msm_iommu_new() can fail and this change makes sure that we
detect the failure and free the allocated domain before going
any further.
Signed-off-by: Stephane Viau <sv...@codeaurora.org>
---
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 1 +
drivers/gpu/drm/msm/msm_gpu.c | 8 ++++++++
2 files changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
index 14ac20a..e11028c6 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
@@ -590,6 +590,7 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev)
if (IS_ERR(mmu)) {
ret = PTR_ERR(mmu);
dev_err(dev->dev, "failed to init iommu: %d\n", ret);
+ iommu_domain_free(config->platform.iommu);
goto fail;
}
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 5d31b5a..aed9f37 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -651,6 +651,14 @@ int msm_gpu_init(struct drm_device *drm, struct
platform_device *pdev,
if (iommu) {
dev_info(drm->dev, "%s: using IOMMU\n", name);
gpu->mmu = msm_iommu_new(&pdev->dev, iommu);
+ if (IS_ERR(gpu->mmu)) {
+ ret = PTR_ERR(gpu->mmu);
+ dev_err(drm->dev, "failed to init iommu: %d\n", ret);
+ gpu->mmu = NULL;
+ iommu_domain_free(iommu);
+ goto fail;
+ }
+
} else {
dev_info(drm->dev, "%s: no IOMMU, fallback to VRAM
carveout!\n", name);
}
--
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a
Linux Foundation Collaborative Project
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