change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/drivers/gpu/drm/mediatek/mtk_drm_gem.c
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@@ -142,8 +142,6 @@
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 	ret = dma_mmap_attrs(priv->dma_dev, vma, mtk_gem->cookie,
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 			     mtk_gem->dma_addr, obj->size, mtk_gem->dma_attrs);
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-	if (ret)
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-		drm_gem_vm_close(vma);
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 	return ret;
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 }
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@@ -251,7 +249,11 @@
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 	mtk_gem->kvaddr = vmap(mtk_gem->pages, npages, VM_MAP,
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 			       pgprot_writecombine(PAGE_KERNEL));
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-
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+	if (!mtk_gem->kvaddr) {
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+		kfree(sgt);
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+		kfree(mtk_gem->pages);
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+		return NULL;
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+	}
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 out:
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 	kfree(sgt);
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@@ -266,6 +268,6 @@
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 		return;
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 	vunmap(vaddr);
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-	mtk_gem->kvaddr = 0;
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+	mtk_gem->kvaddr = NULL;
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 	kfree(mtk_gem->pages);
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 }