From: Radu Alexe <radu.alexe@xxxxxxx>
This function will be used into further patches.
Signed-off-by: Radu Alexe <radu.alexe@xxxxxxx>
Signed-off-by: Horia Geantă <horia.geanta@xxxxxxx>
---
drivers/crypto/caam/caampkc.c | 13 +++++++++----
1 file 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;
--
2.12.0.264.gd6db3f216544
