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 2/5] drm/msm/a6xx: avoid shadow NULL reference in failure path
Date: Wed, 12 May 2021 20:37:46 -0400 [thread overview]
Message-ID: <20210513003811.29578-3-jonathan@marek.ca> (raw)
In-Reply-To: <20210513003811.29578-1-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 727d111a413f..01bd31b3c504 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1211,7 +1211,7 @@ 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
next prev parent reply other threads:[~2021-05-13 0:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-13 0:37 [PATCH 0/5] drm/msm/a6xx: add support for Adreno 660 GPU Jonathan Marek
2021-05-13 0:37 ` [PATCH 1/5] drm/msm: remove unused icc_path/ocmem_icc_path Jonathan Marek
2021-05-13 0:37 ` Jonathan Marek [this message]
2021-05-13 0:37 ` [PATCH 3/5] drm/msm/a6xx: add support for Adreno 660 GPU Jonathan Marek
2021-05-13 0:37 ` [PATCH 4/5] drm/msm/a6xx: update a6xx_ucode_check_version for a660 Jonathan Marek
2021-05-13 0:37 ` [PATCH 5/5] drm/msm/a6xx: add a660 hwcg table Jonathan Marek
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