Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/l…

…inux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  swiotlb: use coherent_dma_mask in alloc_coherent
  MAINTAINERS: remove me as RAID maintainer

MAINTAINERS

@@ -3928,8 +3928,6 @@ M:	bootc@bootc.net
 S:	Maintained
 
 SOFTWARE RAID (Multiple Disks) SUPPORT
-P:	Ingo Molnar
-M:	mingo@redhat.com
 P:	Neil Brown
 M:	neilb@suse.de
 L:	linux-raid@vger.kernel.org

lib/swiotlb.c

@@ -467,9 +467,13 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
 	dma_addr_t dev_addr;
 	void *ret;
 	int order = get_order(size);
+	u64 dma_mask = DMA_32BIT_MASK;
+
+	if (hwdev && hwdev->coherent_dma_mask)
+		dma_mask = hwdev->coherent_dma_mask;
 
 	ret = (void *)__get_free_pages(flags, order);
-	if (ret && address_needs_mapping(hwdev, virt_to_bus(ret), size)) {
+	if (ret && !is_buffer_dma_capable(dma_mask, virt_to_bus(ret), size)) {
 		/*
 		 * The allocated memory isn't reachable by the device.
 		 * Fall back on swiotlb_map_single().
@@ -493,9 +497,9 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
 	dev_addr = virt_to_bus(ret);
 
 	/* Confirm address can be DMA'd by device */
-	if (address_needs_mapping(hwdev, dev_addr, size)) {
+	if (!is_buffer_dma_capable(dma_mask, dev_addr, size)) {
 		printk("hwdev DMA mask = 0x%016Lx, dev_addr = 0x%016Lx\n",
-		       (unsigned long long)*hwdev->dma_mask,
+		       (unsigned long long)dma_mask,
 		       (unsigned long long)dev_addr);
 
 		/* DMA_TO_DEVICE to avoid memcpy in unmap_single */