Scott Long 2eea70515c Overhaul error handling in the IPS driver. Don't use a magic value for
driver-induced errors, instead be better about propagating error status
upwards.  Add more error definitions, courtesy of the linux driver.  Fix
a command leak in the ioctl handler.  Re-arrange some of the command handlers
to localize error handling.

MFC After: 3 days
2005-09-25 17:12:41 +00:00
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