struct of_pci_range range;
 	struct of_pci_range_parser parser;
 	u32 val;
-
-	struct irq_domain *irq_domain;
+	int i;
 
 	if (of_pci_range_parser_init(&parser, np)) {
 		dev_err(pp->dev, "missing ranges property\n");
@@ -441,15 +441,16 @@ int __init dw_pcie_host_init(struct pcie_port *pp)
 	}
 
 	if (IS_ENABLED(CONFIG_PCI_MSI)) {
-		irq_domain = irq_domain_add_linear(pp->dev->of_node,
+		pp->irq_domain = irq_domain_add_linear(pp->dev->of_node,
 					MAX_MSI_IRQS, &msi_domain_ops,
 					&dw_pcie_msi_chip);
-		if (!irq_domain) {
+		if (!pp->irq_domain) {
 			dev_err(pp->dev, "irq domain init failed\n");
 			return -ENXIO;
 		}
 
-		pp->msi_irq_start = irq_find_mapping(irq_domain, 0);
+		for (i = 0; i < MAX_MSI_IRQS; i++)
+			irq_create_mapping(pp->irq_domain, i);
 	}
 
 	if (pp->ops->host_init)
@@ -667,7 +668,7 @@ static struct pci_ops dw_pcie_ops = {
 	.write = dw_pcie_wr_conf,
 };
 
-int dw_pcie_setup(int nr, struct pci_sys_data *sys)
+static int dw_pcie_setup(int nr, struct pci_sys_data *sys)
 {
 	struct pcie_port *pp;
 
@@ -690,7 +691,7 @@ int dw_pcie_setup(int nr, struct pci_sys_data *sys)
 	return 1;
 }
 
-struct pci_bus *dw_pcie_scan_bus(int nr, struct pci_sys_data *sys)
+static struct pci_bus *dw_pcie_scan_bus(int nr, struct pci_sys_data *sys)
 {
 	struct pci_bus *bus;
 	struct pcie_port *pp = sys_to_pcie(sys);
@@ -707,7 +708,7 @@ struct pci_bus *dw_pcie_scan_bus(int nr, struct pci_sys_data *sys)
 	return bus;
 }
 
-int dw_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+static int dw_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	struct pcie_port *pp = sys_to_pcie(dev->bus->sysdata);