aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--arch/arm/mm/ioremap.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index ab506272b2d..17e7b0b57e4 100644
--- 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,
204 /* 204 /*
205 * Don't allow RAM to be mapped - this causes problems with ARMv6+ 205 * Don't allow RAM to be mapped - this causes problems with ARMv6+
206 */ 206 */
207 if (WARN_ON(pfn_valid(pfn))) 207 if (pfn_valid(pfn)) {
208 return NULL; 208 printk(KERN_WARNING "BUG: Your driver calls ioremap() on system memory. This leads\n"
209 KERN_WARNING "to architecturally unpredictable behaviour on ARMv6+, and ioremap()\n"
210 KERN_WARNING "will fail in the next kernel release. Please fix your driver.\n");
211 WARN_ON(1);
212 }
209 213
210 type = get_mem_type(mtype); 214 type = get_mem_type(mtype);
211 if (!type) 215 if (!type)