Tai-hwa Liang 60c38bde75 Releasing TX/RX descriptor dmamaps during device detachment instead of ... doing that in bfe_stop(). This should fix a panic recently reported on -current occuring when taking device down then up. In the original implementation, an "ifconfig bfe0 down" triggers bfe_stop(), which also destroys all TX/RX descriptor dmamaps. Hence the subsequent "ifconfig bfe0 up" would force the device to use those already-released dmamap and thus panic the kernel. PR: kern/77804 Submitted by: Frank Mayhar <frank at exit dot com> Reviewed by: dmlb, sam (mentor) Tested by: Phil <pcasidy at casidy dot com>, myself MFC after: 1 week		2005-03-17 13:59:30 +00:00
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if_bfe.c	Releasing TX/RX descriptor dmamaps during device detachment instead of	2005-03-17 13:59:30 +00:00
if_bfereg.h