[PATCH] resource release cleanup in net/

From: Jesper Juhl
Date: Sat Apr 30 2005 - 15:42:52 EST

Hi David,

Since Andrew merged the patch that makes calling crypto_free_tfm() with a
NULL pointer safe into 2.6.12-rc3-mm1, I made a patch to remove checks for
NULL before calling that function, and while I was at it I removed similar
redundant checks before calls to kfree() and vfree() in the same files.
There are also a few tiny whitespace cleanups in there.

I believe you are the maintainer in charge of the code I've changed, so
that's why I'm sending this to you. Sorry about the long CC list, but I
wanted to make sure that people whos code I've changed got informed.

Since the changes I'm making are very similar for both kfree, vfree &
crypto_free_tfm, I've lumped it all into one single patch. If you'd prefer
it split into 3-4 patches instead then just let me know and I can do that
instead.

If the patch is acceptable then please let me know if you'll merge it into
your tree or if you'd like me to send on to Andrew myself for future -mm
inclusion.
If the patch is not OK, then feedback is of course very welcome.


Signed-off-by: Jesper Juhl <juhl-lkml@xxxxxx>
---

drivers/net/wireless/airo.c | 95 ++++++++++--------------
drivers/net/wireless/hostap/hostap_crypt_ccmp.c | 5 -
drivers/net/wireless/hostap/hostap_crypt_tkip.c | 10 +-
drivers/net/wireless/hostap/hostap_crypt_wep.c | 5 -
net/ieee80211/ieee80211_crypt_ccmp.c | 5 -
net/ieee80211/ieee80211_crypt_tkip.c | 10 +-
net/ieee80211/ieee80211_crypt_wep.c | 5 -
net/ipv4/ah4.c | 18 +---
net/ipv4/esp4.c | 28 +++----
net/ipv4/ipcomp.c | 6 -
net/ipv6/addrconf.c | 9 --
net/ipv6/ah6.c | 28 ++-----
net/ipv6/esp6.c | 28 +++----
net/ipv6/ipcomp6.c | 9 --
net/sctp/endpointola.c | 3
net/sctp/socket.c | 3
net/sunrpc/auth_gss/gss_krb5_crypto.c | 3
net/sunrpc/auth_gss/gss_krb5_mech.c | 9 --
net/sunrpc/auth_gss/gss_spkm3_mech.c | 16 +---
19 files changed, 119 insertions(+), 176 deletions(-)

--- linux-2.6.12-rc3-mm1-orig/drivers/net/wireless/airo.c 2005-04-30 18:37:01.000000000 +0200
+++ linux-2.6.12-rc3-mm1/drivers/net/wireless/airo.c 2005-04-30 19:55:57.000000000 +0200
@@ -2383,14 +2383,10 @@ void stop_airo_card( struct net_device *
dev_kfree_skb(skb);
}

- if (ai->flash)
- kfree(ai->flash);
- if (ai->rssi)
- kfree(ai->rssi);
- if (ai->APList)
- kfree(ai->APList);
- if (ai->SSID)
- kfree(ai->SSID);
+ kfree(ai->flash);
+ kfree(ai->rssi);
+ kfree(ai->APList);
+ kfree(ai->SSID);
if (freeres) {
/* PCMCIA frees this stuff, so only for PCI and ISA */
release_region( dev->base_addr, 64 );
@@ -2406,8 +2402,7 @@ void stop_airo_card( struct net_device *
}
}
#ifdef MICSUPPORT
- if (ai->tfm)
- crypto_free_tfm(ai->tfm);
+ crypto_free_tfm(ai->tfm);
#endif
del_airo_dev( dev );
free_netdev( dev );
@@ -3627,11 +3622,9 @@ static u16 setup_card(struct airo_info *
WepKeyRid wkr;
int rc;

- memset( &mySsid, 0, sizeof( mySsid ) );
- if (ai->flash) {
- kfree (ai->flash);
- ai->flash = NULL;
- }
+ memset(&mySsid, 0, sizeof(mySsid));
+ kfree(ai->flash);
+ ai->flash = NULL;

/* The NOP is the first step in getting the card going */
cmd.cmd = NOP;
@@ -3668,14 +3661,11 @@ static u16 setup_card(struct airo_info *
tdsRssiRid rssi_rid;
CapabilityRid cap_rid;

