linux-kernel - [PATCH] thunderbolt: Use common error handling code in update_property

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Message-ID: <26b7f215-4f83-413c-9dab-737d790053c0@web.de>
Date: Wed, 25 Sep 2024 10:10:38 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: linux-usb@...r.kernel.org, Andreas Noever <andreas.noever@...il.com>,
 Michael Jamet <michael.jamet@...el.com>,
 Mika Westerberg <mika.westerberg@...ux.intel.com>,
 Yehezkel Bernat <YehezkelShB@...il.com>
Cc: LKML <linux-kernel@...r.kernel.org>, kernel-janitors@...r.kernel.org
Subject: [PATCH] thunderbolt: Use common error handling code in
 update_property_block()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 25 Sep 2024 09:39:16 +0200

Add a jump target so that a bit of exception handling can be better reused
at the end of this function implementation.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/thunderbolt/xdomain.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/thunderbolt/xdomain.c b/drivers/thunderbolt/xdomain.c
index 11a50c86a1e4..8e3cf95ca99c 100644
--- a/drivers/thunderbolt/xdomain.c
+++ b/drivers/thunderbolt/xdomain.c
@@ -670,23 +670,19 @@ static void update_property_block(struct tb_xdomain *xd)
 		ret = tb_property_format_dir(dir, NULL, 0);
 		if (ret < 0) {
 			dev_warn(&xd->dev, "local property block creation failed\n");
-			tb_property_free_dir(dir);
-			goto out_unlock;
+			goto out_free_dir;
 		}

 		block_len = ret;
 		block = kcalloc(block_len, sizeof(*block), GFP_KERNEL);
-		if (!block) {
-			tb_property_free_dir(dir);
-			goto out_unlock;
-		}
+		if (!block)
+			goto out_free_dir;

 		ret = tb_property_format_dir(dir, block, block_len);
 		if (ret) {
 			dev_warn(&xd->dev, "property block generation failed\n");
-			tb_property_free_dir(dir);
 			kfree(block);
-			goto out_unlock;
+			goto out_free_dir;
 		}

 		tb_property_free_dir(dir);
@@ -701,6 +697,11 @@ static void update_property_block(struct tb_xdomain *xd)
 out_unlock:
 	mutex_unlock(&xd->lock);
 	mutex_unlock(&xdomain_lock);
+	return;
+
+out_free_dir:
+	tb_property_free_dir(dir);
+	goto out_unlock;
 }

 static void start_handshake(struct tb_xdomain *xd)
--
2.46.1