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linux/drivers/net/usb
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Fabio Estevam c70c453abc smsc95xx: Ignore -ENODEV errors when device is unplugged 
According to Documentation/driver-api/usb/URB.rst when a device
is unplugged usb_submit_urb() returns -ENODEV.

This error code propagates all the way up to usbnet_read_cmd() and
usbnet_write_cmd() calls inside the smsc95xx.c driver during
Ethernet cable unplug, unbind or reboot.

This causes the following errors to be shown on reboot, for example:

ci_hdrc ci_hdrc.1: remove, state 1
usb usb2: USB disconnect, device number 1
usb 2-1: USB disconnect, device number 2
usb 2-1.1: USB disconnect, device number 3
smsc95xx 2-1.1:1.0 eth1: unregister 'smsc95xx' usb-ci_hdrc.1-1.1, smsc95xx USB 2.0 Ethernet
smsc95xx 2-1.1:1.0 eth1: Failed to read reg index 0x00000114: -19
smsc95xx 2-1.1:1.0 eth1: Error reading MII_ACCESS
smsc95xx 2-1.1:1.0 eth1: __smsc95xx_mdio_read: MII is busy
smsc95xx 2-1.1:1.0 eth1: Failed to read reg index 0x00000114: -19
smsc95xx 2-1.1:1.0 eth1: Error reading MII_ACCESS
smsc95xx 2-1.1:1.0 eth1: __smsc95xx_mdio_read: MII is busy
smsc95xx 2-1.1:1.0 eth1: hardware isn't capable of remote wakeup
usb 2-1.4: USB disconnect, device number 4
ci_hdrc ci_hdrc.1: USB bus 2 deregistered
ci_hdrc ci_hdrc.0: remove, state 4
usb usb1: USB disconnect, device number 1
ci_hdrc ci_hdrc.0: USB bus 1 deregistered
imx2-wdt 30280000.watchdog: Device shutdown: Expect reboot!
reboot: Restarting system

Ignore the -ENODEV errors inside __smsc95xx_mdio_read() and
__smsc95xx_phy_wait_not_busy() and do not print error messages
when -ENODEV is returned.

Fixes: a049a30fc2 ("net: usb: Correct PHY handling of smsc95xx")
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-03-07 12:32:31 +00:00
..
aqc111.c ethernet: constify references to netdev->dev_addr in drivers 2021-10-14 09:22:11 -07:00
aqc111.h
asix_common.c asix: fix wrong return value in asix_check_host_enable() 2021-12-22 14:52:18 -08:00
asix_devices.c net: usb: use eth_hw_addr_set() 2021-10-02 14:18:25 +01:00
asix.h net: usb: asix: ax88772: move embedded PHY detection as early as possible 2021-08-23 12:39:41 +01:00
ax88172a.c net: usb: use eth_hw_addr_set() 2021-10-02 14:18:25 +01:00
ax88179_178a.c net: usb: ax88179_178a: Fix out-of-bounds accesses in RX fixup 2022-02-11 10:57:07 +01:00
catc.c usbb: catc: use correct API for MAC addresses 2021-10-25 15:34:02 +01:00
cdc_eem.c
cdc_ether.c USB: zaurus: support another broken Zaurus 2022-02-14 14:37:15 +00:00
cdc_mbim.c net: usb: cdc_mbim: avoid altsetting toggling for Telit FN990 2022-02-17 14:50:43 +00:00
cdc_ncm.c CDC-NCM: avoid overflow in sanity checking 2022-02-15 14:56:10 +00:00
cdc_subset.c
cdc-phonet.c net: remove single-byte netdev->dev_addr writes 2021-10-13 10:03:59 -07:00
ch9200.c net: usb: don't write directly to netdev->dev_addr 2021-10-22 10:16:01 -07:00
cx82310_eth.c net: usb: don't write directly to netdev->dev_addr 2021-10-22 10:16:01 -07:00
dm9601.c ethernet: constify references to netdev->dev_addr in drivers 2021-10-14 09:22:11 -07:00
gl620a.c
hso.c net: hso: fix muxed tty registration 2021-09-17 11:19:58 +01:00
huawei_cdc_ncm.c
int51x1.c
ipheth.c ipheth: fix EOVERFLOW in ipheth_rcvbulk_callback 2022-02-01 20:25:38 -08:00
kalmia.c net: usb: use eth_hw_addr_set() 2021-10-02 14:18:25 +01:00
kaweth.c net: usb: don't write directly to netdev->dev_addr 2021-10-22 10:16:01 -07:00
Kconfig lan78xx: select CRC32 2021-10-15 14:34:35 +01:00
lan78xx.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-12-16 16:13:19 -08:00
lan78xx.h
lg-vl600.c
Makefile
mcs7830.c net: mcs7830: handle usb read errors properly 2022-01-09 16:35:50 -08:00
net1080.c
pegasus.c net: usb: pegasus: Do not drop long Ethernet frames 2021-12-27 14:52:06 +00:00
pegasus.h
plusb.c
qmi_wwan.c net: usb: qmi_wwan: Add support for Dell DW5829e 2022-02-09 17:13:52 -08:00
r8152.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-01-05 14:36:10 -08:00
r8153_ecm.c
rndis_host.c rndis_host: support Hytera digital radios 2022-01-02 16:12:45 +00:00
rtl8150.c net: usb: use eth_hw_addr_set() for dev->addr_len cases 2021-10-05 13:16:48 +01:00
sierra_net.c net: usb: don't write directly to netdev->dev_addr 2021-10-22 10:16:01 -07:00
smsc75xx.c usb: smsc: use eth_hw_addr_set() 2021-10-22 10:15:56 -07:00
smsc75xx.h
smsc95xx.c smsc95xx: Ignore -ENODEV errors when device is unplugged 2022-03-07 12:32:31 +00:00
smsc95xx.h
sr9700.c sr9700: sanity check for packet length 2022-02-18 11:05:08 +00:00
sr9700.h
sr9800.c net: usb: don't write directly to netdev->dev_addr 2021-10-22 10:16:01 -07:00
sr9800.h
usbnet.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-10-28 10:43:58 -07:00
zaurus.c USB: zaurus: support another broken Zaurus 2022-02-14 14:37:15 +00:00