Re: Thinkpad A21m oops when go to sleep second time

[Daniel Smolik <marvin-0pWKB23IDFjrBKCeMvbIDA@public.gmane.org>]

Daniel Smolik napsal(a):
> Li, Shaohua napsal(a):
> 
>> Hi,
>>
>>>> [<c020c9be>] uart_suspend_port+0xde/0xf0
>>>
>>>
>>> This is in the serial code. The problem seems to be that not all serial
>>> ports are found on resume. Take a look at the following boot-time dmesg
>>> output:
>>>
>>> [4294670.599000] ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
>>> [4294670.599000] ttyS2 at I/O 0x3e8 (irq = 4) is a 16550A
>>> [4294670.601000] ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
>>>
>>> Note that ttyS0 is found twice. After resume, ttyS0 is still available,
>>> but ttyS2 now gives ENODEV. If the device was held open over suspend,
>>> then the next suspend explodes when it tries to suspend the second
>>> serial device.
>>
>>
>> How about disable pnpacpi?
>>
>> Thanks,
>> Shaohua
>>
> I disable PNP ACPI ,disable detect Serial port via ACPI. Serial port is 
> now detected right but system still oops after second sleep.
I compile 2.6.13-rc3 with ACPI debuging and when I do echo 3 > 
/proc/acpi/sleep second time system freeze an on console I see this.

Stopping tasks:=======================|
osl-961 [35] os_wait_semaphore : Failed to acquire 
semaphore[cbfee4e0|1|0],AE_TIME

		Dan




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