- if (ai->APList) {
- kfree(ai->APList);
- ai->APList = NULL;
- }
- if (ai->SSID) {
- kfree(ai->SSID);
- ai->SSID = NULL;
- }
+ kfree(ai->APList);
+ ai->APList = NULL;
+ kfree(ai->SSID);
+ ai->SSID = NULL;
+
// general configuration (read/modify/write)
status = readConfigRid(ai, lock);
if ( status != SUCCESS ) return ERROR;
@@ -3689,10 +3679,8 @@ static u16 setup_card(struct airo_info *
memcpy(ai->rssi, (u8*)&rssi_rid + 2, 512);
}
else {
- if (ai->rssi) {
- kfree(ai->rssi);
- ai->rssi = NULL;
- }
+ kfree(ai->rssi);
+ ai->rssi = NULL;
if (cap_rid.softCap & 8)
ai->config.rmode |= RXMODE_NORMALIZED_RSSI;
else
@@ -4553,7 +4541,7 @@ static int proc_status_open( struct inod
memset(file->private_data, 0, sizeof(struct proc_data));
data = (struct proc_data *)file->private_data;
if ((data->rbuffer = kmalloc( 2048, GFP_KERNEL )) == NULL) {
- kfree (file->private_data);
+ kfree(file->private_data);
return -ENOMEM;
}

@@ -4633,7 +4621,7 @@ static int proc_stats_rid_open( struct i
memset(file->private_data, 0, sizeof(struct proc_data));
data = (struct proc_data *)file->private_data;
if ((data->rbuffer = kmalloc( 4096, GFP_KERNEL )) == NULL) {
- kfree (file->private_data);
+ kfree(file->private_data);
return -ENOMEM;
}

@@ -4899,12 +4887,12 @@ static int proc_config_open( struct inod
memset(file->private_data, 0, sizeof(struct proc_data));
data = (struct proc_data *)file->private_data;
if ((data->rbuffer = kmalloc( 2048, GFP_KERNEL )) == NULL) {
- kfree (file->private_data);
+ kfree(file->private_data);
return -ENOMEM;
}
if ((data->wbuffer = kmalloc( 2048, GFP_KERNEL )) == NULL) {
- kfree (data->rbuffer);
- kfree (file->private_data);
+ kfree(data->rbuffer);
+ kfree(file->private_data);
return -ENOMEM;
}
memset( data->wbuffer, 0, 2048 );
@@ -5174,15 +5162,15 @@ static int proc_wepkey_open( struct inod
memset(&wkr, 0, sizeof(wkr));
data = (struct proc_data *)file->private_data;
if ((data->rbuffer = kmalloc( 180, GFP_KERNEL )) == NULL) {
- kfree (file->private_data);
+ kfree(file->private_data);
return -ENOMEM;
}
memset(data->rbuffer, 0, 180);
data->writelen = 0;
data->maxwritelen = 80;
if ((data->wbuffer = kmalloc( 80, GFP_KERNEL )) == NULL) {
- kfree (data->rbuffer);
- kfree (file->private_data);
+ kfree(data->rbuffer);
+ kfree(file->private_data);
return -ENOMEM;
}
memset( data->wbuffer, 0, 80 );
@@ -5221,14 +5209,14 @@ static int proc_SSID_open( struct inode
memset(file->private_data, 0, sizeof(struct proc_data));
data = (struct proc_data *)file->private_data;
if ((data->rbuffer = kmalloc( 104, GFP_KERNEL )) == NULL) {
- kfree (file->private_data);
+ kfree(file->private_data);
return -ENOMEM;
}
data->writelen = 0;
data->maxwritelen = 33*3;
if ((data->wbuffer = kmalloc( 33*3, GFP_KERNEL )) == NULL) {
- kfree (data->rbuffer);
- kfree (file->private_data);
+ kfree(data->rbuffer);
+ kfree(file->private_data);
return -ENOMEM;
}
memset( data->wbuffer, 0, 33*3 );
@@ -5265,14 +5253,14 @@ static int proc_APList_open( struct inod
memset(file->private_data, 0, sizeof(struct proc_data));
data = (struct proc_data *)file->private_data;
if ((data->rbuffer = kmalloc( 104, GFP_KERNEL )) == NULL) {
- kfree (file->private_data);
+ kfree(file->private_data);
return -ENOMEM;
}
data->writelen = 0;
data->maxwritelen = 4*6*3;
if ((data->wbuffer = kmalloc( data->maxwritelen, GFP_KERNEL )) == NULL) {
- kfree (data->rbuffer);
- kfree (file->private_data);
+ kfree(data->rbuffer);
+ kfree(file->private_data);
return -ENOMEM;
}
memset( data->wbuffer, 0, data->maxwritelen );
@@ -5315,7 +5303,7 @@ static int proc_BSSList_open( struct ino
memset(file->private_data, 0, sizeof(struct proc_data));
data = (struct proc_data *)file->private_data;
if ((data->rbuffer = kmalloc( 1024, GFP_KERNEL )) == NULL) {
- kfree (file->private_data);
+ kfree(file->private_data);
return -ENOMEM;
}
data->writelen = 0;
@@ -5372,10 +5360,11 @@ static int proc_BSSList_open( struct ino
static int proc_close( struct inode *inode, struct file *file )
{
struct proc_data *data = (struct proc_data *)file->private_data;
- if ( data->on_close != NULL ) data->on_close( inode, file );
- if ( data->rbuffer ) kfree( data->rbuffer );
- if ( data->wbuffer ) kfree( data->wbuffer );
- kfree( data );
+ if (data->on_close)
+ data->on_close(inode, file);
+ kfree(data->rbuffer);
+ kfree(data->wbuffer);
+ kfree(data);
return 0;
}

