From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 233182C029D; Thu, 30 Apr 2026 08:33:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777538034; cv=none; b=tat913byvOBc9lYrz5f5YUy+qFMM0nPoBNUe/pNFvitnIQEcEqoxU0D37LC1BkRwOkZ1K+eWI7nKXouTyQhfvlMjXnGyRUycSTIQgNzMTcUJ4PrFW+Rf9V/3P1V96bCXnVgOFAVU43dbRaXdTtUVeX6zE3G8y2y3/AanktGwrSY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777538034; c=relaxed/simple; bh=vxD9xO6E6gxI2jN1+uuURcxBVAKWmSKLybdcQnknBu0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Hh/QrOopC//r6wz+7CXaXowiCyCvAwRx4iSaLQTTLHGKXzKdUhLO/oQUB3dZ7SxejufYjo0ROsURZddAqGdBk8iy4ab675AxjMgtYofV45QjlhklCs7+W+PFeeFc91rq1fY7AxBPRKMYwKlujthS4CisuxabMEHqQSLFmVV9jLs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Udrd04/G; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Udrd04/G" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CE90FC2BCC6; Thu, 30 Apr 2026 08:33:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777538033; bh=vxD9xO6E6gxI2jN1+uuURcxBVAKWmSKLybdcQnknBu0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Udrd04/GFekpcWkAbRf/DTZeYGDjPZ10LeYx0lyl78iRMOLH2LjsubMJ2JZv+gfBo jpd3fDuzxLGgZSJIEo68r4DVjkRPbrVhTQLfmYv3cN3s11ZgrbFGC/gg8rKaoZQyXc hBDlXSWV9ZR830TT0mtp1blKFrvymmUEFBFMcTQyuwyfrwP/inHW4V+fsMimDFv96T e/W+WUh7aCP5QMmM73UtB5Hm21Dl5XK0hhhkVTt87hpJIR4GO3B2X7s7RQx8Ui1w/B HSKILqEZ+gZPcJ+y/agypuJ1MceBh2iKgdXiMCWHH2jjTz9nNyZvPGYpzA+XFXI7i2 6wBLY21Lo87NQ== Received: from johan by xi.lan with local (Exim 4.98.2) (envelope-from ) id 1wIMqF-00000000u0I-1vYF; Thu, 30 Apr 2026 10:33:51 +0200 From: Johan Hovold To: Felix Fietkau , Lorenzo Bianconi , Ryder Lee , Jakub Kicinski Cc: Shayne Chen , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , linux-wireless@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH v2 RESEND 5/5] wifi: mt7601u: drop redundant device reference Date: Thu, 30 Apr 2026 10:33:35 +0200 Message-ID: <20260430083335.215239-6-johan@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260430083335.215239-1-johan@kernel.org> References: <20260430083335.215239-1-johan@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Driver core holds a reference to the USB interface and its parent USB device while the interface is bound to a driver and there is no need to take additional references unless the structures are needed after disconnect. Drop the redundant device reference to reduce cargo culting, make it easier to spot drivers where an extra reference is needed, and reduce the risk of memory leaks when drivers fail to release it. Signed-off-by: Johan Hovold --- drivers/net/wireless/mediatek/mt7601u/usb.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt7601u/usb.c b/drivers/net/wireless/mediatek/mt7601u/usb.c index c41ae251cb95..9306870cbc91 100644 --- a/drivers/net/wireless/mediatek/mt7601u/usb.c +++ b/drivers/net/wireless/mediatek/mt7601u/usb.c @@ -274,7 +274,6 @@ static int mt7601u_probe(struct usb_interface *usb_intf, if (!dev) return -ENOMEM; - usb_dev = usb_get_dev(usb_dev); usb_reset_device(usb_dev); usb_set_intfdata(usb_intf, dev); @@ -319,7 +318,6 @@ static int mt7601u_probe(struct usb_interface *usb_intf, mt7601u_cleanup(dev); err: usb_set_intfdata(usb_intf, NULL); - usb_put_dev(interface_to_usbdev(usb_intf)); destroy_workqueue(dev->stat_wq); ieee80211_free_hw(dev->hw); @@ -334,7 +332,6 @@ static void mt7601u_disconnect(struct usb_interface *usb_intf) mt7601u_cleanup(dev); usb_set_intfdata(usb_intf, NULL); - usb_put_dev(interface_to_usbdev(usb_intf)); destroy_workqueue(dev->stat_wq); ieee80211_free_hw(dev->hw); -- 2.53.0