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Bug#622325: linux-image-2.6.38-2-orion5x: Problem With I2C



On Sun, 1 Jan 2012 01:42:36 -0600
Jonathan Nieder <jrnieder@gmail.com> wrote:

> > This bug is still present for me in the latest kernel version in
> > Debian testing (3.1.6).
> 
> Passed upstream.  But now I notice that there has been some upstream
> work in this area recently (v3.2-rc7~23^2~1, rtc: m41t80: Workaround
> broken alarm functionality, 2011-12-12).
> 
> Please test v3.2-rc7 from experimental and let the upstream folks
> know how it fares (by replying-to-all on the other side thread).

Hello,

I have now upgraded to linux-image-3.1.0-1-orion5x (3.1.8-2) from testing.

According to http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1.8
it has the "rtc: m41t80: Workaround broken alarm functionality" patch included.
However, it does not solve the problem. The messages continue to appear:

[   34.442094] mv643xx_eth_port mv643xx_eth_port.0: eth0: link up, 1000 Mb/s, full duplex, flow control disabled
[   34.452167] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   35.107852] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[   37.107743] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[   41.007743] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[   43.007755] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[   45.007747] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[   47.007744] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[   50.090809] mv643xx_eth_port mv643xx_eth_port.0: eth0: link up, 1000 Mb/s, full duplex, flow control disabled
[   85.637697] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[   87.637699] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[   89.637693] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[   91.647701] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[   93.647738] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0
[   95.647701] i2c i2c-0: mv64xxx: I2C bus locked, block: 1, time_left: 0

Fan does not rotate (verified visually) and the temperature sensor does not work:

# sensors
g760a-i2c-0-3e
Adapter: mv64xxx_i2c adapter
fan1:           0 RPM

lm75-i2c-0-48
Adapter: mv64xxx_i2c adapter
temp1:         +0.0°C  (high =  +0.0°C, hyst =  +0.0°C)

-- 
With respect,
Roman

~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Stallman had a printer,
with code he could not see.
So he began to tinker,
and set the software free."

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