Revert r239178 and implement two new functions, namely

"device_free_softc()" and "device_claim_softc()",
to allow USB serial drivers refcounting the softc.
These functions are used to grab the softc from
auto-free and to free the softc back to the correct
malloc type, respectivly.

Discussed with:	jhb
MFC after:	2 weeks

1 files changed, 0 insertions, 11 deletions

diff --git a/sys/kern/device_if.m b/sys/kern/device_if.m
index edec42b..eb720eb 100644
--- a/sys/kern/device_if.m
+++ b/sys/kern/device_if.m
@@ -316,14 +316,3 @@ METHOD int resume {
 METHOD int quiesce {
 	device_t dev;
 } DEFAULT null_quiesce;
-
-/**
- * @brief Free the device softc
- *
- * @param _dev		device pointer
- * @param _softc	pointer to softc
- */
-METHOD void free_softc {
-	device_t	_dev;
-	void		*_softc;
-} DEFAULT device_free_softc;