diff options
| author | Radu Alexe <radu.alexe@nxp.com> | 2017-04-25 16:26:37 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-05-18 13:19:50 +0800 |
| commit | 7ca4a9a10fe82ee50ce0da02c72791ecf7c83869 (patch) | |
| tree | 39c9de62193874efed106c6e51c8f2e5be67f7b6 /drivers/crypto | |
| parent | 7fcaf62a9f6348bcdc8d2816f93f64cf7f3f87fc (diff) | |
crypto: caam - incapsulate dropping leading zeros into function
This function will be used into further patches.
Signed-off-by: Radu Alexe <radu.alexe@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/caam/caampkc.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/crypto/caam/caampkc.c b/drivers/crypto/caam/caampkc.c index 999ba18495b0..d2c6977ba82e 100644 --- a/drivers/crypto/caam/caampkc.c +++ b/drivers/crypto/caam/caampkc.c @@ -357,6 +357,14 @@ static void caam_rsa_free_key(struct caam_rsa_key *key) key->n_sz = 0; } +static void caam_rsa_drop_leading_zeros(const u8 **ptr, size_t *nbytes) +{ + while (!**ptr && *nbytes) { + (*ptr)++; + (*nbytes)--; + } +} + /** * caam_read_raw_data - Read a raw byte stream as a positive integer. * The function skips buffer's leading zeros, copies the remained data @@ -370,10 +378,7 @@ static inline u8 *caam_read_raw_data(const u8 *buf, size_t *nbytes) { u8 *val; - while (!*buf && *nbytes) { - buf++; - (*nbytes)--; - } + caam_rsa_drop_leading_zeros(&buf, nbytes); if (!*nbytes) return NULL; |