From 75c6d1410caa6fea861ef3802e8b186f7685f235 Mon Sep 17 00:00:00 2001 From: Cyrill Gorcunov Date: Tue, 20 Nov 2007 17:32:19 -0800 Subject: [PATCH] [SPARC64]: check for possible NULL pointer dereference This patch adds checking for possible NULL pointer dereference if of_find_property() failed. Signed-off-by: Cyrill Gorcunov Signed-off-by: David S. Miller --- arch/sparc64/kernel/pci_sun4v.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c index 8c4875bdb4a8..e587a372f3fe 100644 --- a/arch/sparc64/kernel/pci_sun4v.c +++ b/arch/sparc64/kernel/pci_sun4v.c @@ -1022,6 +1022,10 @@ void __init sun4v_pci_init(struct device_node *dp, char *model_name) } prop = of_find_property(dp, "reg", NULL); + if (!prop) { + prom_printf("SUN4V_PCI: Could not find config registers\n"); + prom_halt(); + } regs = prop->value; devhandle = (regs->phys_addr >> 32UL) & 0x0fffffff; -- 2.20.1