CVS commit: src/sys/dev/ic

["Charles M. Hannum" <mycroft%netbsd.org@localhost>]

Module Name:    src
Committed By:   mycroft
Date:           Sun Jul  4 08:09:03 UTC 2004

Modified Files:
        src/sys/dev/ic: com.c

Log Message:
Incorporate 4 changes that have been suggested:
* At high speed, set the FIFO trigger to the maximum value to reduce interrupt
  load.  PR 15448.
* Handler the case of IIR=RXRDY and LSR=!LSR_RCV_MASK differently, to avoid a
  hang with some chips.  PR 21184, and possibly PR 10974 and PR 8248.
* Remove the extra wait at the end of com_common_putc(), after writing a
  character out, so that we get another TXRDY interrupt.  This prevents stalls
  when normal output and kernel output are mixed.  PR 4263.
* Do not "preload" the TX FIFO; wait for a TXRDY interrupt to come in after
  enabling it.


To generate a diff of this commit:
cvs rdiff -r1.227 -r1.228 src/sys/dev/ic/com.c

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