>>
>
> 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?
maybe we need keep that feature default to be disabled.
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)
{
--
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