linux-kernel - [PATCH 03/20] ia64: introduce arch

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Date:	Fri, 09 Oct 2015 18:15:53 -0400
From:	Dan Williams <dan.j.williams@...el.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-arch@...r.kernel.org,
	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	Tony Luck <tony.luck@...el.com>,
	linux-arm-kernel@...ts.infradead.org, Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 03/20] ia64: introduce arch_memremap()

In preparation for removing ioremap_cache() introduce arch_memremap()
for ia64.  Given that ia64 does not allow external control for caching
types, this simply aliases arch_memremap() with the ia64 ioremap()
implementation.

Cc: Arnd Bergmann <arnd@...db.de>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Ross Zwisler <ross.zwisler@...ux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
---
 arch/ia64/Kconfig      |    1 +
 arch/ia64/mm/ioremap.c |   10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index eb0249e37981..b39bab1da7dd 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -52,6 +52,7 @@ config IA64
 	select HAVE_MOD_ARCH_SPECIFIC
 	select MODULES_USE_ELF_RELA
 	select ARCH_USE_CMPXCHG_LOCKREF
+	select ARCH_HAS_MEMREMAP
 	select HAVE_ARCH_AUDITSYSCALL
 	default y
 	help
diff --git a/arch/ia64/mm/ioremap.c b/arch/ia64/mm/ioremap.c
index 43964cde6214..53a1faa0e5da 100644
--- a/arch/ia64/mm/ioremap.c
+++ b/arch/ia64/mm/ioremap.c
@@ -101,6 +101,16 @@ ioremap (unsigned long phys_addr, unsigned long size)
 }
 EXPORT_SYMBOL(ioremap);
 
+/*
+ * Cache mapping-type is determined internal to ioremap and can't be
+ * externally specified
+ */
+void *arch_memremap(resource_size_t offset, size_t size, unsigned long flags)
+{
+	return (void __force *) ioremap(offset, size);
+}
+EXPORT_SYMBOL(arch_memremap);
+
 void __iomem *
 ioremap_nocache (unsigned long phys_addr, unsigned long size)
 {

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