From nobody Fri Dec 19 10:48:36 2025 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (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 7942D2C08C4 for ; Wed, 8 Oct 2025 19:08:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759950493; cv=none; b=dagBYM4g40BTZ3keZZIWg3GiTUJmE1evVqleoflaeHWXmv5ZqmnQk89sitlc4It8eA3oJzhXPomEpJ0lXgygpPFvJ+sj1u+nquP8dnF7lsJhyA5oKiLrwpo+5wOXDrQSg/lxOwlmTUM6m20laksYxVyOJAtSTtyLeyC9WOddBQ0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759950493; c=relaxed/simple; bh=vP4s1Ig2LIoMVqDjv/SxxsVEZ/CtWQv643jJiKhNioU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=FohEhWWTrwIkZcnRKOMJXs1+DzYnDdmart8XN93yCByshLVCXag052W4NYROzqRXxDuLIp/O6/FA37ImJI30iU43hMdv0sIgf82Aal25FtU10uf9/B9l46LPncq53YAWTTUNHSm+l4Q2HJiZyp5uHtWEeXwhBfV0nDE26HI5Gys= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1v6ZW4-0003RM-3P; Wed, 08 Oct 2025 21:08:00 +0200 Received: from moin.white.stw.pengutronix.de ([2a0a:edc0:0:b01:1d::7b] helo=bjornoya.blackshift.org) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1v6ZW3-002cDD-0P; Wed, 08 Oct 2025 21:07:59 +0200 Received: from hardanger.blackshift.org (p54b152ce.dip0.t-ipconnect.de [84.177.82.206]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: mkl-all@blackshift.org) by smtp.blackshift.org (Postfix) with ESMTPSA id C06BB4821F5; Wed, 08 Oct 2025 19:07:58 +0000 (UTC) From: Marc Kleine-Budde Date: Wed, 08 Oct 2025 21:07:36 +0200 Subject: [PATCH 1/7] can: m_can: m_can_init_ram(): make static Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251008-m_can-cleanups-v1-1-1784a18eaa84@pengutronix.de> References: <20251008-m_can-cleanups-v1-0-1784a18eaa84@pengutronix.de> In-Reply-To: <20251008-m_can-cleanups-v1-0-1784a18eaa84@pengutronix.de> To: Chandrasekar Ramakrishnan , Vincent Mailhol , Markus Schneider-Pargmann Cc: linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, Marc Kleine-Budde X-Mailer: b4 0.15-dev-92513 X-Developer-Signature: v=1; a=openpgp-sha256; l=2773; i=mkl@pengutronix.de; h=from:subject:message-id; bh=vP4s1Ig2LIoMVqDjv/SxxsVEZ/CtWQv643jJiKhNioU=; b=owEBbQGS/pANAwAKAQx0Zd/5kJGcAcsmYgBo5raBb5T2wvfQ1oCBqI0RfW+fUyS8pY6lV7ltb fRAAHfW4yqJATMEAAEKAB0WIQSf+wzYr2eoX/wVbPMMdGXf+ZCRnAUCaOa2gQAKCRAMdGXf+ZCR nB79B/4rLZrI/61hb2gupzZRRmrliKS6LhPg5KEwq2qDewIb5ZM6JDXVGwdHM2hkvcYoPEG4lFm 8iMxOzBtCLswHuGb8qrfj4BBf7RZvxRANBPFs6vKKrUW/fOT3+rAQMpzeS0uSwV7I8PnRFAumYo uMBn/+UmGM+i3BLYh8BiX4vQf9LxHeDyPMBQc2MbP0pAsXMojbKs1eRrPvly2ArTOTHx8UgCYSe 6fBdZ11mg/6nJBez0SzP4qSdkmOBJc5zLQGj2xsoWrjETX/ZX6gZtF1R/UebkXzWfhzQYapjjwr 0sVB2jouLTuY4sj0vZVg7AoM7oleVB3LV5fKl4Ebus79PYxP X-Developer-Key: i=mkl@pengutronix.de; a=openpgp; fpr=C1400BA0B3989E6FBC7D5B5C2B5EE211C58AEA54 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Since commit eaacfeaca7ad ("can: m_can: Call the RAM init directly from m_can_chip_config") m_can_init_ram() is not used outside of m_can.c. Mark as static and remove the EXPORT_SYMBOL_GPL(). Signed-off-by: Marc Kleine-Budde --- drivers/net/can/m_can/m_can.c | 43 +++++++++++++++++++++------------------= ---- drivers/net/can/m_can/m_can.h | 1 - 2 files changed, 21 insertions(+), 23 deletions(-) diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c index e1d725979685..03e2c431ffab 100644 --- a/drivers/net/can/m_can/m_can.c +++ b/drivers/net/can/m_can/m_can.c @@ -1368,6 +1368,27 @@ static const struct can_bittiming_const m_can_data_b= ittiming_const_31X =3D { .brp_inc =3D 1, }; =20 +static int m_can_init_ram(struct m_can_classdev *cdev) +{ + int end, i, start; + int err =3D 0; + + /* initialize the entire Message RAM in use to avoid possible + * ECC/parity checksum errors when reading an uninitialized buffer + */ + start =3D cdev->mcfg[MRAM_SIDF].off; + end =3D cdev->mcfg[MRAM_TXB].off + + cdev->mcfg[MRAM_TXB].num * TXB_ELEMENT_SIZE; + + for (i =3D start; i < end; i +=3D 4) { + err =3D m_can_fifo_write_no_off(cdev, i, 0x0); + if (err) + break; + } + + return err; +} + static int m_can_set_bittiming(struct net_device *dev) { struct m_can_classdev *cdev =3D netdev_priv(dev); @@ -2303,28 +2324,6 @@ static void m_can_of_parse_mram(struct m_can_classde= v *cdev, cdev->mcfg[MRAM_TXB].off, cdev->mcfg[MRAM_TXB].num); } =20 -int m_can_init_ram(struct m_can_classdev *cdev) -{ - int end, i, start; - int err =3D 0; - - /* initialize the entire Message RAM in use to avoid possible - * ECC/parity checksum errors when reading an uninitialized buffer - */ - start =3D cdev->mcfg[MRAM_SIDF].off; - end =3D cdev->mcfg[MRAM_TXB].off + - cdev->mcfg[MRAM_TXB].num * TXB_ELEMENT_SIZE; - - for (i =3D start; i < end; i +=3D 4) { - err =3D m_can_fifo_write_no_off(cdev, i, 0x0); - if (err) - break; - } - - return err; -} -EXPORT_SYMBOL_GPL(m_can_init_ram); - int m_can_class_get_clocks(struct m_can_classdev *cdev) { int ret =3D 0; diff --git a/drivers/net/can/m_can/m_can.h b/drivers/net/can/m_can/m_can.h index bd4746c63af3..46948c46d980 100644 --- a/drivers/net/can/m_can/m_can.h +++ b/drivers/net/can/m_can/m_can.h @@ -135,7 +135,6 @@ void m_can_class_free_dev(struct net_device *net); int m_can_class_register(struct m_can_classdev *cdev); void m_can_class_unregister(struct m_can_classdev *cdev); int m_can_class_get_clocks(struct m_can_classdev *cdev); -int m_can_init_ram(struct m_can_classdev *priv); int m_can_check_mram_cfg(struct m_can_classdev *cdev, u32 mram_max_size); =20 int m_can_class_suspend(struct device *dev); --=20 2.51.0