linux-kernel - [PATCH] usb: trancevibrator: simplify tv

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Message-Id: <20220720072346.33511-1-dzm91@hust.edu.cn>
Date:   Wed, 20 Jul 2022 15:23:43 +0800
From:   Dongliang Mu <dzm91@...t.edu.cn>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dongliang Mu <mudongliangabcd@...il.com>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] usb: trancevibrator: simplify tv_probe

From: Dongliang Mu <mudongliangabcd@...il.com>

The function tv_probe does not need to invoke kfree when the
allocation fails. So let's simplify the code of tv_probe.
Another change is to remove a redundant space.

Signed-off-by: Dongliang Mu <mudongliangabcd@...il.com>
---
 drivers/usb/misc/trancevibrator.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/misc/trancevibrator.c b/drivers/usb/misc/trancevibrator.c
index 26baba3ab7d7..30d4d774d448 100644
--- a/drivers/usb/misc/trancevibrator.c
+++ b/drivers/usb/misc/trancevibrator.c
@@ -84,29 +84,22 @@ static int tv_probe(struct usb_interface *interface,
 {
 	struct usb_device *udev = interface_to_usbdev(interface);
 	struct trancevibrator *dev;
-	int retval;
 
 	dev = kzalloc(sizeof(struct trancevibrator), GFP_KERNEL);
-	if (!dev) {
-		retval = -ENOMEM;
-		goto error;
-	}
+	if (!dev)
+		return -ENOMEM;
 
 	dev->udev = usb_get_dev(udev);
 	usb_set_intfdata(interface, dev);
 
 	return 0;
-
-error:
-	kfree(dev);
-	return retval;
 }
 
 static void tv_disconnect(struct usb_interface *interface)
 {
 	struct trancevibrator *dev;
 
-	dev = usb_get_intfdata (interface);
+	dev = usb_get_intfdata(interface);
 	usb_set_intfdata(interface, NULL);
 	usb_put_dev(dev->udev);
 	kfree(dev);
-- 
2.35.1