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 58110315D3E; Thu, 5 Mar 2026 11:07:37 +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=1772708857; cv=none; b=qrsQI0lgYqZtMIkgkxQzi2vtZBpVsvHIvciLzSOQ4tXUuvVnR0Xks/Lvpw4PI8l8NJm4cfAsaK3607ZPU7EkIW/9iRd2SpW8bFx4hFhYZmWyslxVST4j8hkCWxSTwQ26r0GpnckUn6OZLJ8ip0hH1K0c73Sr879UMSIY6ackF/0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772708857; c=relaxed/simple; bh=I5RTqGWF/smyis5LMKbxrhcgEnu87Neuhp9zkbzeYso=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=cPmIpQ3HCR4i2XXnYSbobrBvGDrzVx9yW1mlP93FtIKfgjtrbAV4VTPIclElPMNy6elXpNoTAHikt+37DtGTF5FaJfTH7PavSX9+XUMJX9LAvcFBoHZjGJkIZpkPRg70eCqxOaLaQmgDkN/VGUUeXnQKkwYCmCfuyOk0FAC671Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=m0izhF7N; 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="m0izhF7N" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 06B2DC2BCAF; Thu, 5 Mar 2026 11:07:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772708857; bh=I5RTqGWF/smyis5LMKbxrhcgEnu87Neuhp9zkbzeYso=; h=From:To:Cc:Subject:Date:From; b=m0izhF7NZIUTHemtibMTa/cTfPgcBtL4GDtsE9+iy1DrEcfyt1ENp41nxXCBo6knY NK2HHympxmTODd2M1Ey1FtVATSDjVnkD40irn/uwDcjgKTm73niSY/Sh8r3XYz9J/m qpmWDkVYS8pPskm8yleukOmMcSKhqDpP0bZAgYAcIY8LH6kCDLJGElqM/26G/Fwd7U qcDZUdH+zg9U4oqaiOdzsrEC6Ca+sUkPeOnRoT1aO2yUXhIoyn+/NwZUFlZZnxstDT jWGODikHErVsSEqA9q6tO3mubh51Qd00wi/8lbpEQavSmJjFgc8p4CbF6Yhghlr2C2 yohFTCLebN/Mw== Received: from johan by xi.lan with local (Exim 4.98.2) (envelope-from ) id 1vy6YI-000000004cl-2KZE; Thu, 05 Mar 2026 12:07:34 +0100 From: Johan Hovold To: linux-wireless@vger.kernel.org Cc: Brian Norris , Francesco Dolcini , Felix Fietkau , Lorenzo Bianconi , Ryder Lee , Shayne Chen , Sean Wang , Jakub Kicinski , Stanislaw Gruszka , Hin-Tak Leung , Jes Sorensen , Ping-Ke Shih , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Matthias Brugger , AngeloGioacchino Del Regno , libertas-dev@lists.infradead.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 00/13] wifi: drop redundant USB device references Date: Thu, 5 Mar 2026 12:07:00 +0100 Message-ID: <20260305110713.17725-1-johan@kernel.org> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-wireless@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 redundant device references 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 them. Note that I sent an ath9k patch separately here: https://lore.kernel.org/all/20260305105803.17011-1-johan@kernel.org/ but I guess these can all be picked up by Johannes. Johan Johan Hovold (13): wifi: at76c50x: drop redundant device reference wifi: libertas: drop redundant device reference wifi: libertas_tf: drop redundant device reference wifi: mwifiex: drop redundant device reference wifi: mt76: drop redundant device reference wifi: mt76x0u: drop redundant device reference wifi: mt76x2u: drop redundant device reference wifi: mt76: mt792xu: drop redundant device reference wifi: mt7601u: drop redundant device reference wifi: rt2x00: drop redundant device reference wifi: rtl818x: drop redundant device reference wifi: rtl8xxxu: drop redundant device reference wifi: rtlwifi: usb: drop redundant device reference drivers/net/wireless/atmel/at76c50x-usb.c | 12 ++++-------- drivers/net/wireless/marvell/libertas/if_usb.c | 3 --- drivers/net/wireless/marvell/libertas_tf/if_usb.c | 2 -- drivers/net/wireless/marvell/mwifiex/usb.c | 4 ---- drivers/net/wireless/mediatek/mt76/mt7615/usb.c | 3 --- drivers/net/wireless/mediatek/mt76/mt76x0/usb.c | 3 --- drivers/net/wireless/mediatek/mt76/mt76x2/usb.c | 4 ---- drivers/net/wireless/mediatek/mt76/mt7921/usb.c | 2 -- drivers/net/wireless/mediatek/mt76/mt7925/usb.c | 2 -- drivers/net/wireless/mediatek/mt76/mt792x_usb.c | 1 - drivers/net/wireless/mediatek/mt7601u/usb.c | 3 --- drivers/net/wireless/ralink/rt2x00/rt2x00usb.c | 12 +----------- drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c | 4 ---- drivers/net/wireless/realtek/rtl8xxxu/core.c | 11 +++-------- drivers/net/wireless/realtek/rtlwifi/usb.c | 4 ---- 15 files changed, 8 insertions(+), 62 deletions(-) -- 2.52.0