kernel: 5.10: compress 7xx patch numbering

[openwrt/openwrt.git] / target / linux / generic / backport-5.10 / 733-v5.15-0002-net-bgmac-platform-handle-mac-address-deferral.patch

diff --git a/target/linux/generic/backport-5.10/733-v5.15-0002-net-bgmac-platform-handle-mac-address-deferral.patch b/target/linux/generic/backport-5.10/733-v5.15-0002-net-bgmac-platform-handle-mac-address-deferral.patch
new file mode 100644 (file)
index 0000000..bde62f3
--- /dev/null
+++ b/target/linux/generic/backport-5.10/733-v5.15-0002-net-bgmac-platform-handle-mac-address-deferral.patch
@@ -0,0 +1,36 @@
+From 763716a55cb1f480ffe1a9702e6b5d9ea1a80a24 Mon Sep 17 00:00:00 2001
+From: Matthew Hagan <mnhagan88@gmail.com>
+Date: Sat, 25 Sep 2021 11:36:27 +0000
+Subject: [PATCH] net: bgmac-platform: handle mac-address deferral
+
+This patch is a replication of Christian Lamparter's "net: bgmac-bcma:
+handle deferred probe error due to mac-address" patch for the
+bgmac-platform driver [1].
+
+As is the case with the bgmac-bcma driver, this change is to cover the
+scenario where the MAC address cannot yet be discovered due to reliance
+on an nvmem provider which is yet to be instantiated, resulting in a
+random address being assigned that has to be manually overridden.
+
+[1] https://lore.kernel.org/netdev/20210919115725.29064-1-chunkeey@gmail.com
+
+Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
+Reviewed-by: Andrew Lunn <andrew@lunn.ch>
+Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/broadcom/bgmac-platform.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/net/ethernet/broadcom/bgmac-platform.c
++++ b/drivers/net/ethernet/broadcom/bgmac-platform.c
+@@ -193,6 +193,9 @@ static int bgmac_probe(struct platform_d
+       bgmac->dma_dev = &pdev->dev;
+ 
+       ret = of_get_mac_address(np, bgmac->net_dev->dev_addr);
++      if (ret == -EPROBE_DEFER)
++              return ret;
++
+       if (ret)
+               dev_warn(&pdev->dev,
+                        "MAC address not present in device tree\n");