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 --- drivers/gpu/drm/msm/msm_drv.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 89634159ad75..41cc6cd690cd 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -51,6 +51,8 @@ #define MSM_VERSION_MINOR 10 #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, @@ -260,12 +262,7 @@ static int msm_drm_uninit(struct device *dev) 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);

@@ -403,6 +400,19 @@ static int msm_init_vram(struct drm_device *dev) 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); @@ -449,7 +459,7 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) /* 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);

@@ -547,6 +557,8 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv)

return ret;

+err_deinit_vram: + msm_deinit_vram(ddev); err_put_dev: drm_dev_put(ddev);