| Message ID | 20231022151911.4279-1-aford173@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [V2] net: ethernet: davinci_emac: Use MAC Address from Device Tree | expand |
On 10/22/2023 8:19 AM, Adam Ford wrote: > Currently there is a device tree entry called "local-mac-address" > which can be filled by the bootloader or manually set.This is > useful when the user does not want to use the MAC address > programmed into the SoC. > > Currently, the davinci_emac reads the MAC from the DT, copies > it from pdata->mac_addr to priv->mac_addr, then blindly overwrites > it by reading from registers in the SoC, and falls back to a > random MAC if it's still not valid. This completely ignores any > MAC address in the device tree. > > In order to use the local-mac-address, check to see if the contents > of priv->mac_addr are valid before falling back to reading from the > SoC when the MAC address is not valid. > > Signed-off-by: Adam Ford <aford173@gmail.com> > Reviewed-by: Andrew Lunn <andrew@lunn.ch> > --- > V2: Rebase, add R-B tag, and post stand-alone for netdev branch, since > the device tree patch has already been accepted via the omap tree. Looks like you didn't add the tag for which tree. Given the context, I would assume net-next. Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
On Mon, Oct 23, 2023 at 7:14 PM Jacob Keller <jacob.e.keller@intel.com> wrote: > > > > On 10/22/2023 8:19 AM, Adam Ford wrote: > > Currently there is a device tree entry called "local-mac-address" > > which can be filled by the bootloader or manually set.This is > > useful when the user does not want to use the MAC address > > programmed into the SoC. > > > > Currently, the davinci_emac reads the MAC from the DT, copies > > it from pdata->mac_addr to priv->mac_addr, then blindly overwrites > > it by reading from registers in the SoC, and falls back to a > > random MAC if it's still not valid. This completely ignores any > > MAC address in the device tree. > > > > In order to use the local-mac-address, check to see if the contents > > of priv->mac_addr are valid before falling back to reading from the > > SoC when the MAC address is not valid. > > > > Signed-off-by: Adam Ford <aford173@gmail.com> > > Reviewed-by: Andrew Lunn <andrew@lunn.ch> > > --- > > V2: Rebase, add R-B tag, and post stand-alone for netdev branch, since > > the device tree patch has already been accepted via the omap tree. > > Looks like you didn't add the tag for which tree. Given the context, I > would assume net-next. > That was my intent. I sent the e-mail to netdev and CC'd others. I thought that was enough. > Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
On Mon, 2023-10-23 at 20:22 -0500, Adam Ford wrote: > On Mon, Oct 23, 2023 at 7:14 PM Jacob Keller <jacob.e.keller@intel.com> wrote: > > Looks like you didn't add the tag for which tree. Given the context, I > > would assume net-next. > > That was my intent. I sent the e-mail to netdev and CC'd others. I > thought that was enough. For future submissions: there are 2 different netdev trees, one for new features (net-next) and another one for bugfixes (net), and you should specify the target explcitly in the patch prefix. See: Documentation/process/maintainer-netdev.rst for the more details. Looks like this one is targeting net-next. Cheers, Paolo
Hello: This patch was applied to netdev/net-next.git (main) by Paolo Abeni <pabeni@redhat.com>: On Sun, 22 Oct 2023 10:19:11 -0500 you wrote: > Currently there is a device tree entry called "local-mac-address" > which can be filled by the bootloader or manually set.This is > useful when the user does not want to use the MAC address > programmed into the SoC. > > Currently, the davinci_emac reads the MAC from the DT, copies > it from pdata->mac_addr to priv->mac_addr, then blindly overwrites > it by reading from registers in the SoC, and falls back to a > random MAC if it's still not valid. This completely ignores any > MAC address in the device tree. > > [...] Here is the summary with links: - [V2] net: ethernet: davinci_emac: Use MAC Address from Device Tree https://git.kernel.org/netdev/net-next/c/f30a51a41828 You are awesome, thank you!
diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c index 23f8bc1cd20d..b0950a318c42 100644 --- a/drivers/net/ethernet/ti/davinci_emac.c +++ b/drivers/net/ethernet/ti/davinci_emac.c @@ -1928,18 +1928,20 @@ static int davinci_emac_probe(struct platform_device *pdev) goto err_free_rxchan; ndev->irq = rc; - rc = davinci_emac_try_get_mac(pdev, res_ctrl ? 0 : 1, priv->mac_addr); - if (!rc) - eth_hw_addr_set(ndev, priv->mac_addr); - + /* If the MAC address is not present, read the registers from the SoC */ if (!is_valid_ether_addr(priv->mac_addr)) { - /* Use random MAC if still none obtained. */ - eth_hw_addr_random(ndev); - memcpy(priv->mac_addr, ndev->dev_addr, ndev->addr_len); - dev_warn(&pdev->dev, "using random MAC addr: %pM\n", - priv->mac_addr); + rc = davinci_emac_try_get_mac(pdev, res_ctrl ? 0 : 1, priv->mac_addr); + if (!rc) + eth_hw_addr_set(ndev, priv->mac_addr); + + if (!is_valid_ether_addr(priv->mac_addr)) { + /* Use random MAC if still none obtained. */ + eth_hw_addr_random(ndev); + memcpy(priv->mac_addr, ndev->dev_addr, ndev->addr_len); + dev_warn(&pdev->dev, "using random MAC addr: %pM\n", + priv->mac_addr); + } } - ndev->netdev_ops = &emac_netdev_ops; ndev->ethtool_ops = ðtool_ops; netif_napi_add(ndev, &priv->napi, emac_poll);