Kenji Kaneshige wrote:
> Yinghai Lu wrote:
>>> Bad news...
>>>
>>> My system doesn't boot (hangup) with your latest set of patches.
>>> Fusion MPT SAS driver initialization failed on some devices.
>>> Please see below
>>>
>>> ...
>>> Fusion MPT SAS Host driver 3.04.12
>>> mptsas 0000:09:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
>>> mptsas 0000:09:00.0: BAR 1: can't reserve [mem 0x00510000-0x00513fff
>>> 64bit]
>>> mptbase: ioc0: ERROR - pci_request_selected_regions() with MEM failed
>>> mptsas 0000:0a:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
>>> mptsas 0000:0a:00.0: BAR 1: can't reserve [mem 0x00610000-0x00613fff
>>> 64bit]
>>> mptbase: ioc1: ERROR - pci_request_selected_regions() with MEM failed
>>> ...
>>>
>>>
>>> This problem disappear when I revert the patch 6/9, and my system
>>> can boot. But I found igb driver initialization failed on some
>>> devices even in this case. Please see below
>>>
>>> ...
>>> igb 0000:08:00.0: BAR 0: can't reserve [mem 0x00100000-0x0011ffff]
>>> igb 0000:08:00.0: PCI INT A disabled
>>> igb: probe of 0000:08:00.0 failed with error -16
>>> igb 0000:08:00.1: PCI INT B -> GSI 18 (level, low) -> IRQ 18
>>> igb 0000:08:00.1: BAR 0: can't reserve [mem 0x00140000-0x0015ffff]
>>> igb 0000:08:00.1: PCI INT B disabled
>>> igb: probe of 0000:08:00.1 failed with error -16
>>> ...
>>
>> that looks werid, without patch 6/9 should only have pci bridge res
>> shrink problem with your last test?
>>
>
> I don't know why. I might have overlooked it at the previous
> test.
>
>> maybe we need keep that feature default to be disabled.
>
> Will do it next week.
>
> Thanks,
> Kenji Kaneshige
>
>
>>
>> please try
>>
>> ---
>> drivers/pci/setup-bus.c | 3 +--
>> 1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> Index: linux-2.6/drivers/pci/setup-bus.c
>> ===================================================================
>> --- linux-2.6.orig/drivers/pci/setup-bus.c
>> +++ linux-2.6/drivers/pci/setup-bus.c
>> @@ -918,8 +918,7 @@ static void pci_bus_dump_resources(struc
>> * second try will clear small leaf bridge res
>> * third try will clear related bridge: some aggressive
>> */
>> -/* assume we only have 4 level bridges, so only try 5 times */
>> -int pci_try_num = 5;
>> +int pci_try_num = 1;
>> void __init
>> pci_assign_unassigned_resources(void)
>> {
>>
>>
>
don't try it. found the cause.
even change pci_try_num = 1 will not help.
...
will have another patch.
Thanks
Yinghai
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