[microblaze-uclinux] ttyS1 hangup..

[Prasad <ndprasad@xxxxxxxxx>]

Hi all,
I am having a wierd problem. I am running ntpd which uses ttyS1 to
talk to another board. Once in a while when ntpd quits, i find the
ntpd process not getting killed fully. When i do a "ps" i see the
"113      R      0K     0K  0.0 ntpd" .

After that i couldn't open the ttyS1 again as i get "open:
Input/output error" . I couldn't kill the process either.

When i see the /proc/113/fd it doesn't show anything under it. Also,
/proc/status shows the following.

===========================
# cat status
Name:   ntpd
State:  R (running)
Tgid:   113
Pid:    113
PPid:   1
TracerPid:      0
Uid:    0       0       0       0
Gid:    0       0       0       0
FDSize: 0
Groups:
SigPnd: 0000000000000010
SigBlk: 1fb932c500000000
SigIgn: 0000000000001000
SigCgt: 0000000000006a47
CapInh: 0000000000000000
CapPrm: 00000000fffffeff
CapEff: 00000000fffffeff
======================================
# cat stat
113 (ntpd) R 1 0 0 0 -1 1284 0 0 0 0 1340 56 0 0 9 0 0 100 2593 0 0
4294967295 0 0 0 0 0 272 0 4096 27207 0 0 0 17 0
=========================================
# cat statm
0 0 0 0 0 0 0
=========================================


Please let me know what kinda problem potentially can cause this.
Appreciate your response.

Thanx
- Prasad
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