Guys:
I'm running a slightly-modified version of Matthieu's 2.6.27 kernel,
along with spidev. Immediately after booting, when I do this:
# echo 1 > /dev/spidev1.1
The system hangs in an infinite:
SSP overrun
SSP overrun
...
I took a look at the code, and the message is coming from ssp_int() in
spi_ep93xx.c. I added code to printk the value of SSPIxR, and it is
indeed SSP_SSPIxx_RORIS that's causing the interrupt.
I'm having trouble figuring out the root cause of this problem. It's
particularly odd that I'm not attempting to receive anything, and that
the system exhibits a hang even if I don't register the ssp_int()
handler. I don't have any hardware connected to the SPI bus right now.
The system seems to do the same thing even if I read from /dev/spidev1.1
before writing to it.
Any suggestions? Thanks!
b.g.
--
Bill Gatliff
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