diff --git a/[refs] b/[refs]
index bc96e47ef5f3..2e7fbf684e37 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 650320181a08b64d4421c65c639cf47ad8cc2cd6
+refs/heads/master: 4fddcaebb9014b4814f859420595cc419400fba6
diff --git a/trunk/arch/arm/include/asm/mach/arch.h b/trunk/arch/arm/include/asm/mach/arch.h
index 946f4d778f71..3281fb4b12e3 100644
--- a/trunk/arch/arm/include/asm/mach/arch.h
+++ b/trunk/arch/arm/include/asm/mach/arch.h
@@ -23,6 +23,10 @@ struct machine_desc {
 
 	unsigned int		nr_irqs;	/* number of IRQs */
 
+#ifdef CONFIG_ZONE_DMA
+	unsigned long		dma_zone_size;	/* size of DMA-able area */
+#endif
+
 	unsigned int		video_start;	/* start of video RAM	*/
 	unsigned int		video_end;	/* end of video RAM	*/
 
diff --git a/trunk/arch/arm/kernel/setup.c b/trunk/arch/arm/kernel/setup.c
index ed11fb08b05a..e0db84d7e384 100644
--- a/trunk/arch/arm/kernel/setup.c
+++ b/trunk/arch/arm/kernel/setup.c
@@ -916,6 +916,12 @@ void __init setup_arch(char **cmdline_p)
 	cpu_init();
 	tcm_init();
 
+#ifdef CONFIG_ZONE_DMA
+	if (mdesc->dma_zone_size) {
+		extern unsigned long arm_dma_zone_size;
+		arm_dma_zone_size = mdesc->dma_zone_size;
+	}
+#endif
 #ifdef CONFIG_MULTI_IRQ_HANDLER
 	handle_arch_irq = mdesc->handle_irq;
 #endif