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authorDmitry Kasatkin <dmitry.kasatkin@nokia.com>2010-11-19 17:04:23 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2010-11-27 11:37:17 +0300
commitc8eb54041acc4dedeaf0d9da34b91b8658386751 (patch)
tree1f1986d9d779aad728d048b9c1a1ff4823668055 /drivers/crypto/omap-sham.c
parent0c3cf4cc9abd854dcc6488719348a75b8f328c54 (diff)
downloadlinux-c8eb54041acc4dedeaf0d9da34b91b8658386751.tar.xz
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>
Diffstat (limited to 'drivers/crypto/omap-sham.c')
-rw-r--r--drivers/crypto/omap-sham.c19
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;
}