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bcm4908: fix -EPROBE_DEFER support in bcm4908_enet 

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit 1722e23ffc)
This commit is contained in:
Rafał Miłecki 2022-09-21 10:44:32 +02:00
parent 4c45c111e0
commit f33b14d116
2 changed files with 64 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
target/linux/bcm4908/patches-5.4/170-net-broadcom-bcm4908_enet-reset-DMA-rings-sw-indexes.patch → target/linux/bcm4908/patches-5.4/077-v5.14-net-broadcom-bcm4908_enet-reset-DMA-rings-sw-indexes.patch
View File

@ -1,5 +1,6 @@
From ddeacc4f6494e07cbb6f033627926623f3e7a9d0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Tue, 22 Jun 2021 07:05:04 +0200
Date: Tue, 22 Jun 2021 07:24:15 +0200
Subject: [PATCH] net: broadcom: bcm4908_enet: reset DMA rings sw indexes
properly
MIME-Version: 1.0
@ -15,6 +16,7 @@ down & up sequence.
Fixes: 4feffeadbcb2 ("net: broadcom: bcm4908enet: add BCM4908 controller driver")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/broadcom/bcm4908_enet.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

61
target/linux/bcm4908/patches-5.4/078-v6.1-net-broadcom-bcm4908_enet-handle-EPROBE_DEFER-when-g.patch Normal file
View File

@ -0,0 +1,61 @@
From e93a766da57fff3273bcb618edf5dfca1fb86b89 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Thu, 15 Sep 2022 15:30:13 +0200
Subject: [PATCH] net: broadcom: bcm4908_enet: handle -EPROBE_DEFER when
getting MAC
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Reading MAC from OF may return -EPROBE_DEFER if underlaying NVMEM device
isn't ready yet. In such case pass that error code up and "wait" to be
probed later.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Link: https://lore.kernel.org/r/20220915133013.2243-1-zajec5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/ethernet/broadcom/bcm4908_enet.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
--- a/drivers/net/ethernet/broadcom/bcm4908_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm4908_enet.c
@@ -716,10 +716,14 @@ static int bcm4908_enet_probe(struct pla
SET_NETDEV_DEV(netdev, &pdev->dev);
mac = of_get_mac_address(dev->of_node);
- if (!IS_ERR(mac))
+ if (!IS_ERR(mac)) {
ether_addr_copy(netdev->dev_addr, mac);
- else
+ } else if (PTR_ERR(mac) == -EPROBE_DEFER) {
+ err = -EPROBE_DEFER;
+ goto err_dma_free;
+ } else {
eth_hw_addr_random(netdev);
+ }
netdev->netdev_ops = &bcm4908_enet_netdev_ops;
netdev->min_mtu = ETH_ZLEN;
netdev->mtu = ETH_DATA_LEN;
@@ -728,14 +732,17 @@ static int bcm4908_enet_probe(struct pla
netif_napi_add(netdev, &enet->rx_ring.napi, bcm4908_enet_poll_rx, NAPI_POLL_WEIGHT);
err = register_netdev(netdev);
- if (err) {
- bcm4908_enet_dma_free(enet);
- return err;
- }
+ if (err)
+ goto err_dma_free;
platform_set_drvdata(pdev, enet);
return 0;
+
+err_dma_free:
+ bcm4908_enet_dma_free(enet);
+
+ return err;
}
static int bcm4908_enet_remove(struct platform_device *pdev)