Patch-ID# 100358-01
Keywords: dialin dialout drops DTR
Synopsis: SUnOS 4.1.1: unable to dialin DTR dropped
Date:26/July/91

SunOS release: 4.1.1

Topic: DTR dropped and unable to close on dialin/dialout lines

BugID's fixed with this patch: 1060689

Architectures for which this patch is available: sun4 sun4c sun3 sun3x

Patches which may conflict with this patch: 100084, 100020, 100095 100188 ,100187 100194,                                             100200, 100255, 100315, 100358

Obsoleted by:

Problem description:

	When a port is used for dialing in and dialing out
	DTR could be dropped and processes remain in <exiting>
	state with data queued for the driver.

Fix description:

	The fix includes patched version of:

                zs_async.o
		mcp_async.o

INSTALL:


# mv /sys/sun{4,4c,3,3x}/OBJ/zs_async.o  /sys/sun{4,4c,3,3x}/OBJ/zs_async.o.FCS
# mv /sys/sun{4,4c,3,3x}/OBJ/ /sys/sun{4,4c,3,3x}/OBJ/mcp_async.o mcp_async.o.FCS
  cp sun{4,4c,3,3x}/zs_async.o /sys/sun{4,4c,3,3x}/OBJ/zs_async.o
  cp sun{4,4c,3,3x}/mcp_async.o /sys/sun{4,4c,3,3x}/OBJ/mcp_async.o
  chmod 444 /sys/sun{4,4c,3,3x}/OBJ/zs_async.o
  chmod /sys/sun{4,4c,3,3x}/OBJ/444 mcp_async.o
 
   Then a new kernel will need to be made

Please refer to the System and Network Administration Manual for details
on how to configure and install a custom kernel.