Luiz Otavio O Souza 71b37cb9ae Fix the mtx_sleep() error checking, catch all errors and not only
EWOULDBLOCK.

Do not print any message at errors.  The errors are properly sent to upper
layers which should be able to deal with it, including printing the errors
when they need to.

The error message was quite annoying while scanning the i2c bus.

MFC after:	1 week
2014-10-20 18:04:20 +00:00
..
2014-10-19 17:55:04 +00:00