linux-kernel - [PATCH v2 9/9] can: etas_es58x and peak_usb: remove useless call to usb_set

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Message-Id: <20221210090157.793547-10-mailhol.vincent@wanadoo.fr>
Date:   Sat, 10 Dec 2022 18:01:57 +0900
From:   Vincent Mailhol <mailhol.vincent@...adoo.fr>
To:     Marc Kleine-Budde <mkl@...gutronix.de>, linux-can@...r.kernel.org
Cc:     Oliver Neukum <oneukum@...e.com>,
        Wolfgang Grandegger <wg@...ndegger.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Frank Jungclaus <frank.jungclaus@....eu>, socketcan@....eu,
        Yasushi SHOJI <yashi@...cecubics.com>,
        Stefan Mätje <stefan.maetje@....eu>,
        Hangyu Hua <hbh25y@...il.com>,
        Oliver Hartkopp <socketcan@...tkopp.net>,
        Peter Fink <pfink@...ist-es.de>,
        Jeroen Hofstee <jhofstee@...tronenergy.com>,
        Christoph Möhring <cmoehring@...ist-es.de>,
        John Whittington <git@...engineering.co.uk>,
        Vasanth Sadhasivan <vasanth.sadhasivan@...sara.com>,
        Jimmy Assarsson <extja@...ser.com>,
        Anssi Hannula <anssi.hannula@...wise.fi>,
        Pavel Skripkin <paskripkin@...il.com>,
        Stephane Grosjean <s.grosjean@...k-system.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        "Gustavo A . R . Silva" <gustavoars@...nel.org>,
        Julia Lawall <Julia.Lawall@...ia.fr>,
        Dongliang Mu <dzm91@...t.edu.cn>,
        Sebastian Haas <haas@...-wuensche.com>,
        Maximilian Schneider <max@...neidersoft.net>,
        Daniel Berglund <db@...ser.com>,
        Olivier Sobrie <olivier@...rie.be>,
        Remigiusz Kołłątaj 
        <remigiusz.kollataj@...ica.com>,
        Jakob Unterwurzacher <jakob.unterwurzacher@...obroma-systems.com>,
        Martin Elshuber <martin.elshuber@...obroma-systems.com>,
        Bernd Krumboeck <b.krumboeck@...il.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Alan Stern <stern@...land.harvard.edu>,
        linux-usb@...r.kernel.org,
        Vincent Mailhol <mailhol.vincent@...adoo.fr>
Subject: [PATCH v2 9/9] can: etas_es58x and peak_usb: remove useless call to usb_set_intfdata()

The core sets the usb_interface to NULL in [1]. Also setting it to
NULL in usb_driver::disconnect() is useless.

Remove the call to usb_set_intfdata(intf, NULL) in the disconnect
function of all drivers under drivers/net/can/usb.

[1] function usb_unbind_interface() from drivers/usb/core/driver.c
Link: https://elixir.bootlin.com/linux/v6.0/source/drivers/usb/core/driver.c#L497

Signed-off-by: Vincent Mailhol <mailhol.vincent@...adoo.fr>
---
 drivers/net/can/usb/etas_es58x/es58x_core.c  | 1 -
 drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 --
 2 files changed, 3 deletions(-)

diff --git a/drivers/net/can/usb/etas_es58x/es58x_core.c b/drivers/net/can/usb/etas_es58x/es58x_core.c
index 0c7f7505632c..4924f0be3510 100644
--- a/drivers/net/can/usb/etas_es58x/es58x_core.c
+++ b/drivers/net/can/usb/etas_es58x/es58x_core.c
@@ -2257,7 +2257,6 @@ static void es58x_disconnect(struct usb_interface *intf)
 	es58x_free_netdevs(es58x_dev);
 	es58x_free_urbs(es58x_dev);
 	devlink_free(priv_to_devlink(es58x_dev));
-	usb_set_intfdata(intf, NULL);
 }
 
 static struct usb_driver es58x_driver = {
diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
index 1d996d3320fe..c15200aebfb6 100644
--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
@@ -974,8 +974,6 @@ static void peak_usb_disconnect(struct usb_interface *intf)
 		free_candev(netdev);
 		dev_info(&intf->dev, "%s removed\n", name);
 	}
-
-	usb_set_intfdata(intf, NULL);
 }
 
 /*
-- 
2.37.4