linux-kernel - RE: [git patches] libata fixes

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Date:	Sun, 11 Mar 2007 20:20:31 +0100
From:	"Paul Rolland" <rol@...917.net>
To:	<rol@...917.net>,
	"'Linus Torvalds'" <torvalds@...ux-foundation.org>
Cc:	"'Tejun Heo'" <htejun@...il.com>,
	"'Jeff Garzik'" <jeff@...zik.org>,
	"'Andrew Morton'" <akpm@...ux-foundation.org>,
	<linux-ide@...r.kernel.org>,
	"'LKML'" <linux-kernel@...r.kernel.org>,
	"'Eric D. Mudama'" <edmudama@...il.com>
Subject: RE: [git patches] libata fixes

Just one point that may be interesting, as it seems that this is IRQ
related : at the beginning of the dmesg, it seems that IRQ16 is used
for sky2/Yukon , but when reading /proc/interrupts, it has been remapped
to IRQ 505... Could this also affect libata ?

Regards,
Paul

Paul Rolland, rol(at)as2917.net
ex-AS2917 Network administrator and Peering Coordinator

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> -----Original Message-----
> From: linux-kernel-owner@...r.kernel.org 
> [mailto:linux-kernel-owner@...r.kernel.org] On Behalf Of Paul Rolland
> Sent: Sunday, March 11, 2007 7:35 PM
> To: 'Linus Torvalds'
> Cc: 'Tejun Heo'; 'Jeff Garzik'; 'Andrew Morton'; 
> linux-ide@...r.kernel.org; 'LKML'; 'Eric D. Mudama'
> Subject: RE: [git patches] libata fixes
> 
> Hello,
> 
> >  do I understand correctly that the *only* difference between 
> > the working 
> > setup is that you applied (by hand) the libata patch that 
> > Jeff sent out?
> > 
> > So plain 2.6.21-rc2 works fine, but with the patch applied, 
> > you get no 
> > interrupts on the DVD drive?
> 
> Nope... I tried several patches from Tejun, and also some 
> that Jeff posted
> to linux-ide, but no luck. The only way to have this DVD-RW 
> working is to
> use irqpoll on the command line...
> 
> Sorry to have been unclear....
> 
> To complete, here are some more output from the machine : 
>  - a dmesg without irqpoll,
>  - a dmesg with irqpoll,
>  - a copy of /proc/interrupts
> 6 [19:33] rol@...i:~> cat /proc/interrupts 
>            CPU0       CPU1       
>   0:     357022          0   IO-APIC-edge      timer
>   1:          8          0   IO-APIC-edge      i8042
>   4:         14          0   IO-APIC-edge      serial
>   6:          5          0   IO-APIC-edge      floppy
>   8:          1          0   IO-APIC-edge      rtc
>   9:          0          0   IO-APIC-fasteoi   acpi
>  12:        129          0   IO-APIC-edge      i8042
>  14:       7639          0   IO-APIC-edge      libata
>  15:          0          0   IO-APIC-edge      libata
>  16:          0          0   IO-APIC-fasteoi   libata
>  17:          0          0   IO-APIC-fasteoi   uhci_hcd:usb3
>  18:          0          0   IO-APIC-fasteoi   uhci_hcd:usb4
>  19:        204          0   IO-APIC-fasteoi   uhci_hcd:usb5, 
> HDA Intel
>  20:        107          0   IO-APIC-fasteoi   ehci_hcd:usb1, 
> uhci_hcd:usb2
>  21:          3          0   IO-APIC-fasteoi   ohci1394
> 504:       8243          0   PCI-MSI-edge      libata
> 505:          1          0   PCI-MSI-edge      eth1
> 506:        386          0   PCI-MSI-edge      eth0
> NMI:        771        531 
> LOC:     569318     578684 
> ERR:          0
> 
> Regards,
> Paul
> 

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