x86: change ioremap() to default to uncached
Prepare ioremap() to default to uncached. This will be the
safest - but first we have to fix CPA.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/asm-x86/io_32.h b/include/asm-x86/io_32.h
index 2a04bd1..db39788 100644
--- a/include/asm-x86/io_32.h
+++ b/include/asm-x86/io_32.h
@@ -111,18 +111,27 @@
* make bus memory CPU accessible via the readb/readw/readl/writeb/
* writew/writel functions and the other mmio helpers. The returned
* address is not guaranteed to be usable directly as a virtual
- * address.
+ * address.
*
* If the area you are trying to map is a PCI BAR you should have a
* look at pci_iomap().
*/
+extern void __iomem * ioremap_nocache(unsigned long offset, unsigned long size);
-static inline void __iomem * ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem *
+ioremap_cache(unsigned long offset, unsigned long size)
{
return __ioremap(offset, size, 0);
}
-extern void __iomem * ioremap_nocache(unsigned long offset, unsigned long size);
+/*
+ * The default ioremap() behavior is non-cached:
+ */
+static inline void __iomem * ioremap(unsigned long offset, unsigned long size)
+{
+ return ioremap_nocache(offset, size);
+}
+
extern void iounmap(volatile void __iomem *addr);
/*