[PATCH v4 0/2] media: rcar-isp: fix core IRQ and probe error handling

[Myeonghun Pak]

Fix the core IRQ lifetime before changing resource-error handling.
Patch 1 delays IRQ registration and releases it after I/O drain but
before RPPX1 destruction. Patch 2 distinguishes an absent optional core
from initialization failures and preserves deferred probing.

Apply in this order so resource-error cleanup cannot invoke the shared
IRQ handler after core->base is cleared.

Both stages: Clang 23.1.4, ARM64 W=1 object builds. No hardware testing.
AI assistance: Codex prepared the split and descriptions; independent
Codex agents reviewed the code.

Myeonghun Pak (2):
  media: rcar-isp: release the core IRQ before destroying RPPX1
  media: rcar-isp: distinguish absent cores from probe failures

 drivers/media/platform/renesas/rcar-isp/core.c     |   44 +++++++++++++-------
 .../media/platform/renesas/rcar-isp/risp-core.h    |    2 +
 2 files changed, 30 insertions(+), 16 deletions(-)

base-commit: d48723711bae9b8cdc56719c448ba42fef28cbee