From: Johan Hovold johan+linaro@kernel.org
commit 60d476af96015891c7959f30838ae7a9749932bf upstream.
Make sure to release the VRAM buffer also in a case a subcomponent fails to bind.
Fixes: d863f0c7b536 ("drm/msm: Call msm_init_vram before binding the gpu") Cc: stable@vger.kernel.org # 5.11 Cc: Craig Tatlor ctatlor97@gmail.com Signed-off-by: Johan Hovold johan+linaro@kernel.org Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Patchwork: https://patchwork.freedesktop.org/patch/525094/ Link: https://lore.kernel.org/r/20230306100722.28485-7-johan+linaro@kernel.org Signed-off-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/msm/msm_drv.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-)
--- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -50,6 +50,8 @@ #define MSM_VERSION_MINOR 9 #define MSM_VERSION_PATCHLEVEL 0
+static void msm_deinit_vram(struct drm_device *ddev); + static const struct drm_mode_config_funcs mode_config_funcs = { .fb_create = msm_framebuffer_create, .output_poll_changed = drm_fb_helper_output_poll_changed, @@ -259,12 +261,7 @@ static int msm_drm_uninit(struct device if (kms && kms->funcs) kms->funcs->destroy(kms);
- if (priv->vram.paddr) { - unsigned long attrs = DMA_ATTR_NO_KERNEL_MAPPING; - drm_mm_takedown(&priv->vram.mm); - dma_free_attrs(dev, priv->vram.size, NULL, - priv->vram.paddr, attrs); - } + msm_deinit_vram(ddev);
component_unbind_all(dev, ddev);
@@ -404,6 +401,19 @@ static int msm_init_vram(struct drm_devi return ret; }
+static void msm_deinit_vram(struct drm_device *ddev) +{ + struct msm_drm_private *priv = ddev->dev_private; + unsigned long attrs = DMA_ATTR_NO_KERNEL_MAPPING; + + if (!priv->vram.paddr) + return; + + drm_mm_takedown(&priv->vram.mm); + dma_free_attrs(ddev->dev, priv->vram.size, NULL, priv->vram.paddr, + attrs); +} + static int msm_drm_init(struct device *dev, const struct drm_driver *drv) { struct msm_drm_private *priv = dev_get_drvdata(dev); @@ -451,7 +461,7 @@ static int msm_drm_init(struct device *d /* Bind all our sub-components: */ ret = component_bind_all(dev, ddev); if (ret) - goto err_put_dev; + goto err_deinit_vram;
dma_set_max_seg_size(dev, UINT_MAX);
@@ -549,6 +559,8 @@ err_msm_uninit:
return ret;
+err_deinit_vram: + msm_deinit_vram(ddev); err_put_dev: drm_dev_put(ddev);