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Commit 7ca4a9a1 authored by Radu Alexe's avatar Radu Alexe Committed by Herbert Xu
Browse files

crypto: caam - incapsulate dropping leading zeros into function 



This function will be used into further patches.

Signed-off-by: default avatarRadu Alexe <radu.alexe@nxp.com>
Signed-off-by: default avatarHoria Geantă <horia.geanta@nxp.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 7fcaf62a

drivers/crypto/caam/caampkc.c

+9 −4
Original line number Diff line number Diff line
@@ -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;