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realtek: Fix nvmem support for ethernet device

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The function of_get_mac_address is not taking care of evaluation the nvmem
address before trying to read out the mac-address properties. The driver
must check whether the return code is -EPROBE_DEFER and stop the probing
process in that case. If the nvmem-cell related driver code finished, the
probe can be redone ad the correct mac-address will appear for the device.

Signed-off-by: Harshal Gohel <hg@simonwunderlich.de>
Signed-off-by: Sharadanand Karanjkar <sk@simonwunderlich.de>
Link: https://github.com/openwrt/openwrt/pull/19362
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Harshal Gohel 2025-04-14 13:16:47 +00:00 • committed by Hauke Mehrtens
parent 664424aaeb
commit 5880f345ba
1 changed files with 4 additions and 1 deletions
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5
target/linux/realtek/files-6.12/drivers/net/ethernet/rtl838x_eth.c
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@ -3500,7 +3500,10 @@ static int __init rtl838x_eth_probe(struct platform_device *pdev)
* 1) from device tree data
* 2) from internal registers set by bootloader
*/
of_get_mac_address(pdev->dev.of_node, mac_addr);
err = of_get_mac_address(pdev->dev.of_node, mac_addr);
if (err == -EPROBE_DEFER)
return err;
if (is_valid_ether_addr(mac_addr)) {
rtl838x_set_mac_hw(dev, mac_addr);
} else {