[#4056] Sometimes irdaping will cause kernel hang up

Submitted By: Vivi Li

Open Date

2008-04-23 07:52:45 Close Date

2009-03-03 02:50:34

Priority:

Very Low Assignee:

Graf Yang

Status:

Closed Fixed In Release:

N/A

Found In Release:

2008R1.5-RC3 Release:

Category:

N/A Board:

N/A

Processor:

BF537 Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Fixed

Uboot version or rev.:

Toolchain version or rev.:

08r1-rc8

App binary format:

N/A

Summary: Sometimes irdaping will cause kernel hang up

Details:

On BF537-STAMP, kernel sometimes hang up after irdaping several times.

Eg: irdaping 100 times from borad A to B and then irdaping from B to A. This hang up usually happens when one of the borad is v1.3.

For those are both v1.1 borad, hang up is not that frequent.

Eg:

on board A which is hang up, we can see before hang up, it send a file to board B.

root:/> modprobe bfin_sir

root:/> irattach irda0 -s &

159

root:/> ircp /bin/busybox

Connecting...done

Sending /bin/busybox...done

Disconnecting...done

root:/>

On board B, it's not hang up and we can see:

Case 4 ...PASS

daddr=0x28132886

irdaping 0x28132886

IrDA ping (0x28132886 on irda0): 32 bytes

32 bytes from 0x28132886: irda_seq=1 time=124.00 ms.

32 bytes from 0x28132886: irda_seq=2 time=104.00 ms.

32 bytes from 0x28132886: irda_seq=4 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=5 time=108.00 ms.

32 bytes from 0x28132886: irda_seq=7 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=8 time=112.00 ms.

32 bytes from 0x28132886: irda_seq=10 time=124.00 ms.

32 bytes from 0x28132886: irda_seq=11 time=104.00 ms.

32 bytes from 0x28132886: irda_seq=13 time=108.00 ms.

32 bytes from 0x28132886: irda_seq=14 time=112.00 ms.

32 bytes from 0x28132886: irda_seq=16 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=17 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=19 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=20 time=124.00 ms.

32 bytes from 0x28132886: irda_seq=22 time=104.00 ms.

32 bytes from 0x28132886: irda_seq=23 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=25 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=26 time=112.00 ms.

32 bytes from 0x28132886: irda_seq=28 time=124.00 ms.

32 bytes from 0x28132886: irda_seq=29 time=104.00 ms.

32 bytes from 0x28132886: irda_seq=31 time=108.00 ms.

32 bytes from 0x28132886: irda_seq=32 time=112.00 ms.

32 bytes from 0x28132886: irda_seq=34 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=35 time=120.00 ms.

32 bytes from 0x28132886: irda_seq=37 time=120.00 ms.

32 bytes from 0x28132886: irda_seq=38 time=108.00 ms.

32 bytes from 0x28132886: irda_seq=40 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=41 time=108.00 ms.

32 bytes from 0x28132886: irda_seq=43 time=120.00 ms.

32 bytes from 0x28132886: irda_seq=44 time=112.00 ms.

32 bytes from 0x28132886: irda_seq=46 time=112.00 ms.

32 bytes from 0x28132886: irda_seq=47 time=112.00 ms.

32 bytes from 0x28132886: irda_seq=49 time=108.00 ms.

32 bytes from 0x28132886: irda_seq=50 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=52 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=53 time=124.00 ms.

32 bytes from 0x28132886: irda_seq=55 time=104.00 ms.

32 bytes from 0x28132886: irda_seq=56 time=104.00 ms.

32 bytes from 0x28132886: irda_seq=58 time=120.00 ms.

32 bytes from 0x28132886: irda_seq=59 time=112.00 ms.

32 bytes from 0x28132886: irda_seq=61 time=112.00 ms.

32 bytes from 0x28132886: irda_seq=62 time=104.00 ms.

32 bytes from 0x28132886: irda_seq=64 time=108.00 ms.

32 bytes from 0x28132886: irda_seq=65 time=112.00 ms.

32 bytes from 0x28132886: irda_seq=67 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=68 time=120.00 ms.

32 bytes from 0x28132886: irda_seq=70 time=120.00 ms.

32 bytes from 0x28132886: irda_seq=71 time=108.00 ms.

32 bytes from 0x28132886: irda_seq=73 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=74 time=112.00 ms.

32 bytes from 0x28132886: irda_seq=76 time=120.00 ms.

32 bytes from 0x28132886: irda_seq=77 time=120.00 ms.

32 bytes from 0x28132886: irda_seq=79 time=116.00 ms.

32 bytes from 0x28132886: irda_seq=80 time=104.00 ms.

Follow-ups

--- Graf Yang 2008-08-05 00:06:54

This issue existed when three irda devices connected together. Put the priority

to low.

--- Robin Getz 2008-08-05 15:16:01

Graf:

How do we know that this is an issue that can be pushed off until we understand

it better?

If you can't recreate the issue with 3 non-Blackfin devices - then it is

something in our driver which needs to be fixed - isn't it?

-Robin

--- Graf Yang 2008-08-22 08:31:48

I recreate this issue, when connected one blackfin and two none blackfin.

The driver do have some problem. The root cause is IR module not respond to

incoming data (no interrupt come).

Now have fixed driver issue. I need investigate why IR module not respond to

the incoming data.

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