From 9caea0007601d3bc6debec04f8b4cd6f4c2394be Mon Sep 17 00:00:00 2001
From: Helge Deller <deller@gmx.de>
Date: Sun, 19 Sep 2021 10:36:09 -0700
Subject: [PATCH] parisc: Declare pci_iounmap() parisc version only when
 CONFIG_PCI enabled
Git-commit: 9caea0007601d3bc6debec04f8b4cd6f4c2394be
References: git-fixes
Patch-mainline: v5.15-rc2

Linus noticed odd declaration rules for pci_iounmap() in iomap.h and
pci_iomap.h, where it dependend on either NO_GENERIC_PCI_IOPORT_MAP or
GENERIC_IOMAP when CONFIG_PCI was disabled.

Testing on parisc seems to indicate that we need pci_iounmap() only when
CONFIG_PCI is enabled, so the declaration of pci_iounmap() can be moved
cleanly into pci_iomap.h in sync with the declarations of pci_iomap().

Link: https://lore.kernel.org/all/CAHk-=wjRrh98pZoQ+AzfWmsTZacWxTJKXZ9eKU2X_0+jM=O8nw@mail.gmail.com/
Signed-off-by: Helge Deller <deller@gmx.de>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: 97a29d59fc22 ("[PARISC] fix compile break caused by iomap: make IOPORT/PCI mapping functions conditional")
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Ulrich Teichert <krypton@ulrich-teichert.org>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 arch/parisc/lib/iomap.c         |  4 +++-
 include/asm-generic/iomap.h     | 10 ----------
 include/asm-generic/pci_iomap.h |  3 +++
 3 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/arch/parisc/lib/iomap.c b/arch/parisc/lib/iomap.c
index f03adb1999e7..367f6397bda7 100644
--- a/arch/parisc/lib/iomap.c
+++ b/arch/parisc/lib/iomap.c
@@ -513,12 +513,15 @@ void ioport_unmap(void __iomem *addr)
 	}
 }
 
+#ifdef CONFIG_PCI
 void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
 {
 	if (!INDIRECT_ADDR(addr)) {
 		iounmap(addr);
 	}
 }
+EXPORT_SYMBOL(pci_iounmap);
+#endif
 
 EXPORT_SYMBOL(ioread8);
 EXPORT_SYMBOL(ioread16);
@@ -544,4 +547,3 @@ EXPORT_SYMBOL(iowrite16_rep);
 EXPORT_SYMBOL(iowrite32_rep);
 EXPORT_SYMBOL(ioport_map);
 EXPORT_SYMBOL(ioport_unmap);
-EXPORT_SYMBOL(pci_iounmap);
diff --git a/include/asm-generic/iomap.h b/include/asm-generic/iomap.h
index 9b3eb6d86200..08237ae8b840 100644
--- a/include/asm-generic/iomap.h
+++ b/include/asm-generic/iomap.h
@@ -110,16 +110,6 @@ static inline void __iomem *ioremap_np(phys_addr_t offset, size_t size)
 }
 #endif
 
-#ifdef CONFIG_PCI
-/* Destroy a virtual mapping cookie for a PCI BAR (memory or IO) */
-struct pci_dev;
-extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
-#elif defined(CONFIG_GENERIC_IOMAP)
-struct pci_dev;
-static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
-{ }
-#endif
-
 #include <asm-generic/pci_iomap.h>
 
 #endif
diff --git a/include/asm-generic/pci_iomap.h b/include/asm-generic/pci_iomap.h
index df636c6d8e6c..5a2f9bf53384 100644
--- a/include/asm-generic/pci_iomap.h
+++ b/include/asm-generic/pci_iomap.h
@@ -18,6 +18,7 @@ extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
 extern void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
 					unsigned long offset,
 					unsigned long maxlen);
+extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
 /* Create a virtual mapping cookie for a port on a given PCI device.
  * Do not call this directly, it exists to make it easier for architectures
  * to override */
@@ -50,6 +51,8 @@ static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
 {
 	return NULL;
 }
+static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
+{ }
 #endif
 
 #endif /* __ASM_GENERIC_PCI_IOMAP_H */
-- 
2.35.3