diff options
| author | Peter Senna Tschudin <peter.senna@gmail.com> | 2012-09-12 19:06:45 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-27 00:20:40 +0400 |
| commit | 08b79dd10bb24f5fb12446d21d32c87a8136c770 (patch) | |
| tree | 831faf9cd5d7f9dade77075ce99cd682395b8be5 /drivers/char/mmtimer.c | |
| parent | f8885c26d59e683185002271108e8acb812fcd07 (diff) | |
| download | linux-08b79dd10bb24f5fb12446d21d32c87a8136c770.tar.xz | |
drivers/char/mmtimer.c: Remove useless kfree
Remove useless kfree() and clean up code related to the removal.
The semantic patch that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
position p1,p2;
expression x;
@@
if (x@p1 == NULL) { ... kfree@p2(x); ... return ...; }
@unchanged exists@
position r.p1,r.p2;
expression e <= r.x,x,e1;
iterator I;
statement S;
@@
if (x@p1 == NULL) { ... when != I(x,...) S
when != e = e1
when != e += e1
when != e -= e1
when != ++e
when != --e
when != e++
when != e--
when != &e
kfree@p2(x); ... return ...; }
@ok depends on unchanged exists@
position any r.p1;
position r.p2;
expression x;
@@
... when != true x@p1 == NULL
kfree@p2(x);
@depends on !ok && unchanged@
position r.p2;
expression x;
@@
*kfree@p2(x);
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char/mmtimer.c')
| -rw-r--r-- | drivers/char/mmtimer.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/char/mmtimer.c b/drivers/char/mmtimer.c index 33dc2298af73..3d6c0671e996 100644 --- a/drivers/char/mmtimer.c +++ b/drivers/char/mmtimer.c @@ -826,7 +826,7 @@ static int __init mmtimer_init(void) /* Allocate list of node ptrs to mmtimer_t's */ timers = kzalloc(sizeof(struct mmtimer_node)*maxn, GFP_KERNEL); - if (timers == NULL) { + if (!timers) { printk(KERN_ERR "%s: failed to allocate memory for device\n", MMTIMER_NAME); goto out3; @@ -848,7 +848,6 @@ static int __init mmtimer_init(void) return 0; out3: - kfree(timers); misc_deregister(&mmtimer_miscdev); out2: free_irq(SGI_MMTIMER_VECTOR, NULL); |