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drm/i915/display: Fix intel_lpe_audio_irq_handler for PREEMPT-RT

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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.

Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://patch.msgid.link/20260602004515.1907422-1-runyu.xiao@seu.edu.cn
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
This commit is contained in:
Maarten Lankhorst 2026-06-02 08:45:15 +08:00
parent 3f2596e38d
commit 9cc47acc2f
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/display/intel_lpe_audio.c
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@ -262,7 +262,7 @@ void intel_lpe_audio_irq_handler(struct intel_display *display)
if (!HAS_LPE_AUDIO(display))
return;
ret = generic_handle_irq(display->audio.lpe.irq);
ret = generic_handle_irq_safe(display->audio.lpe.irq);
if (ret)
drm_err_ratelimited(display->drm,
"error handling LPE audio irq: %d\n", ret);