CVS commit: src/sys/dev/i2c

[Paul Goyette <pgoyette%netbsd.org@localhost>]

Module Name:    src
Committed By:   pgoyette
Date:           Mon Feb  9 20:27:21 UTC 2009

Modified Files:
        src/sys/dev/i2c: dbcool.c

Log Message:
Previous check for ADM1027 caused a kernel panic, since the read routine
can be called _before_ we've identified the chip.  Ensure that sc_chip
is initialized to NULL before chip is identified, and if it is NULL or
ADM1027, use the less-efficient send_byte/receive_byte.

While here, don't attempt to release the i2c bus if we failed to acquire
it.  This would cause a panic on a LOCKDEBUG kernel.

Thanks to Nicholas Joly for pointing out both of these bugs.


To generate a diff of this commit:
cvs rdiff -r1.10 -r1.11 src/sys/dev/i2c/dbcool.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.