From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: linux-ide@vger.kernel.org, Olaf Hering <olaf@aepfle.de>,
Alan <alan@lxorguk.ukuu.org.uk>,
linuxppc-dev@ozlabs.org
Subject: Re: pata_sl82c105 can not reserve IO region
Date: Sat, 02 Dec 2006 08:53:49 +1100 [thread overview]
Message-ID: <1165010029.22108.10.camel@localhost.localdomain> (raw)
In-Reply-To: <45707CF8.3090106@ru.mvista.com>
On Fri, 2006-12-01 at 22:05 +0300, Sergei Shtylyov wrote:
> Olaf Hering wrote:
>
> >>The printk in pci_request_region has 'bar + 1', so 6 should be possible
> >>if i becomes 5.
>
> > Does the IO region of the last bar look correct?
I think BAR 5 is unassigned by the firmware, though when OF does that,
it often means that an OF driver for that chip decided that the BAR
wasn't useful.
In fact, the driver doesn't actually use that BAR 5... Only 0 to 4
afaik.
I think the libata code shouldn't request the BARs it doesn't need or
that problem will hit us in other circumstances. It should only request
0 to 4 and let the drivers request 5 themselves if they need it.
Ben.
next prev parent reply other threads:[~2006-12-01 21:54 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-30 16:52 pata_sl82c105 can not reserve IO region Olaf Hering
2006-11-30 17:10 ` Alan
2006-11-30 18:47 ` Olaf Hering
2006-12-01 18:34 ` Olaf Hering
2006-12-01 18:58 ` Alan
2006-12-01 19:05 ` Sergei Shtylyov
2006-12-01 21:53 ` Benjamin Herrenschmidt [this message]
2006-12-01 22:15 ` Alan
2006-12-01 22:19 ` Benjamin Herrenschmidt
2006-12-02 14:36 ` U-Boot allocating PCI I/O space from 0 (Was: pata_sl82c105 can not reserve IO region) Sergei Shtylyov
2006-12-02 16:33 ` Sergei Shtylyov
2006-12-26 20:53 ` [U-Boot-Users] " Sergei Shtylyov
2006-12-03 23:39 ` pata_sl82c105 can not reserve IO region Alan
2006-12-03 17:12 ` Olaf Hering
2006-12-03 22:24 ` Olaf Hering
2006-12-03 23:23 ` Alan
2006-12-04 0:30 ` Olaf Hering
2006-12-04 9:21 ` Olaf Hering
2006-12-03 23:07 ` Alan
2006-12-04 12:38 ` [PATCH] mark PCI resource with start 0 as unassigned Olaf Hering
2006-12-04 12:44 ` Segher Boessenkool
2006-12-04 12:50 ` Sergei Shtylyov
2006-12-04 12:54 ` Segher Boessenkool
2006-12-04 13:08 ` Sergei Shtylyov
2006-12-04 13:21 ` Alan
2006-12-04 13:25 ` Segher Boessenkool
2006-12-04 14:15 ` Alan
2007-08-01 14:22 ` Sergei Shtylyov
2007-08-01 15:51 ` Alan Cox
2007-08-06 18:04 ` Segher Boessenkool
2007-08-06 19:52 ` Alan Cox
2007-08-06 22:14 ` Benjamin Herrenschmidt
2006-12-04 13:27 ` Sergei Shtylyov
2006-12-04 14:22 ` What is the correct way to indicate an unassigned PCI resource ? Alan
2006-12-04 14:34 ` Sergei Shtylyov
2006-12-04 14:44 ` Alan
2006-12-04 15:40 ` Sergei Shtylyov
2006-12-04 15:55 ` Sergei Shtylyov
2006-12-04 20:53 ` Guennadi Liakhovetski
2006-12-05 4:43 ` Benjamin Herrenschmidt
2006-12-05 4:41 ` Benjamin Herrenschmidt
2006-12-05 8:15 ` Olaf Hering
2006-12-05 20:19 ` Benjamin Herrenschmidt
2006-12-05 21:26 ` Sergei Shtylyov
2007-01-04 17:49 ` Olaf Hering
2007-01-04 21:30 ` Benjamin Herrenschmidt
2007-01-05 10:26 ` Olaf Hering
2007-01-05 12:05 ` Benjamin Herrenschmidt
2006-12-05 10:51 ` Gabriel Paubert
2006-12-05 12:38 ` Sergei Shtylyov
2006-12-05 17:37 ` Grant Grundler
2006-12-05 19:22 ` Sergei Shtylyov
2006-12-04 12:56 ` [PATCH] mark PCI resource with start 0 as unassigned Olaf Hering
2006-12-04 13:05 ` Segher Boessenkool
2006-12-04 12:47 ` Sergei Shtylyov
2006-12-04 12:40 ` [PATCH] add delay around sl82c105_reset_engine calls Olaf Hering
2006-12-04 13:02 ` Alan
2006-12-04 13:12 ` Olaf Hering
2007-01-04 6:42 ` Olaf Hering
2007-01-04 10:53 ` Alan
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