[PATCH v2] s390: provide default ioremap and iounmap declaration

From: Logan Gunthorpe
Date: Mon May 29 2017 - 15:13:20 EST


Move the CONFIG_PCI device so that ioremap and iounmap are always
available. This looks safe as there's nothing PCI specific in the
implementation of these functions.

I have designs to use these functions in scatterlist.c where they'd likely
never be called without CONFIG_PCI set, but this is needed to compile
such changes.

Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
cc: Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
---

v2 of this patch is changed to simply move the CONFIG_PCI #ifdef
to expose only a single set of functions as suggested by Heiko
Carstens.

arch/s390/include/asm/io.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h
index 437e9af96688..904e4b3af95d 100644
--- a/arch/s390/include/asm/io.h
+++ b/arch/s390/include/asm/io.h
@@ -25,8 +25,6 @@ void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);

#define IO_SPACE_LIMIT 0

-#ifdef CONFIG_PCI
-
#define ioremap_nocache(addr, size) ioremap(addr, size)
#define ioremap_wc ioremap_nocache
#define ioremap_wt ioremap_nocache
@@ -49,6 +47,8 @@ static inline void ioport_unmap(void __iomem *p)
{
}

+#ifdef CONFIG_PCI
+
/*
* s390 needs a private implementation of pci_iomap since ioremap with its
* offset parameter isn't sufficient. That's because BAR spaces are not
--
2.11.0