summaryrefslogtreecommitdiffstats
path: root/arch/s390/crypto/sha_common.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/crypto/sha_common.c')
-rw-r--r--arch/s390/crypto/sha_common.c23
1 files changed, 7 insertions, 16 deletions
diff --git a/arch/s390/crypto/sha_common.c b/arch/s390/crypto/sha_common.c
index 8e908166c3ee..c740f77285b2 100644
--- a/arch/s390/crypto/sha_common.c
+++ b/arch/s390/crypto/sha_common.c
@@ -22,8 +22,7 @@ int s390_sha_update(struct shash_desc *desc, const u8 *data, unsigned int len)
{
struct s390_sha_ctx *ctx = shash_desc_ctx(desc);
unsigned int bsize = crypto_shash_blocksize(desc->tfm);
- unsigned int index;
- int ret;
+ unsigned int index, n;
/* how much is already in the buffer? */
index = ctx->count & (bsize - 1);
@@ -35,9 +34,7 @@ int s390_sha_update(struct shash_desc *desc, const u8 *data, unsigned int len)
/* process one stored block */
if (index) {
memcpy(ctx->buf + index, data, bsize - index);
- ret = cpacf_kimd(ctx->func, ctx->state, ctx->buf, bsize);
- if (ret != bsize)
- return -EIO;
+ cpacf_kimd(ctx->func, ctx->state, ctx->buf, bsize);
data += bsize - index;
len -= bsize - index;
index = 0;
@@ -45,12 +42,10 @@ int s390_sha_update(struct shash_desc *desc, const u8 *data, unsigned int len)
/* process as many blocks as possible */
if (len >= bsize) {
- ret = cpacf_kimd(ctx->func, ctx->state, data,
- len & ~(bsize - 1));
- if (ret != (len & ~(bsize - 1)))
- return -EIO;
- data += ret;
- len -= ret;
+ n = len & ~(bsize - 1);
+ cpacf_kimd(ctx->func, ctx->state, data, n);
+ data += n;
+ len -= n;
}
store:
if (len)
@@ -66,7 +61,6 @@ int s390_sha_final(struct shash_desc *desc, u8 *out)
unsigned int bsize = crypto_shash_blocksize(desc->tfm);
u64 bits;
unsigned int index, end, plen;
- int ret;
/* SHA-512 uses 128 bit padding length */
plen = (bsize > SHA256_BLOCK_SIZE) ? 16 : 8;
@@ -88,10 +82,7 @@ int s390_sha_final(struct shash_desc *desc, u8 *out)
*/
bits = ctx->count * 8;
memcpy(ctx->buf + end - 8, &bits, sizeof(bits));
-
- ret = cpacf_kimd(ctx->func, ctx->state, ctx->buf, end);
- if (ret != end)
- return -EIO;
+ cpacf_kimd(ctx->func, ctx->state, ctx->buf, end);
/* copy digest to out */
memcpy(out, ctx->state, crypto_shash_digestsize(desc->tfm));