This series makes __irq_domain_instantiate() automatically set
IRQ_DOMAIN_FLAG_DESTROY_GC when dgc_info is supplied, avoiding future
memory-leak pitfalls for new callers.

There is no runtime bug in current mainline; all existing in-tree users
already set this flag manually. Patches 2-3 remove those redundant flag
assignments from driver code which uses irq_domain_instantiate().

Note: Some drivers set IRQ_DOMAIN_FLAG_DESTROY_GC with legacy
irq_domain_create_linear() and irq_alloc_domain_generic_chips() APIs
(e.g. renesas-irqc). Those are untouched because they do not go
through __irq_domain_instantiate().

Changes since v2:
 - Drop the Fixes tag, as there is no present-day bug.
 - Turn into patchset, add driver cleanup patches.
 - Reword commit message to clarify risk applies to future callers only.

v2 thread: <https://lore.kernel.org/all/20260904070943.934476-1-fuqingshuang@kylinos.cn/>

Qingshuang Fu (3):
  irqdomain: Set IRQ_DOMAIN_FLAG_DESTROY_GC in __irq_domain_instantiate()
  irqchip/lan966x-oic: Drop redundant IRQ_DOMAIN_FLAG_DESTROY_GC
  soc/fsl/qe: qe_ports_ic: Drop redundant IRQ_DOMAIN_FLAG_DESTROY_GC

 kernel/irq/irqdomain.c                     | 1 +
 drivers/irqchip/irq-lan966x-oic.c          | 1 -
 drivers/soc/fsl/qe/qe_ports_ic.c           | 1 -
 3 files changed, 1 insertion(+), 2 deletions(-)


base-commit: df2908090cda368b01ff43709f51890076c56157
-- 
2.25.1