1 files changed, 30 insertions, 31 deletions

diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c
index 3aa10b328254..91292f5513ff 100644
--- a/drivers/dma/sun6i-dma.c
+++ b/drivers/dma/sun6i-dma.c
@@ -230,30 +230,25 @@ static inline void sun6i_dma_dump_chan_regs(struct sun6i_dma_dev *sdev,
                 readl(pchan->base + DMA_CHAN_CUR_PARA));
 }
 
-static inline int convert_burst(u32 maxburst, u8 *burst)
+static inline s8 convert_burst(u32 maxburst)
 {
         switch (maxburst) {
         case 1:
-                *burst = 0;
-                break;
+                return 0;
         case 8:
-                *burst = 2;
-                break;
+                return 2;
         default:
                 return -EINVAL;
         }
-
-        return 0;
 }
 
-static inline int convert_buswidth(enum dma_slave_buswidth addr_width, u8 *width)
+static inline s8 convert_buswidth(enum dma_slave_buswidth addr_width)
 {
         if ((addr_width < DMA_SLAVE_BUSWIDTH_1_BYTE) ||
             (addr_width > DMA_SLAVE_BUSWIDTH_4_BYTES))
                 return -EINVAL;
 
-        *width = addr_width >> 1;
-        return 0;
+        return addr_width >> 1;
 }
 
 static void *sun6i_dma_lli_add(struct sun6i_dma_lli *prev,
@@ -284,26 +279,25 @@ static inline int sun6i_dma_cfg_lli(struct sun6i_dma_lli *lli,
                                     struct dma_slave_config *config)
 {
         u8 src_width, dst_width, src_burst, dst_burst;
-        int ret;
 
         if (!config)
                 return -EINVAL;
 
-        ret = convert_burst(config->src_maxburst, &src_burst);
-        if (ret)
-                return ret;
+        src_burst = convert_burst(config->src_maxburst);
+        if (src_burst)
+                return src_burst;
 
-        ret = convert_burst(config->dst_maxburst, &dst_burst);
-        if (ret)
-                return ret;
+        dst_burst = convert_burst(config->dst_maxburst);
+        if (dst_burst)
+                return dst_burst;
 
-        ret = convert_buswidth(config->src_addr_width, &src_width);
-        if (ret)
-                return ret;
+        src_width = convert_buswidth(config->src_addr_width);
+        if (src_width)
+                return src_width;
 
-        ret = convert_buswidth(config->dst_addr_width, &dst_width);
-        if (ret)
-                return ret;
+        dst_width = convert_buswidth(config->dst_addr_width);
+        if (dst_width)
+                return dst_width;
 
         lli->cfg = DMA_CHAN_CFG_SRC_BURST(src_burst) |
                 DMA_CHAN_CFG_SRC_WIDTH(src_width) |
@@ -542,11 +536,10 @@ static struct dma_async_tx_descriptor *sun6i_dma_prep_dma_memcpy(
 {
         struct sun6i_dma_dev *sdev = to_sun6i_dma_dev(chan->device);
         struct sun6i_vchan *vchan = to_sun6i_vchan(chan);
-        struct dma_slave_config *sconfig = &vchan->cfg;
         struct sun6i_dma_lli *v_lli;
         struct sun6i_desc *txd;
         dma_addr_t p_lli;
-        int ret;
+        s8 burst, width;
 
         dev_dbg(chan2dev(chan),
                 "%s; chan: %d, dest: %pad, src: %pad, len: %zu. flags: 0x%08lx\n",
@@ -565,14 +558,21 @@ static struct dma_async_tx_descriptor *sun6i_dma_prep_dma_memcpy(
                 goto err_txd_free;
         }
 
-        ret = sun6i_dma_cfg_lli(v_lli, src, dest, len, sconfig);
-        if (ret)
-                goto err_dma_free;
+        v_lli->src = src;
+        v_lli->dst = dest;
+        v_lli->len = len;
+        v_lli->para = NORMAL_WAIT;
 
+        burst = convert_burst(8);
+        width = convert_buswidth(DMA_SLAVE_BUSWIDTH_4_BYTES);
         v_lli->cfg |= DMA_CHAN_CFG_SRC_DRQ(DRQ_SDRAM) |
                 DMA_CHAN_CFG_DST_DRQ(DRQ_SDRAM) |
                 DMA_CHAN_CFG_DST_LINEAR_MODE |
-                DMA_CHAN_CFG_SRC_LINEAR_MODE;
+                DMA_CHAN_CFG_SRC_LINEAR_MODE |
+                DMA_CHAN_CFG_SRC_BURST(burst) |
+                DMA_CHAN_CFG_SRC_WIDTH(width) |
+                DMA_CHAN_CFG_DST_BURST(burst) |
+                DMA_CHAN_CFG_DST_WIDTH(width);
 
         sun6i_dma_lli_add(NULL, v_lli, p_lli, txd);
 
@@ -580,8 +580,6 @@ static struct dma_async_tx_descriptor *sun6i_dma_prep_dma_memcpy(
 
         return vchan_tx_prep(&vchan->vc, &txd->vd, flags);
 
-err_dma_free:
-        dma_pool_free(sdev->pool, v_lli, p_lli);
 err_txd_free:
         kfree(txd);
         return NULL;
@@ -915,6 +913,7 @@ static int sun6i_dma_probe(struct platform_device *pdev)
         sdc->slave.device_prep_dma_memcpy       = sun6i_dma_prep_dma_memcpy;
         sdc->slave.device_control               = sun6i_dma_control;
         sdc->slave.chancnt                      = NR_MAX_VCHANS;
+        sdc->slave.copy_align                   = 4;
 
         sdc->slave.dev = &pdev->dev;