[PATCH 2/3] drm/omap: gem: Fix omap_gem_new() error path
Tomi Valkeinen
tomi.valkeinen at ti.com
Thu Mar 3 14:01:17 UTC 2016
From: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
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 at ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
---
drivers/gpu/drm/omapdrm/omap_gem.c | 34 ++++++++++++++++++----------------
1 file changed, 18 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c
index 9ac30560e9b1..cc36a8dc9bd4 100644
--- a/drivers/gpu/drm/omapdrm/omap_gem.c
+++ b/drivers/gpu/drm/omapdrm/omap_gem.c
@@ -1398,35 +1398,37 @@ 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);
-
- /* Allocate memory if needed. */
- if (flags & OMAP_BO_MEM_DMA_API) {
- omap_obj->vaddr = dma_alloc_writecombine(dev->dev, size,
- &omap_obj->paddr,
- GFP_KERNEL);
- if (!omap_obj->vaddr)
- goto fail;
- }
-
/* 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;
+ 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) {
+ omap_obj->vaddr = dma_alloc_writecombine(dev->dev, size,
+ &omap_obj->paddr,
+ GFP_KERNEL);
+ if (!omap_obj->vaddr)
+ goto err_release;
+ }
+
+ 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;
}
--
2.5.0
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