1 files changed, 9 insertions, 10 deletions

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index ea0ee81cff53..3d7d705f026f 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -253,7 +253,7 @@ atc_chain_complete(struct at_dma_chan *atchan, struct at_desc *desc)
         /* move myself to free_list */
         list_move(&desc->desc_node, &atchan->free_list);
 
-        /* unmap dma addresses */
+        /* unmap dma addresses (not on slave channels) */
         if (!atchan->chan_common.private) {
                 struct device *parent = chan2parent(&atchan->chan_common);
                 if (!(txd->flags & DMA_COMPL_SKIP_DEST_UNMAP)) {
@@ -583,7 +583,6 @@ atc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
                 desc->lli.ctrlb = ctrlb;
 
                 desc->txd.cookie = 0;
-                async_tx_ack(&desc->txd);
 
                 if (!first) {
                         first = desc;
@@ -604,7 +603,7 @@ atc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
         /* set end-of-link to the last link descriptor of list*/
         set_desc_eol(desc);
 
-        desc->txd.flags = flags; /* client is in control of this ack */
+        first->txd.flags = flags; /* client is in control of this ack */
 
         return &first->txd;
 
@@ -670,7 +669,7 @@ atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
                         if (!desc)
                                 goto err_desc_get;
 
-                        mem = sg_phys(sg);
+                        mem = sg_dma_address(sg);
                         len = sg_dma_len(sg);
                         mem_width = 2;
                         if (unlikely(mem & 3 || len & 3))
@@ -712,7 +711,7 @@ atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
                         if (!desc)
                                 goto err_desc_get;
 
-                        mem = sg_phys(sg);
+                        mem = sg_dma_address(sg);
                         len = sg_dma_len(sg);
                         mem_width = 2;
                         if (unlikely(mem & 3 || len & 3))
@@ -749,8 +748,8 @@ atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
         first->txd.cookie = -EBUSY;
         first->len = total_len;
 
-        /* last link descriptor of list is responsible of flags */
-        prev->txd.flags = flags; /* client is in control of this ack */
+        /* first link descriptor of list is responsible of flags */
+        first->txd.flags = flags; /* client is in control of this ack */
 
         return &first->txd;
 
@@ -854,11 +853,11 @@ static void atc_issue_pending(struct dma_chan *chan)
 
         dev_vdbg(chan2dev(chan), "issue_pending\n");
 
+        spin_lock_bh(&atchan->lock);
         if (!atc_chan_is_enabled(atchan)) {
-                spin_lock_bh(&atchan->lock);
                 atc_advance_work(atchan);
-                spin_unlock_bh(&atchan->lock);
         }
+        spin_unlock_bh(&atchan->lock);
 }
 
 /**
@@ -1210,7 +1209,7 @@ static int __init at_dma_init(void)
 {
         return platform_driver_probe(&at_dma_driver, at_dma_probe);
 }
-module_init(at_dma_init);
+subsys_initcall(at_dma_init);
 
 static void __exit at_dma_exit(void)
 {