RAS/CEC: Convert to DEFINE_SHOW_ATTRIBUTE()

Use the DEFINE_SHOW_ATTRIBUTE() macro and simplify the code.
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200919012252.171437-1-miaoqinglang@huawei.com

drivers/ras/cec.c

@@ -435,7 +435,7 @@ DEFINE_DEBUGFS_ATTRIBUTE(action_threshold_ops, u64_get, action_threshold_set, "%
 
 static const char * const bins[] = { "00", "01", "10", "11" };
 
-static int array_dump(struct seq_file *m, void *v)
+static int array_show(struct seq_file *m, void *v)
 {
 	struct ce_array *ca = &ce_arr;
 	int i;
@@ -467,18 +467,7 @@ static int array_dump(struct seq_file *m, void *v)
 	return 0;
 }
 
-static int array_open(struct inode *inode, struct file *filp)
-{
-	return single_open(filp, array_dump, NULL);
-}
-
-static const struct file_operations array_ops = {
-	.owner	 = THIS_MODULE,
-	.open	 = array_open,
-	.read	 = seq_read,
-	.llseek	 = seq_lseek,
-	.release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(array);
 
 static int __init create_debugfs_nodes(void)
 {
@@ -513,7 +502,7 @@ static int __init create_debugfs_nodes(void)
 		goto err;
 	}
 
-	array = debugfs_create_file("array", S_IRUSR, d, NULL, &array_ops);
+	array = debugfs_create_file("array", S_IRUSR, d, NULL, &array_fops);
 	if (!array) {
 		pr_warn("Error creating array debugfs node!\n");
 		goto err;