linux-kernel - [PATCH] PCI: always build pci-host-common on ARM64

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Date:   Tue, 14 Feb 2017 22:42:56 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        David Daney <david.daney@...ium.com>,
        Rob Herring <robh@...nel.org>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Tomasz Nowicki <tn@...ihalf.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Christopher Covington <cov@...eaurora.org>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] PCI: always build pci-host-common on ARM64

The Thunder PCI host driver is always built, but it relies on pci_host_common_probe,
so we get a link error here:

drivers/pci/host/pci-thunder-pem.c: In function 'thunder_pem_probe':
drivers/pci/host/pci-thunder-pem.c:412:9: error: implicit declaration of function 'pci_host_common_probe';did you mean 'pci_host_bridge_priv'? [-Werror=implicit-function-declaration]

This adds the common file to the existing hack.

Fixes: ca5ab37b19df ("PCI: Explain ARM64 ACPI/MCFG quirk Kconfig and build strategy")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/pci/host/Makefile | 2 +-
 include/linux/pci-ecam.h  | 3 +--
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/host/Makefile b/drivers/pci/host/Makefile
index bfe3179ae74c..e97d084f10ea 100644
--- a/drivers/pci/host/Makefile
+++ b/drivers/pci/host/Makefile
@@ -39,7 +39,7 @@ obj-$(CONFIG_VMD) += vmd.o
 # config options to be enabled, so we always build these drivers on
 # ARM64 and use internal ifdefs to only build the pieces we need
 # depending on whether ACPI, the DT driver, or both are enabled.
-
+obj-$(CONFIG_ARM64) += pci-host-common.o
 obj-$(CONFIG_ARM64) += pcie-hisi.o
 obj-$(CONFIG_ARM64) += pci-thunder-ecam.o
 obj-$(CONFIG_ARM64) += pci-thunder-pem.o
diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
index f0d2b9451270..ab52692388d1 100644
--- a/include/linux/pci-ecam.h
+++ b/include/linux/pci-ecam.h
@@ -68,9 +68,8 @@ extern struct pci_ecam_ops xgene_v1_pcie_ecam_ops; /* APM X-Gene PCIe v1 */
 extern struct pci_ecam_ops xgene_v2_pcie_ecam_ops; /* APM X-Gene PCIe v2.x */
 #endif
 
-#ifdef CONFIG_PCI_HOST_GENERIC
 /* for DT-based PCI controllers that support ECAM */
 int pci_host_common_probe(struct platform_device *pdev,
 			  struct pci_ecam_ops *ops);
-#endif
+
 #endif
-- 
2.9.0