add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/sh/mm/consistent.c
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@@ -43,8 +43,7 @@
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 	r = pdev->resource + pdev->num_resources - 1;
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 	if (r->flags) {
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-		pr_warning("%s: unable to find empty space for resource\n",
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-			name);
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+		pr_warn("%s: unable to find empty space for resource\n", name);
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 		return -EINVAL;
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 	}
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..
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@@ -54,11 +53,9 @@
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 	buf = dma_alloc_coherent(&pdev->dev, memsize, &dma_handle, GFP_KERNEL);
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 	if (!buf) {
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-		pr_warning("%s: unable to allocate memory\n", name);
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+		pr_warn("%s: unable to allocate memory\n", name);
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 		return -ENOMEM;
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 	}
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-
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-	memset(buf, 0, memsize);
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 	r->flags = IORESOURCE_MEM;
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 	r->start = dma_handle;