Module Name:	syssrc
Committed By:	thorpej
Date:		Thu Jun 29 16:53:49 UTC 2000

Modified Files:
	syssrc/sys/dev/ic: i82557.c

Log Message:
Since the RFA is allocated in a normal mbuf, as opposed to DMA-safe
memory that is explicitly mapped in a DMA-coherent manner, we must
make sure to PREREAD sync the RFA after noticing a clear "complete"
bit.  Without this, the clear bit will linger in the cache, and the
CPU will not notice when the chip updates the bit via DMA later.

From Izumi Tsutsui on port-arm32@netbsd.org.


To generate a diff of this commit:
cvs rdiff -r1.35 -r1.36 syssrc/sys/dev/ic/i82557.c

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