openwrt-xburst/target/linux/ixp4xx/patches-2.6.34/601-arm-dma_free_coherent.patch

--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -381,7 +381,8 @@ EXPORT_SYMBOL(dma_mmap_writecombine);
  */
 void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, dma_addr_t handle)
 {
-	WARN_ON(irqs_disabled());
+	if (irqs_disabled()) /* don't want stack dumps for these! */
+		printk("WARNING: at %s:%d %s()\n", __FILE__, __LINE__, __FUNCTION__);
 
 	if (dma_release_from_coherent(dev, get_order(size), cpu_addr))
 		return;