netdev - RE: RTL8153 fails to get link after applying c7de7dec2 to 3.8 kernel

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Date:	Wed, 12 Feb 2014 11:47:00 +0800
From:	hayeswang <hayeswang@...ltek.com>
To:	'Grant Grundler' <grundler@...gle.com>
CC:	'Inki Yoo' <inky.yoo@...sung.com>,
	'netdev' <netdev@...r.kernel.org>,
	'David Miller' <davem@...emloft.net>
Subject: RE: RTL8153 fails to get link after applying c7de7dec2 to 3.8 kernel

 Grant Grundler [mailto:grundler@...gle.com] 
> Sent: Wednesday, February 12, 2014 6:27 AM
> To: hayeswang
> Cc: Inki Yoo; netdev; David Miller
> Subject: Re: RTL8153 fails to get link after applying 
> c7de7dec2 to 3.8 kernel
[...]
> > I would test the RTL8153 again with kernel 3.14-RC2.
> 
> Ok - if it worked before...I expect it will continue to work for you.

It still works for me. The followings are some messages from Fedora 20 with kernel 3.14.rc2.

# uname -a
Linux fc20.localdomain 3.14.0-rc2 #1 SMP Tue Feb 11 12:36:32 CST 2014 x86_64 x86_64 x86_64 GNU/Linux

# dmesg | tail
[   95.967662] usb 9-1: new SuperSpeed USB device number 2 using xhci_hcd
[   95.984017] usb 9-1: New USB device found, idVendor=0bda, idProduct=8153
[   95.984022] usb 9-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[   95.984026] usb 9-1: Product: USB 10/100/1000 LAN
[   95.984030] usb 9-1: Manufacturer: Realtek
[   95.984033] usb 9-1: SerialNumber: 00E04C680022
[   96.011116] usbcore: registered new interface driver cdc_ether
[   96.020634] r815x 9-1:2.0 eth0: register 'r815x' at usb-0000:04:00.0-1, RTL8153 ECM Device, 00:e0:4c:68:00:22
[   96.021866] usbcore: registered new interface driver r815x

# lsusb -d 0bda:8153
Bus 009 Device 002: ID 0bda:8153 Realtek Semiconductor Corp. 

# ethtool -i eth0
driver: r815x
version: 22-Aug-2005
firmware-version: RTL8153 ECM Device
bus-info: usb-0000:04:00.0-1
supports-statistics: no
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no

# ethtool eth0
Settings for eth0:
	Supported ports: [ TP MII ]
	Supported link modes:   10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Half 1000baseT/Full 
	Supported pause frame use: No
	Supports auto-negotiation: Yes
	Advertised link modes:  10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	                        1000baseT/Full 
	Advertised pause frame use: No
	Advertised auto-negotiation: Yes
	Link partner advertised link modes:  10baseT/Half 10baseT/Full 
	                                     100baseT/Half 100baseT/Full 
	                                     1000baseT/Half 1000baseT/Full 
	Link partner advertised pause frame use: Symmetric Receive-only
	Link partner advertised auto-negotiation: Yes
	Speed: 1000Mb/s
	Duplex: Full
	Port: MII
	PHYAD: 32
	Transceiver: internal
	Auto-negotiation: on
	Current message level: 0x00000007 (7)
			       drv probe link
	Link detected: yes

# ifconfig eth0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.94.35  netmask 255.255.255.0  broadcast 192.168.94.255
        inet6 fe80::2e0:4cff:fe68:22  prefixlen 64  scopeid 0x20<link>
        ether 00:e0:4c:68:00:22  txqueuelen 1000  (Ethernet)
        RX packets 6  bytes 1593 (1.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 51  bytes 6165 (6.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
 
> > Does it work if you unplug and plug the dangle again?
> 
> No, it didn't. Same symptom. I did try that.

Is your dangle from Samsung?
I would ask our PM to check if there is any difference between our devices.
Maybe it is not the driver issue.
 
Best Regards,
Hayes

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