ow_temp: drop the lock around a call that can sleep

[avg]

Summary

This is similar to what is done around other calls that lead to
own_command_wait() that can sleep.

[imp]

I'd move the lock to after the if that might do a printf.
Otherwise, this is the right thing to do. We use temp_lock to protect sc->flags only, so this drop doesn't affect that.
In fact, we can go much further than this as noted.
The locking wasn't really attended to when I wrote this driver and I used old-school patterns.

sys/dev/ow/ow_temp.c

148

I'd move this down 2 lines.

151

I'd put the lock just before this while() statement.

159

We can move this lock up to before the for loop.

161

and then delete this line.

185

And pick up the lock just before calling msleep.