linux-kernel - [PATCH] drm: msm: a6x: Disable interrupts before recovery

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Date:   Mon,  2 Mar 2020 14:17:16 +0530
From:   Sharat Masetty <smasetty@...eaurora.org>
To:     freedreno@...ts.freedesktop.org
Cc:     dri-devel@...edesktop.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, jcrouse@...eaurora.org,
        Sharat Masetty <smasetty@...eaurora.org>
Subject: [PATCH] drm: msm: a6x: Disable interrupts before recovery

This patch disables interrupts in the GPU RBBM hang detect fault handler
before going to recovery.

Signed-off-by: Sharat Masetty <smasetty@...eaurora.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index dc8ec2c..4dd0f62 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -676,6 +676,9 @@ static void a6xx_fault_detect_irq(struct msm_gpu *gpu)
 		gpu_read64(gpu, REG_A6XX_CP_IB2_BASE, REG_A6XX_CP_IB2_BASE_HI),
 		gpu_read(gpu, REG_A6XX_CP_IB2_REM_SIZE));
 
+	/* Disable interrupts before going for a recovery*/
+	gpu_write(gpu, REG_A6XX_RBBM_INT_0_MASK, 0);
+
 	/* Turn off the hangcheck timer to keep it from bothering us */
 	del_timer(&gpu->hangcheck_timer);
 
-- 
1.9.1