[PATCH v2 0/2] hw/arm: Fix STM32L4x5 EXTI to CPU irq fan-in connections

[Inès Varhol]

The original code was connecting several outbounds qemu_irqs to the
same qemu_irq without using a TYPE_OR_IRQ.

This patch fixes the issue by using OR gates when necessary (1st commit).

I attempted to check that the problem is fixed by using a QTest (2nd commit)
but actually the test is passing even before the fix :
when any fan-in input line is raised, the output is raised too.

Changes from v1 :
- using SoC State fields for EXTI OR gates
- correcting length of array `exti_or_gates_num_lines_in`
- using a for loop in the test for more clarity
- correcting typo in test comment

Fixes: 52671f69f7a4 ("[PATCH v8 0/3] Add device STM32L4x5 EXTI")
Signed-off-by: Inès Varhol <ines.varhol@telecom-paris.fr>

Inès Varhol (2):
  hw/arm: Use TYPE_OR_IRQ when connecting STM32L4x5 EXTI fan-in IRQs
  tests/qtest: Check that EXTI fan-in irqs are correctly connected

 include/hw/arm/stm32l4x5_soc.h    |  4 ++
 hw/arm/stm32l4x5_soc.c            | 80 +++++++++++++++++++++++++++----
 tests/qtest/stm32l4x5_exti-test.c | 37 ++++++++++++++
 3 files changed, 111 insertions(+), 10 deletions(-)

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2.43.2