[PATCH net-next v2 0/2] of: net: support non-platform devices in of_get_mac_address()

From: Michael Walle <michael@walle.cc>
To: ath9k-devel@qca.qualcomm.com, UNGLinuxDriver@microchip.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	netdev@vger.kernel.org, linux-mediatek@lists.infradead.org,
	linux-renesas-soc@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-amlogic@lists.infradead.org, linux-oxnas@groups.io,
	linux-omap@vger.kernel.org, linux-wireless@vger.kernel.org,
	devicetree@vger.kernel.org, linux-staging@lists.linux.dev
Cc: "Andrew Lunn" <andrew@lunn.ch>,
	"Gregory Clement" <gregory.clement@bootlin.com>,
	"Sebastian Hesselbarth" <sebastian.hesselbarth@gmail.com>,
	"Russell King" <linux@armlinux.org.uk>,
	"Michael Ellerman" <mpe@ellerman.id.au>,
	"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
	"Paul Mackerras" <paulus@samba.org>,
	"Andreas Larsson" <andreas@gaisler.com>,
	"David S . Miller" <davem@davemloft.net>,
	"Jakub Kicinski" <kuba@kernel.org>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Chen-Yu Tsai" <wens@csie.org>,
	"Jernej Skrabec" <jernej.skrabec@siol.net>,
	"Joyce Ooi" <joyce.ooi@intel.com>,
	"Chris Snook" <chris.snook@gmail.com>,
	"Rafał Miłecki" <rafal@milecki.pl>,
	bcm-kernel-feedback-list@broadcom.com,
	"Florian Fainelli" <f.fainelli@gmail.com>,
	"Nicolas Ferre" <nicolas.ferre@microchip.com>,
	"Claudiu Beznea" <claudiu.beznea@microchip.com>,
	"Sunil Goutham" <sgoutham@marvell.com>,
	"Fugang Duan" <fugang.duan@nxp.com>,
	"Madalin Bucur" <madalin.bucur@nxp.com>,
	"Pantelis Antoniou" <pantelis.antoniou@gmail.com>,
	"Claudiu Manoil" <claudiu.manoil@nxp.com>,
	"Li Yang" <leoyang.li@nxp.com>,
	"Yisen Zhuang" <yisen.zhuang@huawei.com>,
	"Salil Mehta" <salil.mehta@huawei.com>,
	"Hauke Mehrtens" <hauke@hauke-m.de>,
	"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
	"Vadym Kochan" <vkochan@marvell.com>,
	"Taras Chornyi" <tchornyi@marvell.com>,
	"Mirko Lindner" <mlindner@marvell.com>,
	"Stephen Hemminger" <stephen@networkplumber.org>,
	"Felix Fietkau" <nbd@nbd.name>, "John Crispin" <john@phrozen.org>,
	"Sean Wang" <sean.wang@mediatek.com>,
	"Mark Lee" <Mark-MC.Lee@mediatek.com>,
	"Matthias Brugger" <matthias.bgg@gmail.com>,
	"Bryan Whitehead" <bryan.whitehead@microchip.com>,
	"Vladimir Zapolskiy" <vz@mleia.com>,
	"Sergei Shtylyov" <sergei.shtylyov@gmail.com>,
	"Byungho An" <bh74.an@samsung.com>,
	"Kunihiko Hayashi" <hayashi.kunihiko@socionext.com>,
	"Giuseppe Cavallaro" <peppe.cavallaro@st.com>,
	"Alexandre Torgue" <alexandre.torgue@st.com>,
	"Jose Abreu" <joabreu@synopsys.com>,
	"Maxime Coquelin" <mcoquelin.stm32@gmail.com>,
	"Shawn Guo" <shawnguo@kernel.org>,
	"Sascha Hauer" <s.hauer@pengutronix.de>,
	"Pengutronix Kernel Team" <kernel@pengutronix.de>,
	"Fabio Estevam" <festevam@gmail.com>,
	"NXP Linux Team" <linux-imx@nxp.com>,
	"Kevin Hilman" <khilman@baylibre.com>,
	"Neil Armstrong" <narmstrong@baylibre.com>,
	"Jerome Brunet" <jbrunet@baylibre.com>,
	"Martin Blumenstingl" <martin.blumenstingl@googlemail.com>,
	"Vinod Koul" <vkoul@kernel.org>,
	"Nobuhiro Iwamatsu" <nobuhiro1.iwamatsu@toshiba.co.jp>,
	"Grygorii Strashko" <grygorii.strashko@ti.com>,
	"Wingman Kwok" <w-kwok2@ti.com>,
	"Murali Karicheri" <m-karicheri2@ti.com>,
	"Michal Simek" <michal.simek@xilinx.com>,
	"Radhey Shyam Pandey" <radhey.shyam.pandey@xilinx.com>,
	"Kalle Valo" <kvalo@codeaurora.org>,
	"Lorenzo Bianconi" <lorenzo.bianconi83@gmail.com>,
	"Ryder Lee" <ryder.lee@mediatek.com>,
	"Stanislaw Gruszka" <stf_xl@wp.pl>,
	"Helmut Schaa" <helmut.schaa@googlemail.com>,
	"Heiner Kallweit" <hkallweit1@gmail.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Frank Rowand" <frowand.list@gmail.com>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Jérôme Pouiller" <jerome.pouiller@silabs.com>,
	"Vivien Didelot" <vivien.didelot@gmail.com>,
	"Vladimir Oltean" <olteanv@gmail.com>,
	"Michael Walle" <michael@walle.cc>
Subject: [PATCH net-next v2 0/2] of: net: support non-platform devices in of_get_mac_address()
Date: Tue,  6 Apr 2021 17:37:23 +0200	[thread overview]
Message-ID: <20210406153725.10059-1-michael@walle.cc> (raw)

