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From: Dan Carpenter on 22 Mar 2010 11:30
I was concerned about the error handling for crypto_get_attr_type() in
pcrypt_alloc_aead(). Steffen Klassert pointed out that we could simply
avoid calling crypto_get_attr_type() if we passed the type and mask as a
parameters.

Signed-off-by: Dan Carpenter <error27(a)gmail.com>
---
All three versions have basically been the same except for style issues.
I will confess that this (hopefully final :P) version looks much nicer
than the earlier ones.

diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c
index 8020124..247178c 100644
--- a/crypto/pcrypt.c
+++ b/crypto/pcrypt.c
@@ -315,16 +315,13 @@ out_free_inst:
goto out;
}

-static struct crypto_instance *pcrypt_alloc_aead(struct rtattr **tb)
+static struct crypto_instance *pcrypt_alloc_aead(struct rtattr **tb,
+ u32 type, u32 mask)
{
struct crypto_instance *inst;
struct crypto_alg *alg;
- struct crypto_attr_type *algt;
-
- algt = crypto_get_attr_type(tb);

- alg = crypto_get_attr_alg(tb, algt->type,
- (algt->mask & CRYPTO_ALG_TYPE_MASK));
+ alg = crypto_get_attr_alg(tb, type, (mask & CRYPTO_ALG_TYPE_MASK));
if (IS_ERR(alg))
return ERR_CAST(alg);

@@ -365,7 +362,7 @@ static struct crypto_instance *pcrypt_alloc(struct rtattr **tb)

switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) {
case CRYPTO_ALG_TYPE_AEAD:
- return pcrypt_alloc_aead(tb);
+ return pcrypt_alloc_aead(tb, algt->type, algt->mask);
}

return ERR_PTR(-EINVAL);
--
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Prev: Updated hid_blacklist, reformatted code and removed unused variable
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