linux-kernel - [PATCH] PCI: export pci_find_host

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Date:   Sun, 18 Oct 2020 23:14:53 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        kernel test robot <lkp@...el.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Paul Burton <paulburton@...nel.org>,
        linux-mips@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        linux-pci@...r.kernel.org
Subject: [PATCH] PCI: export pci_find_host_bridge() to fix MFD build error

Fix a build error in drivers/mfd/ioc.o by exporting
pci_find_host_bridge().

ERROR: modpost: "pci_find_host_bridge" [drivers/mfd/ioc3.ko] undefined!

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: Paul Burton <paulburton@...nel.org>
Cc: linux-mips@...r.kernel.org
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: linux-pci@...r.kernel.org
---
 drivers/pci/host-bridge.c |    2 ++
 1 file changed, 2 insertions(+)

--- linux-next-20201016.orig/drivers/pci/host-bridge.c
+++ linux-next-20201016/drivers/pci/host-bridge.c
@@ -4,6 +4,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/export.h>
 #include <linux/pci.h>
 #include <linux/module.h>
 
@@ -23,6 +24,7 @@ struct pci_host_bridge *pci_find_host_br
 
 	return to_pci_host_bridge(root_bus->bridge);
 }
+EXPORT_SYMBOL(pci_find_host_bridge);
 
 struct device *pci_get_host_bridge_device(struct pci_dev *dev)
 {