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2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/drivers/scsi/snic/snic_debugfs.c
..
..
@@ -30,33 +30,13 @@
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  * fnic directory and statistics directory for trace buffer and
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  * stats logging
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  */
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-
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-int
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-snic_debugfs_init(void)
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+void snic_debugfs_init(void)
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 {
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-	int rc = -1;
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-	struct dentry *de = NULL;
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+	snic_glob->trc_root = debugfs_create_dir("snic", NULL);
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-	de = debugfs_create_dir("snic", NULL);
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-	if (!de) {
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-		SNIC_DBG("Cannot create debugfs root\n");
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-
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-		return rc;
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-	}
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-	snic_glob->trc_root = de;
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-
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-	de = debugfs_create_dir("statistics", snic_glob->trc_root);
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-	if (!de) {
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-		SNIC_DBG("Cannot create Statistics directory\n");
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-
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-		return rc;
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-	}
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-	snic_glob->stats_root = de;
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-
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-	rc = 0;
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-
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-	return rc;
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-} /* end of snic_debugfs_init */
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+	snic_glob->stats_root = debugfs_create_dir("statistics",
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+						   snic_glob->trc_root);
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+}
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40
 
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 /*
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  * snic_debugfs_term - Tear down debugfs intrastructure
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@@ -391,56 +371,23 @@
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  * It will create file stats and reset_stats under statistics/host# directory
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  * to log per snic stats
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  */
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-int
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-snic_stats_debugfs_init(struct snic *snic)
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+void snic_stats_debugfs_init(struct snic *snic)
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 {
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-	int rc = -1;
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 	char name[16];
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-	struct dentry *de = NULL;
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 	snprintf(name, sizeof(name), "host%d", snic->shost->host_no);
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-	if (!snic_glob->stats_root) {
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-		SNIC_DBG("snic_stats root doesn't exist\n");
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-		return rc;
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-	}
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+	snic->stats_host = debugfs_create_dir(name, snic_glob->stats_root);
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-	de = debugfs_create_dir(name, snic_glob->stats_root);
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-	if (!de) {
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-		SNIC_DBG("Cannot create host directory\n");
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+	snic->stats_file = debugfs_create_file("stats", S_IFREG|S_IRUGO,
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+					       snic->stats_host, snic,
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+					       &snic_stats_fops);
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385
 
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-		return rc;
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-	}
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-	snic->stats_host = de;
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-
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-	de = debugfs_create_file("stats",
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-				S_IFREG|S_IRUGO,
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-				snic->stats_host,
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-				snic,
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-				&snic_stats_fops);
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-	if (!de) {
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-		SNIC_DBG("Cannot create host's stats file\n");
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-
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-		return rc;
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-	}
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-	snic->stats_file = de;
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-
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-	de = debugfs_create_file("reset_stats",
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-				S_IFREG|S_IRUGO|S_IWUSR,
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-				snic->stats_host,
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-				snic,
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-				&snic_reset_stats_fops);
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-
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-	if (!de) {
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-		SNIC_DBG("Cannot create host's reset_stats file\n");
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-
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-		return rc;
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-	}
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-	snic->reset_stats_file = de;
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-	rc = 0;
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-
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-	return rc;
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-} /* end of snic_stats_debugfs_init */
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+	snic->reset_stats_file = debugfs_create_file("reset_stats",
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+						     S_IFREG|S_IRUGO|S_IWUSR,
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+						     snic->stats_host, snic,
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+						     &snic_reset_stats_fops);
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+}
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 /*
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  * snic_stats_debugfs_remove - Tear down debugfs infrastructure of stats
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@@ -492,71 +439,31 @@
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 	return 0;
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 }
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-static const struct seq_operations snic_trc_seq_ops = {
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+static const struct seq_operations snic_trc_sops = {
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 	.start	= snic_trc_seq_start,
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 	.next	= snic_trc_seq_next,
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 	.stop	= snic_trc_seq_stop,
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 	.show	= snic_trc_seq_show,
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 };
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-static int
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-snic_trc_open(struct inode *inode, struct file *filp)
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-{
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-	return seq_open(filp, &snic_trc_seq_ops);
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-}
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-
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-static const struct file_operations snic_trc_fops = {
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-	.owner	= THIS_MODULE,
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-	.open	= snic_trc_open,
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-	.read	= seq_read,
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-	.llseek = seq_lseek,
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-	.release = seq_release,
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-};
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+DEFINE_SEQ_ATTRIBUTE(snic_trc);
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450
 
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 /*
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  * snic_trc_debugfs_init : creates trace/tracing_enable files for trace
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  * under debugfs
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  */
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-int
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-snic_trc_debugfs_init(void)
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+void snic_trc_debugfs_init(void)
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 {
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-	struct dentry *de = NULL;
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-	int ret = -1;
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+	snic_glob->trc.trc_enable = debugfs_create_bool("tracing_enable",
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+							S_IFREG | S_IRUGO | S_IWUSR,
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+							snic_glob->trc_root,
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+							&snic_glob->trc.enable);
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461
 
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-	if (!snic_glob->trc_root) {
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-		SNIC_ERR("Debugfs root directory for snic doesn't exist.\n");
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-
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-		return ret;
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-	}
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-
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-	de = debugfs_create_bool("tracing_enable",
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-				 S_IFREG | S_IRUGO | S_IWUSR,
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-				 snic_glob->trc_root,
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-				 &snic_glob->trc.enable);
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-
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-	if (!de) {
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-		SNIC_ERR("Can't create trace_enable file.\n");
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-
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-		return ret;
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-	}
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-	snic_glob->trc.trc_enable = de;
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-
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-	de = debugfs_create_file("trace",
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-				 S_IFREG | S_IRUGO | S_IWUSR,
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-				 snic_glob->trc_root,
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-				 NULL,
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-				 &snic_trc_fops);
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-
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-	if (!de) {
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-		SNIC_ERR("Cannot create trace file.\n");
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-
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-		return ret;
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-	}
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-	snic_glob->trc.trc_file = de;
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-	ret = 0;
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-
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-	return ret;
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-} /* end of snic_trc_debugfs_init */
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+	snic_glob->trc.trc_file = debugfs_create_file("trace",
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+						      S_IFREG | S_IRUGO | S_IWUSR,
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+						      snic_glob->trc_root, NULL,
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+						      &snic_trc_fops);
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+}
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 /*
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  * snic_trc_debugfs_term : cleans up the files created for trace under debugfs