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drm/panthor: Fix panthor_pwr_unplug()

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We can't call panthor_pwr_irq_suspend() if the device is suspended,
or this leads to a hang when the IOMEM region is accessed while the
clks are disabled. Do what other sub-components do and conditionally
call panthor_pwr_irq_suspend() if we know the PWR regbank block is
accessible.

Fixes: c27787f2b7 ("drm/panthor: Introduce panthor_pwr API and power control framework")
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patch.msgid.link/20260625-panthor-misc-fixes-v1-7-b67ed973fea6@collabora.com
This commit is contained in:
Boris Brezillon 2026-06-25 14:40:33 +02:00 committed by Liviu Dudau
parent 6fec8b4734
commit e62179fd3e
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/panthor/panthor_pwr.c
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@ -453,7 +453,8 @@ void panthor_pwr_unplug(struct panthor_device *ptdev)
return;
/* Make sure the IRQ handler is not running after that point. */
panthor_pwr_irq_suspend(&ptdev->pwr->irq);
if (!IS_ENABLED(CONFIG_PM) || pm_runtime_active(ptdev->base.dev))
panthor_pwr_irq_suspend(&ptdev->pwr->irq);
/* Wake-up all waiters. */
spin_lock_irqsave(&ptdev->pwr->reqs_lock, flags);