of_get_mac_address() is commonly used to fetch the MAC address
from the device tree. It also supports reading it from a NVMEM
provider. But the latter is only possible for platform devices,
because only platform devices are searched for a matching device
node.

Add a second method to fetch the NVMEM cell by a device tree node
instead of a "struct device".

Moreover, the NVMEM subsystem will return dynamically allocated
data which has to be freed after use. Currently, this is handled
by allocating a device resource manged buffer to store the MAC
address. of_get_mac_address() then returns a pointer to this
buffer. Without a device, this trick is not possible anymore.
Thus, change the of_get_mac_address() API to have the caller
supply a buffer.

It was considered to use the network device to attach the buffer
to, but then the order matters and netdev_register() has to be
called before of_get_mac_address(). No driver does it this way.

changes since v1:
 - fixed stmmac_probe_config_dt() for !CONFIG_OF
 - added missing queue in patch subject

Michael Walle (2):
  of: net: pass the dst buffer to of_get_mac_address()
  of: net: fix of_get_mac_addr_nvmem() for PCI and DSA nodes

 arch/arm/mach-mvebu/kirkwood.c                |  3 +-
 arch/powerpc/sysdev/tsi108_dev.c              |  5 +-
 drivers/net/ethernet/aeroflex/greth.c         |  6 +-
 drivers/net/ethernet/allwinner/sun4i-emac.c   | 10 +--
 drivers/net/ethernet/altera/altera_tse_main.c |  7 +-
 drivers/net/ethernet/arc/emac_main.c          |  8 +-
 drivers/net/ethernet/atheros/ag71xx.c         |  7 +-
 drivers/net/ethernet/broadcom/bcm4908_enet.c  |  7 +-
 drivers/net/ethernet/broadcom/bcmsysport.c    |  7 +-
 drivers/net/ethernet/broadcom/bgmac-bcma.c    | 10 +--
 .../net/ethernet/broadcom/bgmac-platform.c    | 11 ++-
 drivers/net/ethernet/cadence/macb_main.c      | 11 +--
 .../net/ethernet/cavium/octeon/octeon_mgmt.c  |  8 +-
 .../net/ethernet/cavium/thunder/thunder_bgx.c |  5 +-
 drivers/net/ethernet/davicom/dm9000.c         | 10 +--
 drivers/net/ethernet/ethoc.c                  |  6 +-
 drivers/net/ethernet/ezchip/nps_enet.c        |  7 +-
 drivers/net/ethernet/freescale/fec_main.c     |  7 +-
 drivers/net/ethernet/freescale/fec_mpc52xx.c  |  7 +-
 drivers/net/ethernet/freescale/fman/mac.c     |  9 +-
 .../ethernet/freescale/fs_enet/fs_enet-main.c |  5 +-
 drivers/net/ethernet/freescale/gianfar.c      |  8 +-
 drivers/net/ethernet/freescale/ucc_geth.c     |  5 +-
 drivers/net/ethernet/hisilicon/hisi_femac.c   |  7 +-
 drivers/net/ethernet/hisilicon/hix5hd2_gmac.c |  7 +-
 drivers/net/ethernet/lantiq_xrx200.c          |  7 +-
 drivers/net/ethernet/marvell/mv643xx_eth.c    |  5 +-
 drivers/net/ethernet/marvell/mvneta.c         |  6 +-
 .../ethernet/marvell/prestera/prestera_main.c | 11 +--
 drivers/net/ethernet/marvell/pxa168_eth.c     |  9 +-
 drivers/net/ethernet/marvell/sky2.c           |  8 +-
 drivers/net/ethernet/mediatek/mtk_eth_soc.c   | 11 +--
 drivers/net/ethernet/micrel/ks8851_common.c   |  7 +-
