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checks: Add interrupt provider test

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An interrupt provider (an actual interrupt-controller node or an
interrupt nexus) should have both #address-cells and #interrupt-cells
properties explicitly defined.

Add an extra test for this. We check for the #interrupt-cells property
already, but this does not cover every controller so far, only those that
get referenced by an interrupts property in some node. Also we miss
interrupt nexus nodes.

A missing #address-cells property is less critical, but creates
ambiguities when used in interrupt-map properties, so warn about this as
well now.
This removes the now redundant warning in the existing interrupts test.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Message-Id: <20200515141827.27957-2-andre.przywara@arm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Andre Przywara 2020-05-15 15:18:25 +01:00 • committed by David Gibson
parent 85e5d83984
commit 81e0919a3e
3 changed files with 32 additions and 1 deletions
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25
checks.c
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@ -1547,6 +1547,28 @@ static bool node_is_interrupt_provider(struct node *node)
return false;
}
static void check_interrupt_provider(struct check *c,
struct dt_info *dti,
struct node *node)
{
struct property *prop;
if (!node_is_interrupt_provider(node))
return;
prop = get_property(node, "#interrupt-cells");
if (!prop)
FAIL(c, dti, node,
"Missing #interrupt-cells in interrupt provider");
prop = get_property(node, "#address-cells");
if (!prop)
FAIL(c, dti, node,
"Missing #address-cells in interrupt provider");
}
WARNING(interrupt_provider, check_interrupt_provider, NULL);
static void check_interrupts_property(struct check *c,
struct dt_info *dti,
struct node *node)
@ -1604,7 +1626,7 @@ static void check_interrupts_property(struct check *c,
prop = get_property(irq_node, "#interrupt-cells");
if (!prop) {
FAIL(c, dti, irq_node, "Missing #interrupt-cells in interrupt-parent");
/* We warn about that already in another test. */
return;
}
@ -1828,6 +1850,7 @@ static struct check *check_table[] = {
&deprecated_gpio_property,
&gpios_property,
&interrupts_property,
&interrupt_provider,
&alias_paths,