diff options
Diffstat (limited to 'package/kernel/mt76/patches/001-of-net-pass-the-dst-buffer-to-of_get_mac_address.patch')
| -rw-r--r-- | package/kernel/mt76/patches/001-of-net-pass-the-dst-buffer-to-of_get_mac_address.patch | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/package/kernel/mt76/patches/001-of-net-pass-the-dst-buffer-to-of_get_mac_address.patch b/package/kernel/mt76/patches/001-of-net-pass-the-dst-buffer-to-of_get_mac_address.patch new file mode 100644 index 0000000000..66075f2771 --- /dev/null +++ b/package/kernel/mt76/patches/001-of-net-pass-the-dst-buffer-to-of_get_mac_address.patch @@ -0,0 +1,206 @@ +From 83216e3988cd196183542937c9bd58b279f946af Mon Sep 17 00:00:00 2001 +From: Michael Walle <michael@walle.cc> +Date: Mon, 12 Apr 2021 19:47:17 +0200 +Subject: of: net: pass the dst buffer to of_get_mac_address() + +of_get_mac_address() returns a "const void*" pointer to a MAC address. +Lately, support to fetch the MAC address by an NVMEM provider was added. +But this will only work with platform devices. It will not work with +PCI devices (e.g. of an integrated root complex) and esp. not with DSA +ports. + +There is an of_* variant of the nvmem binding which works without +devices. The returned data of a nvmem_cell_read() has to be freed after +use. On the other hand the return of_get_mac_address() points to some +static data without a lifetime. The trick for now, was to allocate a +device resource managed buffer which is then returned. This will only +work if we have an actual device. + +Change it, so that the caller of of_get_mac_address() has to supply a +buffer where the MAC address is written to. Unfortunately, this will +touch all drivers which use the of_get_mac_address(). + +Usually the code looks like: + + const char *addr; + addr = of_get_mac_address(np); + if (!IS_ERR(addr)) + ether_addr_copy(ndev->dev_addr, addr); + +This can then be simply rewritten as: + + of_get_mac_address(np, ndev->dev_addr); + +Sometimes is_valid_ether_addr() is used to test the MAC address. +of_get_mac_address() already makes sure, it just returns a valid MAC +address. Thus we can just test its return code. But we have to be +careful if there are still other sources for the MAC address before the +of_get_mac_address(). In this case we have to keep the +is_valid_ether_addr() call. + +The following coccinelle patch was used to convert common cases to the +new style. Afterwards, I've manually gone over the drivers and fixed the +return code variable: either used a new one or if one was already +available use that. Mansour Moufid, thanks for that coccinelle patch! + +<spml> +@a@ +identifier x; +expression y, z; +@@ +- x = of_get_mac_address(y); ++ x = of_get_mac_address(y, z); + <... +- ether_addr_copy(z, x); + ...> + +@@ +identifier a.x; +@@ +- if (<+... x ...+>) {} + +@@ +identifier a.x; +@@ + if (<+... x ...+>) { + ... + } +- else {} + +@@ +identifier a.x; +expression e; +@@ +- if (<+... x ...+>@e) +- {} +- else ++ if (!(e)) + {...} + +@@ +expression x, y, z; +@@ +- x = of_get_mac_address(y, z); ++ of_get_mac_address(y, z); + ... when != x +</spml> + +All drivers, except drivers/net/ethernet/aeroflex/greth.c, were +compile-time tested. + +Suggested-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: Michael Walle <michael@walle.cc> +Reviewed-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + 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 ++-- + drivers/net/ethernet/broadcom/bgmac-platform.c | 11 ++-- + drivers/net/ethernet/cadence/macb_main.c | 11 ++-- + drivers/net/ethernet/cavium/octeon/octeon_mgmt.c | 8 +-- + drivers/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 ++-- + .../net/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 +-- + .../net/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 +- + .../net/ethernet/samsung/sxgbe/sxgbe_platform.c | 13 ++--- + drivers/net/ethernet/socionext/sni_ave.c | 10 ++-- + .../net/ethernet/stmicro/stmmac/dwmac-anarion.c | 2 +- + .../ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c | 2 +- + .../net/ethernet/stmicro/stmmac/dwmac-generic.c | 2 +- + drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c | 2 +- + .../net/ethernet/stmicro/stmmac/dwmac-intel-plat.c | 2 +- + .../net/ethernet/stmicro/stmmac/dwmac-ipq806x.c | 2 +- + .../net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c | 2 +- + .../net/ethernet/stmicro/stmmac/dwmac-mediatek.c | 2 +- + drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c | 2 +- + .../net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 2 +- + drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c | 2 +- + .../ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 2 +- + drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 2 +- + .../net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 2 +- + drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c | 2 +- + drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c | 2 +- + drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 2 +- + drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c | 2 +- + .../net/ethernet/stmicro/stmmac/dwmac-visconti.c | 2 +- + drivers/net/ethernet/stmicro/stmmac/stmmac.h | 2 +- + drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- + .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 14 ++--- + .../net/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 | 8 +-- + drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 15 +++--- + drivers/net/ethernet/xilinx/xilinx_emaclite.c | 8 +-- + drivers/net/wireless/ath/ath9k/init.c | 5 +- + drivers/net/wireless/mediatek/mt76/eeprom.c | 9 +--- + drivers/net/wireless/ralink/rt2x00/rt2x00dev.c | 6 +-- + drivers/of/of_net.c | 60 ++++++++++------------ + 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, 218 insertions(+), 364 deletions(-) + +diff --git a/drivers/net/wireless/mediatek/mt76/eeprom.c b/drivers/net/wireless/mediatek/mt76/eeprom.c +index 665b54c5c8ae5..6d895738222ad 100644 +--- a/eeprom.c ++++ b/eeprom.c +@@ -91,15 +91,9 @@ void + { + struct mt76_dev *dev = phy->dev; + +-#ifdef CONFIG_OF + struct device_node *np = dev->dev->of_node; +- const u8 *mac = NULL; + +- if (np) +- mac = of_get_mac_address(np); +- if (!IS_ERR_OR_NULL(mac)) +- ether_addr_copy(phy->macaddr, mac); +-#endif ++ of_get_mac_address(np, phy->macaddr); + + if (!is_valid_ether_addr(phy->macaddr)) { + eth_random_addr(phy->macaddr); +-- +cgit 1.2.3-1.el7 + |