aboutsummaryrefslogtreecommitdiffstats
path: root/lib
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2008-11-18 23:38:23 -0800
committerDavid S. Miller <davem@davemloft.net>2008-11-18 23:38:23 -0800
commit198d6ba4d7f48c94f990f4604f0b3d73925e0ded (patch)
tree56bbdf8ba2553c23c8099da9344a8f1d1aba97ab /lib
parent9a57f7fabd383920585ed8b74eacd117c6551f2d (diff)
parent7f0f598a0069d1ab072375965a4b69137233169c (diff)
downloadmrst-s0i3-test-198d6ba4d7f48c94f990f4604f0b3d73925e0ded.tar.gz
mrst-s0i3-test-198d6ba4d7f48c94f990f4604f0b3d73925e0ded.tar.xz
mrst-s0i3-test-198d6ba4d7f48c94f990f4604f0b3d73925e0ded.zip
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/isdn/i4l/isdn_net.c fs/cifs/connect.c
Diffstat (limited to 'lib')
-rw-r--r--lib/swiotlb.c10
1 files changed, 7 insertions, 3 deletions
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 */