On 1/27/22 2:33 PM, Sebastian Andrzej Siewior wrote:

generic_handle_irq() is invoked from a regular interrupt service
routing. This handler will become a forced-threaded handler on

   s/routing/routine/?

PREEMPT_RT and will be invoked with enabled interrupts. The
generic_handle_irq() must be invoked with disabled interrupts in order
to avoid deadlocks.

Instead of manually disabling interrupts before invoking use
generic_handle_irq() which can be invoked with enabled and disabled
interrupts.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

[...]

MBR, Sergey