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>

diff --git a/drivers/dma/coh901318_lli.c b/drivers/dma/coh901318_lli.c
index 5f9af19..71d58c1 100644 (file)
--- 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);