| From | Jon Hunter <> | Subject | [PATCH 09/15] irqchip/gic: Don't initialise chip if mapping IO space fails | Date | Thu, 17 Mar 2016 14:19:13 +0000 |
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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> --- drivers/irqchip/irq-gic.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 6c555a2c5315..a4a13ef35c1b 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -1203,10 +1203,14 @@ gic_of_init(struct device_node *node, struct device_node *parent) return -ENODEV; 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); - 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 -- 2.1.4
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