[PATCH v2 05/12] drm/panfrost: Disable the AS on unhandled page faults

[Boris Brezillon]

If we don't do that, we have to wait for the job timeout to expire
before the fault jobs gets killed.

Signed-off-by: Boris Brezillon <boris.brezillon at collabora.com>
---
 drivers/gpu/drm/panfrost/panfrost_mmu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c
index 2a9bf30edc9d..d5c624e776f1 100644
--- a/drivers/gpu/drm/panfrost/panfrost_mmu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c
@@ -661,7 +661,7 @@ static irqreturn_t panfrost_mmu_irq_handler_thread(int irq, void *data)
 		if ((status & mask) == BIT(as) && (exception_type & 0xF8) == 0xC0)
 			ret = panfrost_mmu_map_fault_addr(pfdev, as, addr);
 
-		if (ret)
+		if (ret) {
 			/* terminal fault, print info about the fault */
 			dev_err(pfdev->dev,
 				"Unhandled Page fault in AS%d at VA 0x%016llX\n"
@@ -679,6 +679,10 @@ static irqreturn_t panfrost_mmu_irq_handler_thread(int irq, void *data)
 				access_type, access_type_name(pfdev, fault_status),
 				source_id);
 
+			/* Disable the MMU to stop jobs on this AS immediately */
+			panfrost_mmu_disable(pfdev, as);
+		}
+
 		status &= ~mask;
 
 		/* If we received new MMU interrupts, process them before returning. */
-- 
2.31.1