ARM: davinci: Check for NULL return from irq_alloc_generic_chip
Avoid NULL dereference of irq_alloc_generic_chip return in low memory conditions. Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
parent
f299bb9527
commit
33e1e5e317
|
@ -52,6 +52,12 @@ davinci_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
|
|||
struct irq_chip_type *ct;
|
||||
|
||||
gc = irq_alloc_generic_chip("AINTC", 1, irq_start, base, handle_edge_irq);
|
||||
if (!gc) {
|
||||
pr_err("%s: irq_alloc_generic_chip for IRQ %u failed\n",
|
||||
__func__, irq_start);
|
||||
return;
|
||||
}
|
||||
|
||||
ct = gc->chip_types;
|
||||
ct->chip.irq_ack = irq_gc_ack;
|
||||
ct->chip.irq_mask = irq_gc_mask_clr_bit;
|
||||
|
|
Loading…
Reference in a new issue