of/irq: Fix device node refcount leak in of_irq_get_affinity()

Browse source

of_irq_parse_one() raises the refcount of the interrupt controller node
on success, and of_irq_get_affinity() returns without putting it, so
every call past the parse leaks one reference. It is reached from
platform_get_irq_affinity(), used by arm_pmu, arm_spe_pmu and
coresight-trbe.

Put it once irq_populate_fwspec_info() has run: no in-tree
->get_fwspec_info() returns a mask that lives in the node.

Fixes: 5404f5c06d ("of/irq: Add interrupt affinity reporting interface")
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Link: https://patch.msgid.link/20260826112234.1033974-1-fuad.tabba@linux.dev
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

...

This commit is contained in:

Fuad Tabba 2026-08-26 12:22:34 +01:00 • committed by Rob Herring (Arm)

parent 660ee6792e

commit fe66c3ff85

1 changed files with 3 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

drivers/of/irq.c

View file