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authorLinus Torvalds <torvalds@linux-foundation.org>2008-11-18 08:06:00 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-18 08:06:00 -0800
commitb6584065ee833dcec20683be7fc25da3f2268cee (patch)
tree29e2a8cbc5ada9c81492133f71cd4a84ec2c6fde
parent376fdd2a5d2484c90caabef483390a2cd3cda7a0 (diff)
parent1e74f3000b86969de421ca0da08f42e7d21cbd99 (diff)
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/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
-rw-r--r--MAINTAINERS2
-rw-r--r--lib/swiotlb.c10
2 files changed, 7 insertions, 5 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index 8e0777fae3c..627e4c89328 100644
--- a/MAINTAINERS
+++ b/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
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 78330c37a61..5f6c629a924 100644
--- a/lib/swiotlb.c
+++ b/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 */