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[SPARC64]: check for possible NULL pointer dereference

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This patch adds checking for possible NULL pointer dereference
if of_find_property() failed.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cyrill Gorcunov 2007-11-20 17:32:19 -08:00 committed by David S. Miller
parent 794b26e060
commit 75c6d1410c
1 changed files with 4 additions and 0 deletions
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4
arch/sparc64/kernel/pci_sun4v.c
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@ -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;