add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/pci/pci-sysfs.c
..
..
@@ -1141,11 +1141,9 @@
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1141
 
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 	sysfs_bin_attr_init(res_attr);
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 	if (write_combine) {
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-		pdev->res_attr_wc[num] = res_attr;
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 		sprintf(res_attr_name, "resource%d_wc", num);
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 		res_attr->mmap = pci_mmap_resource_wc;
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 	} else {
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-		pdev->res_attr[num] = res_attr;
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 		sprintf(res_attr_name, "resource%d", num);
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 		if (pci_resource_flags(pdev, num) & IORESOURCE_IO) {
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 			res_attr->read = pci_read_resource_io;
..
..
@@ -1161,10 +1159,17 @@
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 	res_attr->size = pci_resource_len(pdev, num);
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 	res_attr->private = (void *)(unsigned long)num;
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 	retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
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-	if (retval)
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+	if (retval) {
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 		kfree(res_attr);
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+		return retval;
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+	}
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-	return retval;
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+	if (write_combine)
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+		pdev->res_attr_wc[num] = res_attr;
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+	else
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+		pdev->res_attr[num] = res_attr;
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+
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+	return 0;
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 }
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1174
 
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 /**