From: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
This patch adds checking for possible NULL pointer dereference
if of_find_property() failed.
Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
---
I'm not sure about the message being printed in worst case.
Check please.
arch/sparc64/kernel/pci_sun4v.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index 8c4875b..e587a37 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;
-
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