Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

[pandora-kernel.git] / arch / arm / mm / ioremap.c

diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index ab50627..17e7b0b 100644 (file)
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -204,8 +204,12 @@ void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn,
        /*
         * Don't allow RAM to be mapped - this causes problems with ARMv6+
         */
-       if (WARN_ON(pfn_valid(pfn)))
-               return NULL;
+       if (pfn_valid(pfn)) {
+               printk(KERN_WARNING "BUG: Your driver calls ioremap() on system memory.  This leads\n"
+                      KERN_WARNING "to architecturally unpredictable behaviour on ARMv6+, and ioremap()\n"
+                      KERN_WARNING "will fail in the next kernel release.  Please fix your driver.\n");
+               WARN_ON(1);
+       }
 
        type = get_mem_type(mtype);
        if (!type)