[PATCH v2 0/4] mfd: tps65217: Handle IRQ initialization errors

[Жамбакиев Радий Рикардинович]

This series fixes the error handling in the IRQ setup and teardown
paths of the TPS65217 MFD driver.

Patch 1 propagates the error from tps65217_irq_init() in probe, so a
failed irq_domain creation does not leave a NULL domain behind that
tps65217_remove() would later dereference.
Patch 2 propagates the error of the initial register write in
tps65217_irq_init(), so a failed mask write cannot leave the software
mask out of sync with the hardware.
Patch 3 fixes the irq_domain leak and the resulting 
use-after-free when probe fails after the domain has been created.
Patch 4 fixes the NULL pointer dereference in the remove callback on
devices probed without an interrupt, quiesces the parent interrupt
before the domain is torn down, and balances enable_irq_wake().

Changes since v1:
- added "mfd: tps65217: Fix irq_domain leak and use-after-free on probe
  failure"
- added "mfd: tps65217: Fix NULL pointer dereference in remove callback"

Patches 3 and 4 fix the in-scope findings of the Sashiko AI review.
The remaining findings, in my opinion, are out of scope for this series and may be
addressed in separate follow-up patches.

Radiy Zhambakiev (4):
  mfd: tps65217: Fix NULL pointer dereference on IRQ init failure
  mfd: tps65217: Check return value when masking interrupt sources
  mfd: tps65217: Fix irq_domain leak and use-after-free on probe failure
  mfd: tps65217: Fix NULL pointer dereference in remove callback

 drivers/mfd/tps65217.c | 68 ++++++++++++++++++++++++++++++------------
 1 file changed, 49 insertions(+), 19 deletions(-)

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2.53.0