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Message-Id: <20230801031314.3820228-1-jindong.yue@nxp.com>
Date:   Tue,  1 Aug 2023 11:13:14 +0800
From:   Jindong Yue <jindong.yue@....com>
To:     lpieralisi@...nel.org, kw@...ux.com, robh@...nel.org,
        bhelgaas@...gle.com, hongxing.zhu@....com, l.stach@...gutronix.de
Cc:     linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        jindong.yue@....com
Subject: [PATCH v2] PCI: imx6: Support building it as a module

Change config from bool to tristate and add MODULE_LICENSE to support
building pci-imx6 as a module.

Also export dw_pcie_ep_raise_msix_irq() to fix build error when
CONFIG_PCIE_DW_EP=y is set:
  ERROR: modpost: "dw_pcie_ep_raise_msix_irq"
  [drivers/pci/controller/dwc/pci-imx6.ko] undefined!
This error was found by kernel test robot <lkp@...el.com>.

Signed-off-by: Jindong Yue <jindong.yue@....com>
---
v1 -> v2:
  Export dw_pcie_ep_raise_msix_irq to fix build error
---
 drivers/pci/controller/dwc/Kconfig              | 6 +++---
 drivers/pci/controller/dwc/pci-imx6.c           | 1 +
 drivers/pci/controller/dwc/pcie-designware-ep.c | 1 +
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
index ab96da43e0c2..db96cff8b11f 100644
--- a/drivers/pci/controller/dwc/Kconfig
+++ b/drivers/pci/controller/dwc/Kconfig
@@ -71,10 +71,10 @@ config PCIE_BT1
 	  in host mode. It's based on the Synopsys DWC PCIe v4.60a IP-core.
 
 config PCI_IMX6
-	bool
+	tristate
 
 config PCI_IMX6_HOST
-	bool "Freescale i.MX6/7/8 PCIe controller (host mode)"
+	tristate "Freescale i.MX6/7/8 PCIe controller (host mode)"
 	depends on ARCH_MXC || COMPILE_TEST
 	depends on PCI_MSI
 	select PCIE_DW_HOST
@@ -86,7 +86,7 @@ config PCI_IMX6_HOST
 	  DesignWare core functions to implement the driver.
 
 config PCI_IMX6_EP
-	bool "Freescale i.MX6/7/8 PCIe controller (endpoint mode)"
+	tristate "Freescale i.MX6/7/8 PCIe controller (endpoint mode)"
 	depends on ARCH_MXC || COMPILE_TEST
 	depends on PCI_ENDPOINT
 	select PCIE_DW_EP
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 235ead4c807f..1050149ac9ad 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1609,3 +1609,4 @@ static int __init imx6_pcie_init(void)
 	return platform_driver_register(&imx6_pcie_driver);
 }
 device_initcall(imx6_pcie_init);
+MODULE_LICENSE("GPL");
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index f9182f8d552f..ec1b024a758e 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -609,6 +609,7 @@ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(dw_pcie_ep_raise_msix_irq);
 
 void dw_pcie_ep_exit(struct dw_pcie_ep *ep)
 {
-- 
2.36.0

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