6.15-stable review patch. If anyone has any objections, please let me know.
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From: Boris Brezillon boris.brezillon@collabora.com
[ Upstream commit 8ba64cf2f358079d09faba7529aad2b0a46c7903 ]
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
Changes in v3: - Add Steve's R-b
Fixes: 647810ec2476 ("drm/panthor: Add the MMU/VM logical block") Reviewed-by: Liviu Dudau liviu.dudau@arm.com Reviewed-by: Steven Price steven.price@arm.com Link: https://lore.kernel.org/r/20250404080933.2912674-4-boris.brezillon@collabora... Signed-off-by: Boris Brezillon boris.brezillon@collabora.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 12a02e28f50fd..7cca97d298ea1 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); }