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bcm63xx: fix bcm63xx ethernet kernel panics 

Calling netdev_reset_queue() from _stop() functions is causing sporadic kernel
panics on bcm63xx, which happen mainly on BCM6318 and BCM6328.
This reverts to the previous behaviour, which called netdev_reset_queue() from
_open() functions.

Tested on Comtrend AR-5315u (BCM6318).

Fixes: 1d6f422e34 ("bcm63xx: sync ethernet driver with net-next")
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
This commit is contained in:
Álvaro Fernández Rojas 2021-01-28 11:49:16 +01:00
parent 7521aedff4
commit 7d12f29ae1
7 changed files with 52 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
target/linux/bcm63xx/patches-5.4/047-bcm63xx_enet-fix-kernel-panic.patch Normal file
View File

@ -0,0 +1,35 @@
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -1105,6 +1105,8 @@ static int bcm_enet_open(struct net_devi
else
bcm_enet_adjust_link(dev);
+ netdev_reset_queue(dev);
+
netif_start_queue(dev);
return 0;
@@ -1193,7 +1195,6 @@ static int bcm_enet_stop(struct net_devi
kdev = &priv->pdev->dev;
netif_stop_queue(dev);
- netdev_reset_queue(dev);
napi_disable(&priv->napi);
if (priv->has_phy)
phy_stop(dev->phydev);
@@ -2267,6 +2268,7 @@ static int bcm_enetsw_open(struct net_de
enet_dmac_writel(priv, ENETDMAC_IR_PKTDONE_MASK,
ENETDMAC_IRMASK, priv->tx_chan);
+ netdev_reset_queue(dev);
netif_carrier_on(dev);
netif_start_queue(dev);
@@ -2348,7 +2350,6 @@ static int bcm_enetsw_stop(struct net_de
del_timer_sync(&priv->swphy_poll);
netif_stop_queue(dev);
- netdev_reset_queue(dev);
napi_disable(&priv->napi);
del_timer_sync(&priv->rx_timeout);

2
target/linux/bcm63xx/patches-5.4/402_bcm63xx_enet_vlan_incoming_fixed.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -1629,7 +1629,7 @@ static int bcm_enet_change_mtu(struct ne
@@ -1630,7 +1630,7 @@ static int bcm_enet_change_mtu(struct ne
return -EBUSY;
/* add ethernet header + vlan tag size */

14
target/linux/bcm63xx/patches-5.4/404-NET-bcm63xx_enet-move-phy_-dis-connect-into-probe-re.patch
View File

@ -79,7 +79,7 @@ Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
else
bcm_enet_adjust_link(dev);
@@ -1131,10 +1108,6 @@ out_freeirq_rx:
@@ -1133,10 +1110,6 @@ out_freeirq_rx:
out_freeirq:
free_irq(dev->irq, dev);
@ -90,7 +90,7 @@ Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
return ret;
}
@@ -1228,10 +1201,6 @@ static int bcm_enet_stop(struct net_devi
@@ -1229,10 +1202,6 @@ static int bcm_enet_stop(struct net_devi
free_irq(priv->irq_rx, dev);
free_irq(dev->irq, dev);
@ -101,7 +101,7 @@ Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
return 0;
}
@@ -1800,14 +1769,47 @@ static int bcm_enet_probe(struct platfor
@@ -1801,14 +1770,47 @@ static int bcm_enet_probe(struct platfor
/* do minimal hardware init to be able to probe mii bus */
bcm_enet_hw_preinit(priv);
@ -150,7 +150,7 @@ Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
}
bus = priv->mii_bus;
@@ -1831,6 +1833,26 @@ static int bcm_enet_probe(struct platfor
@@ -1832,6 +1834,26 @@ static int bcm_enet_probe(struct platfor
dev_err(&pdev->dev, "unable to register mdio bus\n");
goto out_free_mdio;
}
@ -177,7 +177,7 @@ Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
} else {
/* run platform code to initialize PHY device */
@@ -1838,45 +1860,16 @@ static int bcm_enet_probe(struct platfor
@@ -1839,45 +1861,16 @@ static int bcm_enet_probe(struct platfor
pd->mii_config(dev, 1, bcm_enet_mdio_read_mii,
bcm_enet_mdio_write_mii)) {
dev_err(&pdev->dev, "unable to configure mdio bus\n");
@ -227,7 +227,7 @@ Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
if (priv->mii_bus)
mdiobus_unregister(priv->mii_bus);
@@ -1884,6 +1877,9 @@ out_free_mdio:
@@ -1885,6 +1878,9 @@ out_free_mdio:
if (priv->mii_bus)
mdiobus_free(priv->mii_bus);
@ -237,7 +237,7 @@ Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
out_uninit_hw:
/* turn off mdc clock */
enet_writel(priv, 0, ENET_MIISC_REG);
@@ -1914,6 +1910,7 @@ static int bcm_enet_remove(struct platfo
@@ -1915,6 +1911,7 @@ static int bcm_enet_remove(struct platfo
enet_writel(priv, 0, ENET_MIISC_REG);
if (priv->has_phy) {

