mmc: sh_mmcif: use dmaengine helpers, drop submit check

Use the new dmaengine helper functions, and drop the error check
on the returned cookier from the dmaengine - we recently
established that this is really not allowed to fail.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 6 insertions, 16 deletions

diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index e247031f91f7..aea86262ed66 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -224,14 +224,9 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host)
         if (desc) {
                 desc->callback = mmcif_dma_complete;
                 desc->callback_param = host;
-                cookie = desc->tx_submit(desc);
-                if (cookie < 0) {
-                        desc = NULL;
-                        ret = cookie;
-                } else {
-                        sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN);
-                        chan->device->device_issue_pending(chan);
-                }
+                cookie = dmaengine_submit(desc);
+                sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN);
+                dma_async_issue_pending(chan);
         }
         dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n",
                 __func__, host->data->sg_len, ret, cookie);
@@ -277,14 +272,9 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
         if (desc) {
                 desc->callback = mmcif_dma_complete;
                 desc->callback_param = host;
-                cookie = desc->tx_submit(desc);
-                if (cookie < 0) {
-                        desc = NULL;
-                        ret = cookie;
-                } else {
-                        sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAWEN);
-                        chan->device->device_issue_pending(chan);
-                }
+                cookie = dmaengine_submit(desc);
+                sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAWEN);
+                dma_async_issue_pending(chan);
         }
         dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n",
                 __func__, host->data->sg_len, ret, cookie);