Re: Intel ICH9M bug : sata unusable with usbserial

[Mark Lord <kernel-R6A+fiHC8nRWk0Htik3J/w@public.gmane.org>]

On 11-03-01 10:00 AM, Philippe De Muyter wrote:
> On Tue, Mar 01, 2011 at 09:16:27AM -0500, Greg KH wrote:
>> On Tue, Mar 01, 2011 at 01:34:52PM +0100, Philippe De Muyter wrote:
>>> previously we had all but one usb interrupts on the same line as ata_piix :
>>>   5:      17183    XT-PIC-XT-PIC    ata_piix, ata_piix, ehci_hcd:usb1, ehci_hcd:usb2, uhci_hcd:usb3, uhci_hcd:usb5, uhci_hcd:usb6, uhci_hcd:usb7, uhci_hcd:usb8
>>> while now they are spread on different lines : 16, 18, 19, 21 and 22
>>>
>>> So I wonder if there is still a bug, but that it is not triggered anymore.
>>>
>>> Is there a way to tell which interrupt line the USB GPS receiver is connected
>>> to ?
>>
>> See which USB bus the device is on, using lsusb.  It should match up
>> with the usbX number in the above list.
> 
> Given that I get :
> 
>   tmp199:~ # lsusb
>   ...
>   Bus 007 Device 002: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
>   tmp199:~ # cat /proc/interrupts
> 	     CPU0       CPU1
>   ...
>    19:     996143     995511   IO-APIC-fasteoi   ata_piix, ata_piix, uhci_hcd:usb5, uhci_hcd:usb7
>   tmp199:~ #
> 
> my USB GPS receiver and my sata disk still share the same interrupt, I assume ?
> 
> What's changed now is that this interrupt line is now IO-APIC-fasteoi instead
> of XT-PIC-XT-PIC.  Maybe there's something to look at there ?
> 
>>
>> Glad enabling APIC in your BIOS fixed this.
> 
> I am glad too :)

Nothing got "fixed" by doing that.
Swept under the rug, yes.

But the bug is still there.

Cheers
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