Re: [PATCH v3] drm/i915/display: Fix intel_lpe_audio_irq_handler for PREEMPT-RT

[Sebastian Andrzej Siewior]

On 2026-06-02 08:45:15 [+0800], Runyu Xiao wrote:
> From: Maarten Lankhorst <dev@xxxxxxxxxxxx>
> 
> The LPE audio interrupt comes from the i915 interrupt handler. It
> should be in irq disabled context.
> 
> With PREEMPT_RT enabled, the IRQ handler is threaded.
> Because intel_lpe_audio_irq_handler() may be called in threaded IRQ context,
> generic_handle_irq_safe API disables the interrupts before calling LPE's
> interrupt top half handler.
> 
> This fixes braswell audio issues with RT enabled.
> 
> Signed-off-by: Maarten Lankhorst <dev@xxxxxxxxxxxx>
> Reviewed-by: Matthew Brost <matthew.brost@xxxxxxxxx>
> Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
> Signed-off-by: Runyu Xiao <runyu.xiao@xxxxxxxxxx>

Reviewed-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>

Sebastian