From: Rosen Penev Date: Sat, 24 Aug 2024 20:02:37 +0000 (-0700) Subject: net: ag71xx: support probe defferal for getting MAC address X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=be04024a24a93f761a7b2c5f2de46db0f3acdc74;p=users%2Fjedix%2Flinux-maple.git net: ag71xx: support probe defferal for getting MAC address Currently, of_get_ethdev_address() return is checked for any return error code which means that trying to get the MAC from NVMEM cells that is backed by MTD will fail if it was not probed before ag71xx. So, lets check the return error code for EPROBE_DEFER and defer the ag71xx probe in that case until the underlying NVMEM device is live. Signed-off-by: Robert Marko Signed-off-by: Rosen Penev Reviewed-by: Oleksij Rempel Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20240824200249.137209-1-rosenp@gmail.com Signed-off-by: Jakub Kicinski --- diff --git a/drivers/net/ethernet/atheros/ag71xx.c b/drivers/net/ethernet/atheros/ag71xx.c index bf02bea03a7b..543cbea47138 100644 --- a/drivers/net/ethernet/atheros/ag71xx.c +++ b/drivers/net/ethernet/atheros/ag71xx.c @@ -1895,6 +1895,8 @@ static int ag71xx_probe(struct platform_device *pdev) ag->stop_desc->next = (u32)ag->stop_desc_dma; err = of_get_ethdev_address(np, ndev); + if (err == -EPROBE_DEFER) + return err; if (err) { netif_err(ag, probe, ndev, "invalid MAC address, using random address\n"); eth_hw_addr_random(ndev);