6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sui Jingfeng <sui.jingfeng@xxxxxxxxx>
[ Upstream commit b34a7401ffaee45354e81b38a4d072794079cfd6 ]
Because the of_dma_configure() will returns '-EPROBE_DEFER' if the probe
procedure of the specific platform IOMMU driver is not finished yet. It
can also return other error code for various reasons.
Stop pretending that it will always suceess, quit if it fail.
Signed-off-by: Sui Jingfeng <sui.jingfeng@xxxxxxxxx>
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
Fixes: 29ac8979cdf7 ("drm/msm/a6xx: use msm_gem for GMU memory objects")
Fixes: 5a903a44a984 ("drm/msm/a6xx: Introduce GMU wrapper support")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Patchwork: https://patchwork.freedesktop.org/patch/622782/
Link: https://lore.kernel.org/r/20241104090738.529848-1-sui.jingfeng@xxxxxxxxx
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
index c9edaa6d76369..9009442b543dd 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c
@@ -1510,7 +1510,9 @@ int a6xx_gmu_wrapper_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node)
gmu->dev = &pdev->dev;
- of_dma_configure(gmu->dev, node, true);
+ ret = of_dma_configure(gmu->dev, node, true);
+ if (ret)
+ return ret;
pm_runtime_enable(gmu->dev);
@@ -1574,7 +1576,9 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node)
gmu->dev = &pdev->dev;
- of_dma_configure(gmu->dev, node, true);
+ ret = of_dma_configure(gmu->dev, node, true);
+ if (ret)
+ return ret;
/* Fow now, don't do anything fancy until we get our feet under us */
gmu->idle_level = GMU_IDLE_STATE_ACTIVE;
--
2.39.5