@@ -7269,10 +7258,10 @@ static int readrids(struct net_device *d
len = comp->len;

if (copy_to_user(comp->data, iobuf, min(len, (int)RIDSIZE))) {
- kfree (iobuf);
+ kfree(iobuf);
return -EFAULT;
}
- kfree (iobuf);
+ kfree(iobuf);
return 0;
}

@@ -7350,10 +7339,10 @@ static int writerids(struct net_device *

if (copy_to_user(comp->data, iobuf,
min((int)comp->len, (int)RIDSIZE))) {
- kfree (iobuf);
+ kfree(iobuf);
return -EFAULT;
}
- kfree (iobuf);
+ kfree(iobuf);
return 0;

default:
@@ -7366,7 +7355,7 @@ static int writerids(struct net_device *
return -ENOMEM;

if (copy_from_user(iobuf,comp->data,comp->len)) {
- kfree (iobuf);
+ kfree(iobuf);
return -EFAULT;
}

@@ -7383,10 +7372,10 @@ static int writerids(struct net_device *
}

if((*writer)(ai, ridcode, iobuf,comp->len,1)) {
- kfree (iobuf);
+ kfree(iobuf);
return -EIO;
}
- kfree (iobuf);
+ kfree(iobuf);
return 0;
}

--- linux-2.6.12-rc3-mm1-orig/drivers/net/wireless/hostap/hostap_crypt_ccmp.c 2005-04-30 18:37:01.000000000 +0200
+++ linux-2.6.12-rc3-mm1/drivers/net/wireless/hostap/hostap_crypt_ccmp.c 2005-04-30 19:41:06.000000000 +0200
@@ -109,8 +109,7 @@ static void * hostap_ccmp_init(int key_i

fail:
if (priv) {
- if (priv->tfm)
- crypto_free_tfm(priv->tfm);
+ crypto_free_tfm(priv->tfm);
kfree(priv);
}
module_put(THIS_MODULE);
@@ -121,7 +120,7 @@ fail:
static void hostap_ccmp_deinit(void *priv)
{
struct hostap_ccmp_data *_priv = priv;
- if (_priv && _priv->tfm)
+ if (_priv)
crypto_free_tfm(_priv->tfm);
kfree(priv);
module_put(THIS_MODULE);
--- linux-2.6.12-rc3-mm1-orig/drivers/net/wireless/hostap/hostap_crypt_tkip.c 2005-04-30 18:37:01.000000000 +0200
+++ linux-2.6.12-rc3-mm1/drivers/net/wireless/hostap/hostap_crypt_tkip.c 2005-04-30 19:41:06.000000000 +0200
@@ -102,10 +102,8 @@ static void * hostap_tkip_init(int key_i

