[PATCH v2 3/5] drm/panthor: Update panthor_mmu::irq::mask when needed

[Steven Price]

On 01/04/2025 19:23, Boris Brezillon wrote:
> When we clear the faulty bits in the AS mask, we also need to update
> the panthor_mmu::irq::mask field otherwise our IRQ handler won't get
> called again until the GPU is reset.
> 
> Changes in v2:
> - Add Liviu's R-b
> 
> Fixes: 647810ec2476 ("drm/panthor: Add the MMU/VM logical block")
> Signed-off-by: Boris Brezillon <boris.brezillon at collabora.com>
> Reviewed-by: Liviu Dudau <liviu.dudau at arm.com>

Reviewed-by: Steven Price <steven.price at arm.com>

> ---
>  drivers/gpu/drm/panthor/panthor_mmu.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/panthor/panthor_mmu.c b/drivers/gpu/drm/panthor/panthor_mmu.c
> index 12a02e28f50f..7cca97d298ea 100644
> --- a/drivers/gpu/drm/panthor/panthor_mmu.c
> +++ b/drivers/gpu/drm/panthor/panthor_mmu.c
> @@ -781,6 +781,7 @@ int panthor_vm_active(struct panthor_vm *vm)
>  	if (ptdev->mmu->as.faulty_mask & panthor_mmu_as_fault_mask(ptdev, as)) {
>  		gpu_write(ptdev, MMU_INT_CLEAR, panthor_mmu_as_fault_mask(ptdev, as));
>  		ptdev->mmu->as.faulty_mask &= ~panthor_mmu_as_fault_mask(ptdev, as);
> +		ptdev->mmu->irq.mask |= panthor_mmu_as_fault_mask(ptdev, as);
>  		gpu_write(ptdev, MMU_INT_MASK, ~ptdev->mmu->as.faulty_mask);
>  	}
>