[PATCHv2 0/3] watchdog: sama5d4: fix IRQ and timeout bugs, use platform_get_irq_optional

[Rosen Penev <rosenp@gmail.com>]

This series fixes three issues in the sama5d4 watchdog driver:

Patch 1: Return IRQ_NONE when the status register indicates no watchdog
interrupt is pending, and pass the configured timeout (not the hardcoded
default) to sama5d4_wdt_init().

Patch 2: Replace irq_of_parse_and_map() with platform_get_irq_optional()
for simpler error handling and EPROBE_DEFER support.

Patch 3: Move platform_set_drvdata() before devm_request_irq() to prevent
a NULL pointer dereference in the interrupt handler if the shared System
IRQ fires immediately after registration.

v2: address sashiko review

Rosen Penev (3):
  watchdog: sama5d4: fix shared IRQ and hardcoded timeout issues
  watchdog: sama5d4: use platform_get_irq_optional()
  watchdog: sama5d4: fix NULL deref in irq handler

 drivers/watchdog/sama5d4_wdt.c | 32 +++++++++++++++++---------------
 1 file changed, 17 insertions(+), 15 deletions(-)

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2.54.0