 drivers/net/ethernet/microchip/lan743x_main.c |  5 +-
 drivers/net/ethernet/nxp/lpc_eth.c            |  4 +-
 drivers/net/ethernet/qualcomm/qca_spi.c       | 10 +--
 drivers/net/ethernet/qualcomm/qca_uart.c      |  9 +-
 drivers/net/ethernet/renesas/ravb_main.c      | 12 +--
 drivers/net/ethernet/renesas/sh_eth.c         |  5 +-
 .../ethernet/samsung/sxgbe/sxgbe_platform.c   | 13 +--
 drivers/net/ethernet/socionext/sni_ave.c      | 10 +--
 .../ethernet/stmicro/stmmac/dwmac-anarion.c   |  2 +-
 .../stmicro/stmmac/dwmac-dwc-qos-eth.c        |  2 +-
 .../ethernet/stmicro/stmmac/dwmac-generic.c   |  2 +-
 .../net/ethernet/stmicro/stmmac/dwmac-imx.c   |  2 +-
 .../stmicro/stmmac/dwmac-intel-plat.c         |  2 +-
 .../ethernet/stmicro/stmmac/dwmac-ipq806x.c   |  2 +-
 .../ethernet/stmicro/stmmac/dwmac-lpc18xx.c   |  2 +-
 .../ethernet/stmicro/stmmac/dwmac-mediatek.c  |  2 +-
 .../net/ethernet/stmicro/stmmac/dwmac-meson.c |  2 +-
 .../ethernet/stmicro/stmmac/dwmac-meson8b.c   |  2 +-
 .../net/ethernet/stmicro/stmmac/dwmac-oxnas.c |  2 +-
 .../stmicro/stmmac/dwmac-qcom-ethqos.c        |  2 +-
 .../net/ethernet/stmicro/stmmac/dwmac-rk.c    |  2 +-
 .../ethernet/stmicro/stmmac/dwmac-socfpga.c   |  2 +-
 .../net/ethernet/stmicro/stmmac/dwmac-sti.c   |  2 +-
 .../net/ethernet/stmicro/stmmac/dwmac-stm32.c |  2 +-
 .../net/ethernet/stmicro/stmmac/dwmac-sun8i.c |  2 +-
 .../net/ethernet/stmicro/stmmac/dwmac-sunxi.c |  2 +-
 .../ethernet/stmicro/stmmac/dwmac-visconti.c  |  2 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac.h  |  2 +-
 .../net/ethernet/stmicro/stmmac/stmmac_main.c |  4 +-
 .../ethernet/stmicro/stmmac/stmmac_platform.c | 14 +--
 .../ethernet/stmicro/stmmac/stmmac_platform.h |  2 +-
 drivers/net/ethernet/ti/am65-cpsw-nuss.c      | 19 ++---
 drivers/net/ethernet/ti/cpsw.c                |  7 +-
 drivers/net/ethernet/ti/cpsw_new.c            |  7 +-
 drivers/net/ethernet/ti/davinci_emac.c        |  8 +-
 drivers/net/ethernet/ti/netcp_core.c          |  7 +-
 drivers/net/ethernet/wiznet/w5100-spi.c       |  8 +-
 drivers/net/ethernet/wiznet/w5100.c           |  2 +-
 drivers/net/ethernet/xilinx/ll_temac_main.c   |  6 +-
 .../net/ethernet/xilinx/xilinx_axienet_main.c | 11 +--
 drivers/net/ethernet/xilinx/xilinx_emaclite.c |  8 +-
 drivers/net/wireless/ath/ath9k/init.c         |  5 +-
 drivers/net/wireless/mediatek/mt76/eeprom.c   |  9 +-
 .../net/wireless/ralink/rt2x00/rt2x00dev.c    |  6 +-
 drivers/of/of_net.c                           | 85 ++++++++++++-------
 drivers/staging/octeon/ethernet.c             | 10 +--
 drivers/staging/wfx/main.c                    |  7 +-
 include/linux/of_net.h                        |  6 +-
 include/net/dsa.h                             |  2 +-
 net/dsa/dsa2.c                                |  2 +-
 net/dsa/slave.c                               |  2 +-
 net/ethernet/eth.c                            | 11 +--
 85 files changed, 241 insertions(+), 362 deletions(-)

-- 
2.20.1