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powerpc/pseries: Add null property check to pseries_discover_pic()
The return value of of_get_property() isn't checked before it is passed to the strstr() function, if it happens that the return value is null then this will result in a null pointer being dereferenced. Add a check to see if the return value of of_get_property() is null and if it is continue straight on to the next node. Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com> Reviewed-by: Chris Smart <chris@distroguy.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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@ -235,6 +235,8 @@ static void __init pseries_discover_pic(void)
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for_each_node_by_name(np, "interrupt-controller") {
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typep = of_get_property(np, "compatible", NULL);
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if (!typep)
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continue;
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if (strstr(typep, "open-pic")) {
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pSeries_mpic_node = of_node_get(np);
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ppc_md.init_IRQ = pseries_mpic_init_IRQ;
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