From 573dbd95964b01a942aa0c68e92b06f2c9536964 Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Thu, 1 Sep 2005 17:44:29 -0700 Subject: [CRYPTO]: crypto_free_tfm() callers no longer need to check for NULL Since the patch to add a NULL short-circuit to crypto_free_tfm() went in, there's no longer any need for callers of that function to check for NULL. This patch removes the redundant NULL checks and also a few similar checks for NULL before calls to kfree() that I ran into while doing the crypto_free_tfm bits. I've succesfuly compile tested this patch, and a kernel with the patch applied boots and runs just fine. When I posted the patch to LKML (and other lists/people on Cc) it drew the following comments : J. Bruce Fields commented "I've no problem with the auth_gss or nfsv4 bits.--b." Sridhar Samudrala said "sctp change looks fine." Herbert Xu signed off on the patch. So, I guess this is ready to be dropped into -mm and eventually mainline. Signed-off-by: Jesper Juhl Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- net/ipv6/addrconf.c | 6 ++---- net/ipv6/ah6.c | 18 ++++++------------ net/ipv6/esp6.c | 24 ++++++++---------------- net/ipv6/ipcomp6.c | 3 +-- 4 files changed, 17 insertions(+), 34 deletions(-) (limited to 'net/ipv6') diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 937ad32db77..6d6fb74f3b5 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3593,10 +3593,8 @@ void __exit addrconf_cleanup(void) rtnl_unlock(); #ifdef CONFIG_IPV6_PRIVACY - if (likely(md5_tfm != NULL)) { - crypto_free_tfm(md5_tfm); - md5_tfm = NULL; - } + crypto_free_tfm(md5_tfm); + md5_tfm = NULL; #endif #ifdef CONFIG_PROC_FS diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c index 0ebfad907a0..f3629730eb1 100644 --- a/net/ipv6/ah6.c +++ b/net/ipv6/ah6.c @@ -401,10 +401,8 @@ static int ah6_init_state(struct xfrm_state *x) error: if (ahp) { - if (ahp->work_icv) - kfree(ahp->work_icv); - if (ahp->tfm) - crypto_free_tfm(ahp->tfm); + kfree(ahp->work_icv); + crypto_free_tfm(ahp->tfm); kfree(ahp); } return -EINVAL; @@ -417,14 +415,10 @@ static void ah6_destroy(struct xfrm_state *x) if (!ahp) return; - if (ahp->work_icv) { - kfree(ahp->work_icv); - ahp->work_icv = NULL; - } - if (ahp->tfm) { - crypto_free_tfm(ahp->tfm); - ahp->tfm = NULL; - } + kfree(ahp->work_icv); + ahp->work_icv = NULL; + crypto_free_tfm(ahp->tfm); + ahp->tfm = NULL; kfree(ahp); } diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index e8bff9d3d96..9b27460f0cc 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -276,22 +276,14 @@ static void esp6_destroy(struct xfrm_state *x) if (!esp) return; - if (esp->conf.tfm) { - crypto_free_tfm(esp->conf.tfm); - esp->conf.tfm = NULL; - } - if (esp->conf.ivec) { - kfree(esp->conf.ivec); - esp->conf.ivec = NULL; - } - if (esp->auth.tfm) { - crypto_free_tfm(esp->auth.tfm); - esp->auth.tfm = NULL; - } - if (esp->auth.work_icv) { - kfree(esp->auth.work_icv); - esp->auth.work_icv = NULL; - } + crypto_free_tfm(esp->conf.tfm); + esp->conf.tfm = NULL; + kfree(esp->conf.ivec); + esp->conf.ivec = NULL; + crypto_free_tfm(esp->auth.tfm); + esp->auth.tfm = NULL; + kfree(esp->auth.work_icv); + esp->auth.work_icv = NULL; kfree(esp); } diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c index 135383ef538..85bfbc69b2c 100644 --- a/net/ipv6/ipcomp6.c +++ b/net/ipv6/ipcomp6.c @@ -341,8 +341,7 @@ static void ipcomp6_free_tfms(struct crypto_tfm **tfms) for_each_cpu(cpu) { struct crypto_tfm *tfm = *per_cpu_ptr(tfms, cpu); - if (tfm) - crypto_free_tfm(tfm); + crypto_free_tfm(tfm); } free_percpu(tfms); } -- cgit v1.2.3