2
target/linux/bcm63xx/patches-5.4/408-bcm63xx_enet-enable-rgmii-clock-on-external-ports.patch
View File

@ -32,7 +32,7 @@ Subject: [PATCH 54/81] bcm63xx_enet: enable rgmii clock on external ports
#define ENETSW_MDIOC_EXT_MASK (1 << 16)
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -2183,6 +2183,18 @@ static int bcm_enetsw_open(struct net_de
@@ -2184,6 +2184,18 @@ static int bcm_enetsw_open(struct net_de
priv->sw_port_link[i] = 0;
}

12
target/linux/bcm63xx/patches-5.4/423-bcm63xx_enet_add_b53_support.patch
View File

@ -20,7 +20,7 @@
#include <bcm63xx_dev_enet.h>
#include "bcm63xx_enet.h"
@@ -1930,7 +1931,8 @@ static int bcm_enet_remove(struct platfo
@@ -1931,7 +1932,8 @@ static int bcm_enet_remove(struct platfo
return 0;
}
@ -30,7 +30,7 @@
.probe = bcm_enet_probe,
.remove = bcm_enet_remove,
.driver = {
@@ -1939,6 +1941,42 @@ struct platform_driver bcm63xx_enet_driv
@@ -1940,6 +1942,42 @@ struct platform_driver bcm63xx_enet_driv
},
};
@ -73,7 +73,7 @@
/*
* switch mii access callbacks
*/
@@ -2195,29 +2233,6 @@ static int bcm_enetsw_open(struct net_de
@@ -2196,29 +2234,6 @@ static int bcm_enetsw_open(struct net_de
enetsw_writeb(priv, rgmii_ctrl, ENETSW_RGMII_CTRL_REG(i));
}
@ -103,7 +103,7 @@
/* initialize flow control buffer allocation */
enet_dma_writel(priv, ENETDMA_BUFALLOC_FORCE_MASK | 0,
ENETDMA_BUFALLOC_REG(priv->rx_chan));
@@ -2651,6 +2666,9 @@ static int bcm_enetsw_probe(struct platf
@@ -2652,6 +2667,9 @@ static int bcm_enetsw_probe(struct platf
struct bcm63xx_enetsw_platform_data *pd;
struct resource *res_mem;
int ret, irq_rx, irq_tx;
@ -113,7 +113,7 @@
if (!bcm_enet_shared_base[0])
return -EPROBE_DEFER;
@@ -2731,6 +2749,43 @@ static int bcm_enetsw_probe(struct platf
@@ -2732,6 +2750,43 @@ static int bcm_enetsw_probe(struct platf
priv->pdev = pdev;
priv->net_dev = dev;
@ -157,7 +157,7 @@
return 0;
out_disable_clk:
@@ -2752,6 +2807,9 @@ static int bcm_enetsw_remove(struct plat
@@ -2753,6 +2808,9 @@ static int bcm_enetsw_remove(struct plat
priv = netdev_priv(dev);
unregister_netdev(dev);

2
target/linux/bcm63xx/patches-5.4/424-bcm63xx_enet_no_request_mem_region.patch
View File

@ -1,6 +1,6 @@
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -2710,9 +2710,9 @@ static int bcm_enetsw_probe(struct platf
@@ -2711,9 +2711,9 @@ static int bcm_enetsw_probe(struct platf
if (ret)
goto out;

2
target/linux/bcm63xx/patches-5.4/428-bcm63xx_enet-rgmii-ctrl-fix.patch
View File

@ -12,7 +12,7 @@
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -2230,6 +2230,10 @@ static int bcm_enetsw_open(struct net_de
@@ -2231,6 +2231,10 @@ static int bcm_enetsw_open(struct net_de
rgmii_ctrl = enetsw_readb(priv, ENETSW_RGMII_CTRL_REG(i));
rgmii_ctrl |= ENETSW_RGMII_CTRL_GMII_CLK_EN;