Hi: Please use linefeeds. Please start a new thread when appropriate. * MK GU <mkgu_2005 at yahoo.ca> [2005-12-15 12:38:18 -0500]: > I am using the i2c-i801 bus driver for our own device driver. In my > project, the SMB Alert signal is used to generate an interrupt (IRQ 11 > for our ICH6 SMBus controller on my host). I call the function > i2c_smbus_xfer() to do data transfers. I got error messages and my > kernel hangs when this function is called in a tasklet handler function > set by my interrupt handler. But there is no problem when calling this > function outside the interrupt handler and its tasklet handler. Further > debug messages show that the error messages occured during the call to > function msleep(1) in i801_block_transaction(). Part of the error > messages is shown below: > [...] Yeah, that's by design. The function i2c_smbus_xfer() can sleep, which is not allowed in a tasklet. Use a workqueue instead. Regards, -- Mark M. Hoffman mhoffman at lightlink.com
