From: Jani Nikula <jani.nikula@linux.intel.com>
To: Maarten Lankhorst <dev@lankhorst.se>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Runyu Xiao <runyu.xiao@seu.edu.cn>
Cc: rodrigo.vivi@intel.com, joonas.lahtinen@linux.intel.com,
tursulin@ursulin.net, airlied@gmail.com, simona@ffwll.ch,
matthew.brost@intel.com, uma.shankar@intel.com,
pierre-louis.bossart@linux.dev, jerome.anand@intel.com,
tiwai@suse.de, intel-gfx@lists.freedesktop.org,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
jianhao.xu@seu.edu.cn
Subject: Re: [PATCH v3] drm/i915/display: Fix intel_lpe_audio_irq_handler for PREEMPT-RT
Date: Wed, 03 Jun 2026 11:27:23 +0300 [thread overview]
Message-ID: <41760e1def08cbf51bf868a7ebf393e0d9e59125@intel.com> (raw)
In-Reply-To: <3e012936-8493-43c8-b547-17ae40e6ef74@lankhorst.se>
On Tue, 02 Jun 2026, Maarten Lankhorst <dev@lankhorst.se> wrote:
> Thanks, pushed!
Where are the CI results?
>
> On 6/2/26 08:29, Sebastian Andrzej Siewior wrote:
>> On 2026-06-02 08:45:15 [+0800], Runyu Xiao wrote:
>>> From: Maarten Lankhorst <dev@lankhorst.se>
>>>
>>> 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@lankhorst.se>
>>> 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>
>>
>> Sebastian
>
--
Jani Nikula, Intel
next prev parent reply other threads:[~2026-06-03 8:27 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-02 0:45 [PATCH v3] drm/i915/display: Fix intel_lpe_audio_irq_handler for PREEMPT-RT Runyu Xiao
2026-06-02 6:29 ` Sebastian Andrzej Siewior
2026-06-02 12:33 ` Maarten Lankhorst
2026-06-03 8:27 ` Jani Nikula [this message]
2026-06-03 13:28 ` Runyu Xiao
2026-06-04 3:25 ` Claude review: " Claude Code Review Bot
2026-06-04 3:25 ` Claude Code Review Bot
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