fail:
if (priv) {
- if (priv->tfm_michael)
- crypto_free_tfm(priv->tfm_michael);
- if (priv->tfm_arc4)
- crypto_free_tfm(priv->tfm_arc4);
+ crypto_free_tfm(priv->tfm_michael);
+ crypto_free_tfm(priv->tfm_arc4);
kfree(priv);
}
module_put(THIS_MODULE);
@@ -116,10 +114,10 @@ fail:
static void hostap_tkip_deinit(void *priv)
{
struct hostap_tkip_data *_priv = priv;
- if (_priv && _priv->tfm_michael)
+ if (_priv) {
crypto_free_tfm(_priv->tfm_michael);
- if (_priv && _priv->tfm_arc4)
crypto_free_tfm(_priv->tfm_arc4);
+ }
kfree(priv);
module_put(THIS_MODULE);
}
--- linux-2.6.12-rc3-mm1-orig/drivers/net/wireless/hostap/hostap_crypt_wep.c 2005-04-30 18:37:01.000000000 +0200
+++ linux-2.6.12-rc3-mm1/drivers/net/wireless/hostap/hostap_crypt_wep.c 2005-04-30 19:41:06.000000000 +0200
@@ -69,8 +69,7 @@ static void * prism2_wep_init(int keyidx

fail:
if (priv) {
- if (priv->tfm)
- crypto_free_tfm(priv->tfm);
+ crypto_free_tfm(priv->tfm);
kfree(priv);
}
module_put(THIS_MODULE);
@@ -81,7 +80,7 @@ fail:
static void prism2_wep_deinit(void *priv)
{
struct prism2_wep_data *_priv = priv;
- if (_priv && _priv->tfm)
+ if (_priv)
crypto_free_tfm(_priv->tfm);
kfree(priv);
module_put(THIS_MODULE);
--- linux-2.6.12-rc3-mm1-orig/net/ieee80211/ieee80211_crypt_ccmp.c 2005-04-30 18:37:16.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/ieee80211/ieee80211_crypt_ccmp.c 2005-04-30 19:41:06.000000000 +0200
@@ -96,8 +96,7 @@ static void * ieee80211_ccmp_init(int ke

fail:
if (priv) {
- if (priv->tfm)
- crypto_free_tfm(priv->tfm);
+ crypto_free_tfm(priv->tfm);
kfree(priv);
}

@@ -108,7 +107,7 @@ fail:
static void ieee80211_ccmp_deinit(void *priv)
{
struct ieee80211_ccmp_data *_priv = priv;
- if (_priv && _priv->tfm)
+ if (_priv)
crypto_free_tfm(_priv->tfm);
kfree(priv);
}
--- linux-2.6.12-rc3-mm1-orig/net/ieee80211/ieee80211_crypt_tkip.c 2005-04-30 18:37:17.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/ieee80211/ieee80211_crypt_tkip.c 2005-04-30 19:41:06.000000000 +0200
@@ -90,10 +90,8 @@ static void * ieee80211_tkip_init(int ke

fail:
if (priv) {
- if (priv->tfm_michael)
- crypto_free_tfm(priv->tfm_michael);
- if (priv->tfm_arc4)
- crypto_free_tfm(priv->tfm_arc4);
+ crypto_free_tfm(priv->tfm_michael);
+ crypto_free_tfm(priv->tfm_arc4);
kfree(priv);
}

@@ -104,10 +102,10 @@ fail:
static void ieee80211_tkip_deinit(void *priv)
{
struct ieee80211_tkip_data *_priv = priv;
- if (_priv && _priv->tfm_michael)
+ if (_priv) {
crypto_free_tfm(_priv->tfm_michael);
- if (_priv && _priv->tfm_arc4)
crypto_free_tfm(_priv->tfm_arc4);
+ }
kfree(priv);
}

