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Subject[PATCH v3 04/17] crypto: talitos - Add a helper function to clear j_extent field
Date
j_extent field is specific to SEC2 so we add a helper function to clear it
so that SEC1 can redefine that function as nop

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
drivers/crypto/talitos.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index fca0aed..c93f79b 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -61,6 +61,11 @@ static void to_talitos_ptr(struct talitos_ptr *ptr, dma_addr_t dma_addr)
ptr->eptr = upper_32_bits(dma_addr);
}

+static void to_talitos_ptr_extent_clear(struct talitos_ptr *ptr)
+{
+ ptr->j_extent = 0;
+}
+
/*
* map virtual single (contiguous) pointer to h/w descriptor pointer
*/
@@ -1372,7 +1377,7 @@ int map_sg_in_talitos_ptr(struct device *dev, struct scatterlist *src,
int sg_count;

ptr->len = cpu_to_be16(len);
- ptr->j_extent = 0;
+ to_talitos_ptr_extent_clear(ptr);

sg_count = talitos_map_sg(dev, src, edesc->src_nents ? : 1, dir,
edesc->src_chained);
@@ -1402,7 +1407,7 @@ void map_sg_out_talitos_ptr(struct device *dev, struct scatterlist *dst,
struct talitos_ptr *ptr, int sg_count)
{
ptr->len = cpu_to_be16(len);
- ptr->j_extent = 0;
+ to_talitos_ptr_extent_clear(ptr);

if (dir != DMA_NONE)
sg_count = talitos_map_sg(dev, dst, edesc->dst_nents ? : 1,
@@ -1444,7 +1449,7 @@ static int common_nonsnoop(struct talitos_edesc *edesc,
/* cipher iv */
to_talitos_ptr(&desc->ptr[1], edesc->iv_dma);
desc->ptr[1].len = cpu_to_be16(ivsize);
- desc->ptr[1].j_extent = 0;
+ to_talitos_ptr_extent_clear(&desc->ptr[1]);

/* cipher key */
map_single_talitos_ptr(dev, &desc->ptr[2], ctx->keylen,
--
2.1.0


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