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irqchip: crossbar: Return proper error value

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crossbar_of_init always returns -ENOMEM in case of errors.
There can be other causes of failure like invalid data from
DT. So return a appropriate error value for that case.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Sricharan R <r.sricharan@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Link: https://lkml.kernel.org/r/1403766634-18543-10-git-send-email-r.sricharan@ti.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Nishanth Menon 2014-06-26 12:40:27 +05:30 committed by Jason Cooper
parent e30ef8abb3
commit edb442def9
1 changed files with 11 additions and 3 deletions
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14
drivers/irqchip/irq-crossbar.c
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@ -129,19 +129,25 @@ static const struct irq_domain_ops routable_irq_domain_ops = {
static int __init crossbar_of_init(struct device_node *node)
{
int i, size, max, reserved = 0, entry;
int i, size, max = 0, reserved = 0, entry;
const __be32 *irqsr;
int ret = -ENOMEM;
cb = kzalloc(sizeof(*cb), GFP_KERNEL);
if (!cb)
return -ENOMEM;
return ret;
cb->crossbar_base = of_iomap(node, 0);
if (!cb->crossbar_base)
goto err1;
of_property_read_u32(node, "ti,max-irqs", &max);
if (!max) {
pr_err("missing 'ti,max-irqs' property\n");
ret = -EINVAL;
goto err2;
}
cb->irq_map = kcalloc(max, sizeof(int), GFP_KERNEL);
if (!cb->irq_map)
goto err2;
@ -162,6 +168,7 @@ static int __init crossbar_of_init(struct device_node *node)
i, &entry);
if (entry > max) {
pr_err("Invalid reserved entry\n");
ret = -EINVAL;
goto err3;
}
cb->irq_map[entry] = IRQ_RESERVED;
@ -205,6 +212,7 @@ static int __init crossbar_of_init(struct device_node *node)
break;
default:
pr_err("Invalid reg-size property\n");
ret = -EINVAL;
goto err4;
break;
}
@ -243,7 +251,7 @@ err2:
iounmap(cb->crossbar_base);
err1:
kfree(cb);
return -ENOMEM;
return ret;
}
static const struct of_device_id crossbar_match[] __initconst = {