From c2e27c359ab76fecbbd292dbfc0bcfa8399afdd9 Mon Sep 17 00:00:00 2001 From: Nicolas Palix Date: Wed, 3 Dec 2008 21:10:57 -0800 Subject: 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/) // @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) // Signed-off-by: Nicolas Palix Signed-off-by: Julia Lawall Signed-off-by: David S. Miller --- arch/sparc/kernel/sun4c_irq.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/sparc/kernel/sun4c_irq.c') diff --git a/arch/sparc/kernel/sun4c_irq.c b/arch/sparc/kernel/sun4c_irq.c index 5dc8a5769489..bc3adbf79c6a 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(); -- cgit v1.2.3