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From: Jonathan Marek <jonathan@marek.ca>
To: freedreno@lists.freedesktop.org
Cc: Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Jordan Crouse <jordan@cosmicpenguin.net>,
	Akhil P Oommen <akhilpo@codeaurora.org>,
	Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>,
	Eric Anholt <eric@anholt.net>,
	Sharat Masetty <smasetty@codeaurora.org>,
	Douglas Anderson <dianders@chromium.org>,
	linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM
	ADRENO GPU),
	dri-devel@lists.freedesktop.org (open list:DRM DRIVER FOR MSM
	ADRENO GPU), linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v2 5/8] drm/msm/a6xx: avoid shadow NULL reference in failure path
Date: Thu, 13 May 2021 13:14:00 -0400	[thread overview]
Message-ID: <20210513171431.18632-6-jonathan@marek.ca> (raw)
In-Reply-To: <20210513171431.18632-1-jonathan@marek.ca>

If a6xx_hw_init() fails before creating the shadow_bo, the a6xx_pm_suspend
code referencing it will crash. Change the condition to one that avoids
this problem (note: creation of shadow_bo is behind this same condition)

Fixes: e8b0b994c3a5 ("drm/msm/a6xx: Clear shadow on suspend")
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 909e3ff08f89..ff3c328604f8 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1284,7 +1284,7 @@ static int a6xx_pm_suspend(struct msm_gpu *gpu)
 	if (ret)
 		return ret;
 
-	if (adreno_gpu->base.hw_apriv || a6xx_gpu->has_whereami)
+	if (a6xx_gpu->shadow_bo)
 		for (i = 0; i < gpu->nr_rings; i++)
 			a6xx_gpu->shadow[i] = 0;
 
-- 
2.26.1


  parent reply	other threads:[~2021-05-13 17:18 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-13 17:13 [PATCH v2 0/8] drm/msm/a6xx: add support for Adreno 660 GPU Jonathan Marek
2021-05-13 17:13 ` [PATCH v2 1/8] drm/msm: remove unused icc_path/ocmem_icc_path Jonathan Marek
2021-05-31  7:26   ` Akhil P Oommen
2021-05-13 17:13 ` [PATCH v2 2/8] drm/msm/a6xx: use AOP-initialized PDC for a650 Jonathan Marek
2021-05-31  7:24   ` Akhil P Oommen
2021-06-08 15:54     ` Jonathan Marek
2021-05-13 17:13 ` [PATCH v2 3/8] drm/msm/a6xx: fix incorrectly set uavflagprd_inv field for A650 Jonathan Marek
2021-05-31  7:33   ` Akhil P Oommen
2021-05-13 17:13 ` [PATCH v2 4/8] drm/msm/a6xx: update/fix CP_PROTECT initialization Jonathan Marek
2021-05-31  8:09   ` Akhil P Oommen
2021-05-13 17:14 ` Jonathan Marek [this message]
2021-05-31  9:25   ` [PATCH v2 5/8] drm/msm/a6xx: avoid shadow NULL reference in failure path Akhil P Oommen
2021-05-13 17:14 ` [PATCH v2 6/8] drm/msm/a6xx: add support for Adreno 660 GPU Jonathan Marek
2021-05-31 15:05   ` Akhil P Oommen
2021-06-08 16:53     ` Jonathan Marek
2021-05-13 17:14 ` [PATCH v2 7/8] drm/msm/a6xx: update a6xx_ucode_check_version for a660 Jonathan Marek
2021-05-31 15:06   ` Akhil P Oommen
2021-05-13 17:14 ` [PATCH v2 8/8] drm/msm/a6xx: add a660 hwcg table Jonathan Marek
2021-05-31 15:10   ` Akhil P Oommen

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