diff options
| author |   Jesper Juhl <juhl-lkml@dif.dk> | 2005-05-03 14:33:27 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2005-05-03 14:33:27 -0700 |
| commit | 6a5d362120a61a719095443194cc2d5e9a7027dd (patch) | |
| tree | 7cab13ff0d252b96f4eeda7475f805ffdd1c0c4a /drivers/net/wan/x25_asy.c | |
| parent | [RTNETLINK] Cleanup rtnetlink_link tables (diff) | |
| download | linux-dev-6a5d362120a61a719095443194cc2d5e9a7027dd.tar.xz linux-dev-6a5d362120a61a719095443194cc2d5e9a7027dd.zip | |
[WAN]: kfree of NULL pointer is valid
kfree(0) is perfectly valid, checking pointers for NULL before calling
kfree() on them is redundant. The patch below cleans away a few such
redundant checks (and while I was around some of those bits I couldn't
stop myself from making a few tiny whitespace changes as well).
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Acked-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/wan/x25_asy.c | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c index 8c5cfcb55826..1c540d825551 100644 --- a/drivers/net/wan/x25_asy.c +++ b/drivers/net/wan/x25_asy.c @@ -107,13 +107,9 @@ static struct x25_asy *x25_asy_alloc(void) static void x25_asy_free(struct x25_asy *sl) { /* Free all X.25 frame buffers. */ - if (sl->rbuff) { - kfree(sl->rbuff); - } + kfree(sl->rbuff); sl->rbuff = NULL; - if (sl->xbuff) { - kfree(sl->xbuff); - } + kfree(sl->xbuff); sl->xbuff = NULL; if (!test_and_clear_bit(SLF_INUSE, &sl->flags)) { @@ -134,10 +130,8 @@ static int x25_asy_change_mtu(struct net_device *dev, int newmtu) { printk("%s: unable to grow X.25 buffers, MTU change cancelled.\n", dev->name); - if (xbuff != NULL) - kfree(xbuff); - if (rbuff != NULL) - kfree(rbuff); + kfree(xbuff); + kfree(rbuff); return -ENOMEM; } @@ -169,10 +163,8 @@ static int x25_asy_change_mtu(struct net_device *dev, int newmtu) spin_unlock_bh(&sl->lock); - if (xbuff != NULL) - kfree(xbuff); - if (rbuff != NULL) - kfree(rbuff); + kfree(xbuff); + kfree(rbuff); return 0; } |