crypto: omap-sham - DMA initialization fixes for off mode

DMA parameters for constant data were initialized during driver probe().
It seems that those settings sometimes are lost when devices goes to off mode.
This patch makes DMA initialization just before use.
It solves off mode problems.

Fixes: NB#202786 - Aegis & SHA1 block off mode changes

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@nokia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 10 insertions, 9 deletions

diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index 222237014007..9dfbc4ab7711 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -318,6 +318,16 @@ static int omap_sham_xmit_dma(struct omap_sham_dev *dd, dma_addr_t dma_addr,
         omap_set_dma_src_params(dd->dma_lch, 0, OMAP_DMA_AMODE_POST_INC,
                                 dma_addr, 0, 0);
 
+        omap_set_dma_dest_params(dd->dma_lch, 0,
+                        OMAP_DMA_AMODE_CONSTANT,
+                        dd->phys_base + SHA_REG_DIN(0), 0, 16);
+
+        omap_set_dma_dest_burst_mode(dd->dma_lch,
+                        OMAP_DMA_DATA_BURST_16);
+
+        omap_set_dma_src_burst_mode(dd->dma_lch,
+                        OMAP_DMA_DATA_BURST_4);
+
         err = omap_sham_write_ctrl(dd, length, final, 1);
         if (err)
                 return err;
@@ -1071,15 +1081,6 @@ static int omap_sham_dma_init(struct omap_sham_dev *dd)
                 dev_err(dd->dev, "Unable to request DMA channel\n");
                 return err;
         }
-        omap_set_dma_dest_params(dd->dma_lch, 0,
-                        OMAP_DMA_AMODE_CONSTANT,
-                        dd->phys_base + SHA_REG_DIN(0), 0, 16);
-
-        omap_set_dma_dest_burst_mode(dd->dma_lch,
-                        OMAP_DMA_DATA_BURST_16);
-
-        omap_set_dma_src_burst_mode(dd->dma_lch,
-                        OMAP_DMA_DATA_BURST_4);
 
         return 0;
 }