--- linux-2.6.12-rc3-mm1-orig/net/ieee80211/ieee80211_crypt_wep.c 2005-04-30 18:37:17.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/ieee80211/ieee80211_crypt_wep.c 2005-04-30 19:41:06.000000000 +0200
@@ -64,8 +64,7 @@ static void * prism2_wep_init(int keyidx

fail:
if (priv) {
- if (priv->tfm)
- crypto_free_tfm(priv->tfm);
+ crypto_free_tfm(priv->tfm);
kfree(priv);
}
return NULL;
@@ -75,7 +74,7 @@ fail:
static void prism2_wep_deinit(void *priv)
{
struct prism2_wep_data *_priv = priv;
- if (_priv && _priv->tfm)
+ if (_priv)
crypto_free_tfm(_priv->tfm);
kfree(priv);
}
--- linux-2.6.12-rc3-mm1-orig/net/ipv4/ah4.c 2005-04-30 18:25:32.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/ipv4/ah4.c 2005-04-30 19:41:06.000000000 +0200
@@ -263,10 +263,8 @@ static int ah_init_state(struct xfrm_sta

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;
@@ -279,14 +277,10 @@ static void ah_destroy(struct xfrm_state
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);
}

--- linux-2.6.12-rc3-mm1-orig/net/ipv4/esp4.c 2005-04-30 18:25:32.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/ipv4/esp4.c 2005-04-30 19:41:06.000000000 +0200
@@ -343,22 +343,18 @@ static void esp_destroy(struct xfrm_stat
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);
}

--- linux-2.6.12-rc3-mm1-orig/net/ipv4/ipcomp.c 2005-04-30 18:25:32.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/ipv4/ipcomp.c 2005-04-30 20:04:42.000000000 +0200
@@ -296,8 +296,7 @@ static void ipcomp_free_scratches(void)

for_each_cpu(i) {
void *scratch = *per_cpu_ptr(scratches, i);
- if (scratch)
- vfree(scratch);
+ vfree(scratch);
}

free_percpu(scratches);
@@ -350,8 +349,7 @@ static void ipcomp_free_tfms(struct cryp

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);
}
--- linux-2.6.12-rc3-mm1-orig/net/ipv6/addrconf.c 2005-04-30 18:37:17.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/ipv6/addrconf.c 2005-04-30 19:59:34.000000000 +0200
@@ -2966,8 +2966,7 @@ static int inet6_fill_ifinfo(struct sk_b

nlmsg_failure:
rtattr_failure:
- if (array)
- kfree(array);
+ kfree(array);
skb_trim(skb, b - skb->data);
return -1;
}
@@ -3604,10 +3603,8 @@ 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
--- linux-2.6.12-rc3-mm1-orig/net/ipv6/ah6.c 2005-04-30 18:25:32.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/ipv6/ah6.c 2005-04-30 20:01:39.000000000 +0200
@@ -217,12 +217,11 @@ static int ah6_output(struct xfrm_state
err = 0;

memcpy(top_iph, tmp_base, sizeof(tmp_base));
- if (tmp_ext) {
+ if (tmp_ext)
memcpy(&top_iph->daddr, tmp_ext, extlen);
-error_free_iph:
- kfree(tmp_ext);
- }

+error_free_iph:
+ kfree(tmp_ext);
error:
return err;
}
@@ -306,7 +305,6 @@ static int ah6_input(struct xfrm_state *
skb_pull(skb, hdr_len);
skb->h.raw = skb->data;

-
kfree(tmp_hdr);

return nexthdr;
@@ -402,10 +400,8 @@ static int ah6_init_state(struct xfrm_st

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;
@@ -418,14 +414,12 @@ static void ah6_destroy(struct xfrm_stat
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);
}

--- linux-2.6.12-rc3-mm1-orig/net/ipv6/esp6.c 2005-04-30 18:25:32.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/ipv6/esp6.c 2005-04-30 19:41:06.000000000 +0200
@@ -277,22 +277,18 @@ static void esp6_destroy(struct xfrm_sta
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);
}

--- linux-2.6.12-rc3-mm1-orig/net/ipv6/ipcomp6.c 2005-04-30 18:25:33.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/ipv6/ipcomp6.c 2005-04-30 20:05:02.000000000 +0200
@@ -130,8 +130,7 @@ static int ipcomp6_input(struct xfrm_sta
out_put_cpu:
put_cpu();
out:
- if (tmp_hdr)
- kfree(tmp_hdr);
+ kfree(tmp_hdr);
if (err)
goto error_out;
return nexthdr;
@@ -292,8 +291,7 @@ static void ipcomp6_free_scratches(void)

for_each_cpu(i) {
void *scratch = *per_cpu_ptr(scratches, i);
- if (scratch)
- vfree(scratch);
+ vfree(scratch);
}

free_percpu(scratches);
@@ -346,8 +344,7 @@ static void ipcomp6_free_tfms(struct cry

