In preparation for removing ioremap_cache() introduce arch_memremap() for sh. This simply enforces that attempts to establish writethrough mappings fail rather than silently fallback to uncached.
Cc: Arnd Bergmann <[email protected]> Cc: Ross Zwisler <[email protected]> Signed-off-by: Dan Williams <[email protected]> --- arch/sh/Kconfig | 1 + arch/sh/mm/ioremap.c | 9 +++++++++ 2 files changed, 10 insertions(+) diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index d514df7e04dd..b5801ae0e952 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -54,6 +54,7 @@ config SUPERH32 def_bool ARCH = "sh" select HAVE_KPROBES select HAVE_KRETPROBES + select ARCH_HAS_MEMREMAP select HAVE_IOREMAP_PROT if MMU && !X2TLB select HAVE_FUNCTION_TRACER select HAVE_FTRACE_MCOUNT_RECORD diff --git a/arch/sh/mm/ioremap.c b/arch/sh/mm/ioremap.c index 0c99ec2e7ed8..ce3819273368 100644 --- a/arch/sh/mm/ioremap.c +++ b/arch/sh/mm/ioremap.c @@ -86,6 +86,15 @@ __ioremap_caller(phys_addr_t phys_addr, unsigned long size, } EXPORT_SYMBOL(__ioremap_caller); +void *arch_memremap(resource_size_t offset, size_t size, unsigned long flags) +{ + if ((flags & MEMREMAP_WB) == 0) + return NULL; + + return (void __force *) __ioremap_mode(offset, size, PAGE_KERNEL); +} +EXPORT_SYMBOL(arch_memremap); + /* * Simple checks for non-translatable mappings. */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
