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drm/omap: gem: Fix omap_gem_new() error path 

When an error occurs in omap_gem_new() the function calls
omap_gem_free_object() to clean up. However, that function expects to be
called on a fully initialized GEM object and thus crashes.

Replace it by manual cleanup.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Laurent Pinchart 2016-03-02 12:51:19 +02:00 committed by Tomi Valkeinen
parent 39cd66209d
commit c2eb77ff71
1 changed files with 19 additions and 17 deletions
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36
drivers/gpu/drm/omapdrm/omap_gem.c
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@ -1398,9 +1398,17 @@ struct drm_gem_object *omap_gem_new(struct drm_device *dev,
size = PAGE_ALIGN(gsize.bytes);
}
spin_lock(&priv->list_lock);
list_add(&omap_obj->mm_list, &priv->obj_list);
spin_unlock(&priv->list_lock);
/* Initialize the GEM object. */
if (!(flags & OMAP_BO_MEM_SHMEM)) {
drm_gem_private_object_init(dev, obj, size);
} else {
ret = drm_gem_object_init(dev, obj, size);
if (ret)
goto err_free;
mapping = file_inode(obj->filp)->i_mapping;
mapping_set_gfp_mask(mapping, GFP_USER | __GFP_DMA32);
}
/* Allocate memory if needed. */
if (flags & OMAP_BO_MEM_DMA_API) {
@ -1408,25 +1416,19 @@ struct drm_gem_object *omap_gem_new(struct drm_device *dev,
&omap_obj->paddr,
GFP_KERNEL);
if (!omap_obj->vaddr)
goto fail;
goto err_release;
}
/* Initialize the GEM object. */
if (!(flags & OMAP_BO_MEM_SHMEM)) {
drm_gem_private_object_init(dev, obj, size);
} else {
ret = drm_gem_object_init(dev, obj, size);
if (ret)
goto fail;
mapping = file_inode(obj->filp)->i_mapping;
mapping_set_gfp_mask(mapping, GFP_USER | __GFP_DMA32);
}
spin_lock(&priv->list_lock);
list_add(&omap_obj->mm_list, &priv->obj_list);
spin_unlock(&priv->list_lock);
return obj;
fail:
omap_gem_free_object(obj);
err_release:
drm_gem_object_release(obj);
err_free:
kfree(omap_obj);
return NULL;
}