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);
}
--- linux-2.6.12-rc3-mm1-orig/net/sctp/endpointola.c 2005-04-30 18:37:17.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/sctp/endpointola.c 2005-04-30 19:41:06.000000000 +0200
@@ -195,8 +195,7 @@ static void sctp_endpoint_destroy(struct
sctp_unhash_endpoint(ep);

/* Free up the HMAC transform. */
- if (sctp_sk(ep->base.sk)->hmac)
- sctp_crypto_free_tfm(sctp_sk(ep->base.sk)->hmac);
+ sctp_crypto_free_tfm(sctp_sk(ep->base.sk)->hmac);

/* Cleanup. */
sctp_inq_free(&ep->base.inqueue);
--- linux-2.6.12-rc3-mm1-orig/net/sctp/socket.c 2005-04-30 18:37:17.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/sctp/socket.c 2005-04-30 19:41:06.000000000 +0200
@@ -4022,8 +4022,7 @@ out:
sctp_release_sock(sk);
return err;
cleanup:
- if (tfm)
- sctp_crypto_free_tfm(tfm);
+ sctp_crypto_free_tfm(tfm);
goto out;
}

--- linux-2.6.12-rc3-mm1-orig/net/sunrpc/auth_gss/gss_krb5_crypto.c 2005-03-02 08:37:47.000000000 +0100
+++ linux-2.6.12-rc3-mm1/net/sunrpc/auth_gss/gss_krb5_crypto.c 2005-04-30 19:41:06.000000000 +0200
@@ -201,8 +201,7 @@ make_checksum(s32 cksumtype, char *heade
crypto_digest_final(tfm, cksum->data);
code = 0;
out:
- if (tfm)
- crypto_free_tfm(tfm);
+ crypto_free_tfm(tfm);
return code;
}

--- linux-2.6.12-rc3-mm1-orig/net/sunrpc/auth_gss/gss_krb5_mech.c 2005-04-30 18:25:34.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/sunrpc/auth_gss/gss_krb5_mech.c 2005-04-30 19:41:06.000000000 +0200
@@ -185,12 +185,9 @@ static void
gss_delete_sec_context_kerberos(void *internal_ctx) {
struct krb5_ctx *kctx = internal_ctx;

- if (kctx->seq)
- crypto_free_tfm(kctx->seq);
- if (kctx->enc)
- crypto_free_tfm(kctx->enc);
- if (kctx->mech_used.data)
- kfree(kctx->mech_used.data);
+ crypto_free_tfm(kctx->seq);
+ crypto_free_tfm(kctx->enc);
+ kfree(kctx->mech_used.data);
kfree(kctx);
}

--- linux-2.6.12-rc3-mm1-orig/net/sunrpc/auth_gss/gss_spkm3_mech.c 2005-04-30 18:25:34.000000000 +0200
+++ linux-2.6.12-rc3-mm1/net/sunrpc/auth_gss/gss_spkm3_mech.c 2005-04-30 20:03:28.000000000 +0200
@@ -121,14 +121,14 @@ get_key(const void *p, const void *end,
goto out_err_free_tfm;
}

- if(key.len > 0)
+ if (key.len > 0)
kfree(key.data);
return p;

out_err_free_tfm:
crypto_free_tfm(*res);
out_err_free_key:
- if(key.len > 0)
+ if (key.len > 0)
kfree(key.data);
p = ERR_PTR(-EINVAL);
out_err:
@@ -214,14 +214,10 @@ static void
gss_delete_sec_context_spkm3(void *internal_ctx) {
struct spkm3_ctx *sctx = internal_ctx;

- if(sctx->derived_integ_key)
- crypto_free_tfm(sctx->derived_integ_key);
- if(sctx->derived_conf_key)
- crypto_free_tfm(sctx->derived_conf_key);
- if(sctx->share_key.data)
- kfree(sctx->share_key.data);
- if(sctx->mech_used.data)
- kfree(sctx->mech_used.data);
+ crypto_free_tfm(sctx->derived_integ_key);
+ crypto_free_tfm(sctx->derived_conf_key);
+ kfree(sctx->share_key.data);
+ kfree(sctx->mech_used.data);
kfree(sctx);
}




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