[imx27 - mcp251x] MCP251x does not work in static ?

["Mylene Josserand" <Mylene.Josserand@navocap.com>]

Hi everyone,


I have posted in December 2012 a post about "[mcp251x - spi] Blocked to 
"wait_for_completion"".

To resolve the problem of CAN/spi and others, I am currently updating 
our kernel to the version 3.8.2 ! The SoC is a IMX27 and the CAN 
controller is MCP2515.

Currently, I have another problem with the MCP251x driver.

When I compile the driver in static, the kernel stopped booting. With 
some printk, the driver is blocked at the function "spi_write" of the 
function "mcp251x_hw_reset". The dmesg with my outputs :

"
spi_imx imx27-cspi.0: master is unqueued, this is deprecated
spi_imx imx27-cspi.0: probed
CAN device driver interface
mcp251x_can_init
mcp251x_clean
mcp251x_can_probe
mcp251x_hw_probe
mcp251x_hw_reset
mcp251x_hw_reset : spi_write : start
"

I thought that it was a spi problem because of the warning "master is 
unqueued, this is deprecated" but in fact the spi works.
One surprising thing (for me) is that the MCP251x compiled in module is 
probed ! (I did not test it yet)

"
root@navocap:~# modprobe mcp251x
mcp251x_can_init
sdrv->probe = bf09047c
sdrv->remove = bf08f348
mcp251x_clean
mcp251x_can_probe
mcp251x_hw_probe
mcp251x_hw_reset
mcp251x_hw_reset : spi_write : start
mcp251x_hw_reset : spi_write : end
mcp251x_read_reg
mcp251x_spi_trans
mcp251x_hw_reset : end
mcp251x_hw_probe : hw_reset done
mcp251x_read_reg
mcp251x_spi_trans
mcp251x_read_reg
mcp251x_spi_trans
mcp251x_hw_sleep
mcp251x_write_reg
mcp251x_spi_trans
mcp251x spi0.0: probed
"

I do not understand why is it probed in module and not in static.
Do you have a suggestion ?
I thought that maybe the spi has not finished to be configured but how 
know that ?
Do you think that it is a spi problem and not a MCP251x problem ?

Best regards,

-- 
Mylène JOSSERAND
Navocap