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authorLinus Walleij <linus.walleij@stericsson.com>2010-03-02 20:12:56 +0100
committerDan Williams <dan.j.williams@intel.com>2010-03-02 14:17:46 -0700
commit56a5d3cf21c71963c8fc506e9b9d3f71641d9c71 (patch)
tree3f793e6f9323fa4d34b71c2f1bb85e0497135207 /drivers/dma/coh901318_lli.c
parent516fd4305e5f5718475e81fe5c17c95888a8157b (diff)
downloadop-kernel-dev-56a5d3cf21c71963c8fc506e9b9d3f71641d9c71.zip
op-kernel-dev-56a5d3cf21c71963c8fc506e9b9d3f71641d9c71.tar.gz
DMAENGINE: COH 901 318 lli sg offset fix
This makes the COH 901 318 respect the scatter offset field by using the sg_phys() rather than the sg_dma_address() so we get a pointer to the actual data we want to send rather than the beginning of the buffer. Also initialize the lli:s a bit more thoroughly. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/coh901318_lli.c')
-rw-r--r--drivers/dma/coh901318_lli.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/dma/coh901318_lli.c b/drivers/dma/coh901318_lli.c
index 5f9af19..71d58c1 100644
--- a/drivers/dma/coh901318_lli.c
+++ b/drivers/dma/coh901318_lli.c
@@ -74,6 +74,8 @@ coh901318_lli_alloc(struct coh901318_pool *pool, unsigned int len)
lli = head;
lli->phy_this = phy;
+ lli->link_addr = 0x00000000;
+ lli->virt_link_addr = 0x00000000U;
for (i = 1; i < len; i++) {
lli_prev = lli;
@@ -85,13 +87,13 @@ coh901318_lli_alloc(struct coh901318_pool *pool, unsigned int len)
DEBUGFS_POOL_COUNTER_ADD(pool, 1);
lli->phy_this = phy;
+ lli->link_addr = 0x00000000;
+ lli->virt_link_addr = 0x00000000U;
lli_prev->link_addr = phy;
lli_prev->virt_link_addr = lli;
}
- lli->link_addr = 0x00000000U;
-
spin_unlock(&pool->lock);
return head;
@@ -268,10 +270,10 @@ coh901318_lli_fill_sg(struct coh901318_pool *pool,
if (dir == DMA_TO_DEVICE)
/* increment source address */
- src = sg_dma_address(sg);
+ src = sg_phys(sg);
else
/* increment destination address */
- dst = sg_dma_address(sg);
+ dst = sg_phys(sg);
bytes_to_transfer = sg_dma_len(sg);
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