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irqchip/gic: Don't initialise chip if mapping IO space fails

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If we fail to map the address space for the GIC distributor or CPU
interface, then don't attempt to initialise the chip, just WARN and
return.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Jon Hunter 2016-05-10 16:14:40 +01:00 committed by Marc Zyngier
parent 992345a58e
commit 26acfe7463
1 changed files with 6 additions and 2 deletions
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8
drivers/irqchip/irq-gic.c
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@ -1209,10 +1209,14 @@ gic_of_init(struct device_node *node, struct device_node *parent)
return -ENODEV; return -ENODEV;
dist_base = of_iomap(node, 0); dist_base = of_iomap(node, 0);
WARN(!dist_base, "unable to map gic dist registers\n"); if (WARN(!dist_base, "unable to map gic dist registers\n"))
return -ENOMEM;
cpu_base = of_iomap(node, 1); cpu_base = of_iomap(node, 1);
WARN(!cpu_base, "unable to map gic cpu registers\n"); if (WARN(!cpu_base, "unable to map gic cpu registers\n")) {
iounmap(dist_base);
return -ENOMEM;
}
/* /*
* Disable split EOI/Deactivate if either HYP is not available * Disable split EOI/Deactivate if either HYP is not available