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[CRYPTO] api: Explain the comparison on larval cra_name 

This patch adds a comment to explain why we compare the cra_driver_name of
the algorithm being registered against the cra_name of a larval as opposed
to the cra_driver_name of the larval.

In fact larvals have only one name, cra_name which is the name that was
requested by the user.  The test here is simply trying to find out whether
the algorithm being registered can or can not satisfy the larval.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
hifive-unleashed-5.1
Herbert Xu 2007-10-02 22:27:29 +08:00 committed by David S. Miller
parent 70613783fc
commit d8058480b3
1 changed files with 5 additions and 0 deletions
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5
crypto/algapi.c
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@ -149,6 +149,11 @@ static int __crypto_register_alg(struct crypto_alg *alg,
if (crypto_is_larval(q)) {
struct crypto_larval *larval = (void *)q;
/*
* Check to see if either our generic name or
* specific name can satisfy the name requested
* by the larval entry q.
*/
if (strcmp(alg->cra_name, q->cra_name) &&
strcmp(alg->cra_driver_name, q->cra_name))
continue;