From: Stephane Viau <sviau@codeaurora.org> To: dri-devel@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 03/10] drm/msm: Fix IOMMU clean up path in case msm_iommu_new() fails Date: Tue, 15 Sep 2015 08:41:46 -0400 [thread overview] Message-ID: <1442320913-3248-4-git-send-email-sviau@codeaurora.org> (raw) In-Reply-To: <1442320913-3248-1-git-send-email-sviau@codeaurora.org> 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 <sviau@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 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel
WARNING: multiple messages have this Message-ID (diff)
From: Stephane Viau <sviau@codeaurora.org> To: dri-devel@lists.freedesktop.org Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, robdclark@gmail.com, Stephane Viau <sviau@codeaurora.org> Subject: [PATCH 03/10] drm/msm: Fix IOMMU clean up path in case msm_iommu_new() fails Date: Tue, 15 Sep 2015 08:41:46 -0400 [thread overview] Message-ID: <1442320913-3248-4-git-send-email-sviau@codeaurora.org> (raw) In-Reply-To: <1442320913-3248-1-git-send-email-sviau@codeaurora.org> 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 <sviau@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
next prev parent reply other threads:[~2015-09-15 12:41 UTC|newest] Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-09-15 12:41 [PATCH 00/10] drm/msm: Add support for MSM8996 Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 01/10] drm/msm/mdp5: remove the cfg pointer from SMP struct Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 02/10] drm/msm/mdp5: Disable hardware translation table walks (MSM8996) Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` Stephane Viau [this message] 2015-09-15 12:41 ` [PATCH 03/10] drm/msm: Fix IOMMU clean up path in case msm_iommu_new() fails Stephane Viau 2015-09-15 12:41 ` [PATCH 04/10] drm/msm/mdp5: Avoid printing error messages for optional clocks Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 05/10] drm/msm/mdp5: Vote for SMMU power when performing translations Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 06/10] drm/msm/hdmi: Add basic HDMI support for msm8996 Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 07/10] drm/msm/mdp: Update generated headers (Pixel Extension) Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:45 ` [PATCH] rnndb: Add Pixel Extension registers Stephane Viau 2015-09-15 12:45 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 08/10] drm/msm/mdp5: Use the newly introduced enum mdp_component_type Stephane Viau 2015-09-15 12:41 ` [PATCH 09/10] drm/msm/mdp: Add Software Pixel Extension support Stephane Viau 2015-09-15 12:41 ` Stephane Viau 2015-09-15 12:41 ` [PATCH 10/10] drm/msm/mdp5: Basic support for MDP5 v1.7 (MSM8996) Stephane Viau 2015-09-15 12:41 ` Stephane Viau
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