diff options
| author | Nicolas Palix <npalix@diku.dk> | 2008-12-03 21:10:57 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-12-04 09:17:22 -0800 |
| commit | c2e27c359ab76fecbbd292dbfc0bcfa8399afdd9 (patch) | |
| tree | d5edacb837ce1d1bc35aa2827e00b314e679f400 /arch | |
| parent | a8c601ca21e790f6a9d996bb0bf31f7496eb9509 (diff) | |
sparc: Add missing of_node_put
of_node_put is needed before discarding a value received from
of_find_node_by_name, eg in error handling code or when the device
node is no longer used.
The semantic match that catches the bug is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression struct device_node *n;
position p1, p2;
struct device_node *n1;
statement S;
identifier f;
expression E;
expression *ptr != NULL;
@@
n@p1 = of_find_node_by_name(...)
...
if (!n) S
... when != of_node_put(n)
when != n1 = f(n,...)
when != E = n
when any
when strict
(
return \(0\|<+...n...+>\|ptr\);
|
return@p2 ...;
|
of_node_put(n);
|
n1 = f(n,...)
|
E = n
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
print "* file: %s of_find_node_by_name %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: Nicolas Palix <npalix@diku.dk>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sparc/kernel/sun4c_irq.c | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/sun4d_irq.c | 1 | ||||
| -rw-r--r-- | arch/sparc/kernel/sun4m_irq.c | 2 |
3 files changed, 5 insertions, 0 deletions
diff --git a/arch/sparc/kernel/sun4c_irq.c b/arch/sparc/kernel/sun4c_irq.c index 5dc8a576948..bc3adbf79c6 100644 --- a/arch/sparc/kernel/sun4c_irq.c +++ b/arch/sparc/kernel/sun4c_irq.c @@ -160,6 +160,7 @@ static void __init sun4c_init_timers(irq_handler_t counter_fn) sun4c_timers = (void __iomem *) (unsigned long) addr[0]; irq = of_get_property(dp, "intr", NULL); + of_node_put(dp); if (!irq) { prom_printf("sun4c_init_timers: No intr property\n"); prom_halt(); @@ -200,6 +201,7 @@ void __init sun4c_init_IRQ(void) } addr = of_get_property(dp, "address", NULL); + of_node_put(dp); if (!addr) { prom_printf("sun4c_init_IRQ: No address property\n"); prom_halt(); diff --git a/arch/sparc/kernel/sun4d_irq.c b/arch/sparc/kernel/sun4d_irq.c index d3cb76ce418..1c98821e1a6 100644 --- a/arch/sparc/kernel/sun4d_irq.c +++ b/arch/sparc/kernel/sun4d_irq.c @@ -508,6 +508,7 @@ static void __init sun4d_init_timers(irq_handler_t counter_fn) * bootbus. */ reg = of_get_property(dp, "reg", NULL); + of_node_put(dp); if (!reg) { prom_printf("sun4d_init_timers: No reg property\n"); prom_halt(); diff --git a/arch/sparc/kernel/sun4m_irq.c b/arch/sparc/kernel/sun4m_irq.c index f10317179ee..301892e2d71 100644 --- a/arch/sparc/kernel/sun4m_irq.c +++ b/arch/sparc/kernel/sun4m_irq.c @@ -374,6 +374,7 @@ static void __init sun4m_init_timers(irq_handler_t counter_fn) } addr = of_get_property(dp, "address", &len); + of_node_put(dp); if (!addr) { printk(KERN_ERR "sun4m_init_timers: No 'address' prop.\n"); return; @@ -437,6 +438,7 @@ void __init sun4m_init_IRQ(void) } addr = of_get_property(dp, "address", &len); + of_node_put(dp); if (!addr) { printk(KERN_ERR "sun4m_init_IRQ: No 'address' prop.\n"); return; |