Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c8eb5404 authored by Dmitry Kasatkin's avatar Dmitry Kasatkin Committed by Herbert Xu
Browse files

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: default avatarDmitry Kasatkin <dmitry.kasatkin@nokia.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 0c3cf4cc

drivers/crypto/omap-sham.c

+10 −9
Original line number Diff line number Diff line
@@ -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;

}