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

Message

Michael Walle April 5, 2021, 4:46 p.m. UTC

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.


Michael Walle (2):
  of: of_net: pass the dst buffer to of_get_mac_address()
  of: net: fix of_get_mac_address_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 | 12 +--
 .../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, 240 insertions(+), 361 deletions(-)