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From: "John W. Linville" <linville@tuxdriver.com>
To: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Russell King <rmk+lkml@arm.linux.org.uk>,
	Grant Grundler <grundler@parisc-linux.org>,
	Matthew Wilcox <matthew@wil.cx>,
	linux-pci@atrey.karlin.mff.cuni.cz,
	linux-pm <linux-pm@lists.osdl.org>,
	linux-kernel@vger.kernel.org
Subject: Re: [patch 2.6.12 (repost w/ corrected subject)] pci: restore BAR values in pci_enable_device_bars
Date: Thu, 7 Jul 2005 20:57:04 -0400	[thread overview]
Message-ID: <20050708005701.GA13384@tuxdriver.com> (raw)
In-Reply-To: <20050706033454.A706@den.park.msu.ru>

[-- Attachment #1: Type: text/plain, Size: 1140 bytes --]

On Wed, Jul 06, 2005 at 03:34:54AM +0400, Ivan Kokshaysky wrote:
> On Tue, Jul 05, 2005 at 10:46:20PM +0100, Russell King wrote:

> > Rather than reimplementing the internals of pci_update_resource() it
> > may be worth splitting the common stuff out so it gets fixed for both
> > pci_update_resource() and pci_enable_device().
> 
> Just use pci_update_resource().
 
Problem: pci_update_resource doesn't exist for sparc64.

> John, I'd also suggest following changes to the patch:
> - move the code to pci_set_power_state(), where it belongs to;
> - explicitly check for D3hot->D0 transition *and* for the
>   No_Soft_Reset bit, to avoid unnecessary config space accesses;
> - add a quote from PCI spec (as a comment) explaining why is it needed.

I have reformulated the patch to account for these comments, but I am
not currently using pci_update_resource for the reason stated above.
I'll go ahead and post the new patch for comment.  If we can resolve
the pci_update_resource issue, I'll post another (either alternative
or additional) patch to cover that.  Patch to follow...

Thanks!

John
-- 
John W. Linville
linville@tuxdriver.com

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WARNING: multiple messages have this Message-ID (diff)
From: "John W. Linville" <linville@tuxdriver.com>
To: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Russell King <rmk+lkml@arm.linux.org.uk>,
	Matthew Wilcox <matthew@wil.cx>,
	Grant Grundler <grundler@parisc-linux.org>,
	linux-pci@atrey.karlin.mff.cuni.cz,
	linux-pm <linux-pm@lists.osdl.org>,
	linux-kernel@vger.kernel.org, Greg KH <greg@kroah.com>,
	Adam Belay <ambx1@neo.rr.com>
Subject: Re: [patch 2.6.12 (repost w/ corrected subject)] pci: restore BAR values in pci_enable_device_bars
Date: Thu, 7 Jul 2005 20:57:04 -0400	[thread overview]
Message-ID: <20050708005701.GA13384@tuxdriver.com> (raw)
In-Reply-To: <20050706033454.A706@den.park.msu.ru>

On Wed, Jul 06, 2005 at 03:34:54AM +0400, Ivan Kokshaysky wrote:
> On Tue, Jul 05, 2005 at 10:46:20PM +0100, Russell King wrote:

> > Rather than reimplementing the internals of pci_update_resource() it
> > may be worth splitting the common stuff out so it gets fixed for both
> > pci_update_resource() and pci_enable_device().
> 
> Just use pci_update_resource().
 
Problem: pci_update_resource doesn't exist for sparc64.

> John, I'd also suggest following changes to the patch:
> - move the code to pci_set_power_state(), where it belongs to;
> - explicitly check for D3hot->D0 transition *and* for the
>   No_Soft_Reset bit, to avoid unnecessary config space accesses;
> - add a quote from PCI spec (as a comment) explaining why is it needed.

I have reformulated the patch to account for these comments, but I am
not currently using pci_update_resource for the reason stated above.
I'll go ahead and post the new patch for comment.  If we can resolve
the pci_update_resource issue, I'll post another (either alternative
or additional) patch to cover that.  Patch to follow...

Thanks!

John
-- 
John W. Linville
linville@tuxdriver.com

  parent reply	other threads:[~2005-07-08  0:57 UTC|newest]

Thread overview: 90+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-06-23 19:14 [RFC] firmware leaves device in D3hot at boot John W. Linville
2005-06-23 19:14 ` John W. Linville
2005-06-24  2:28 ` John W. Linville
2005-06-24  2:28   ` John W. Linville
2005-06-30 17:10   ` Greg KH
2005-06-30 17:10     ` Greg KH
2005-07-01  1:41     ` John W. Linville
2005-07-01  1:41       ` John W. Linville
2005-07-01  2:26       ` [patch 2.6.12 (repost w/ corrected subject)] pci: restore BAR values in pci_enable_device_bars John W. Linville
2005-07-01  2:26         ` John W. Linville
2005-07-02  7:29         ` Grant Grundler
2005-07-02  7:29           ` Grant Grundler
2005-07-02  8:09           ` Russell King
2005-07-02  8:09             ` Russell King
2005-07-05 20:05             ` Matthew Wilcox
2005-07-05 20:05               ` Matthew Wilcox
2005-07-05 21:46               ` Russell King
2005-07-05 21:46                 ` Russell King
2005-07-05 23:34                 ` Ivan Kokshaysky
2005-07-05 23:34                   ` Ivan Kokshaysky
2005-07-06  7:46                   ` Russell King
2005-07-06  7:46                     ` Russell King
2005-07-08  0:57                   ` John W. Linville [this message]
2005-07-08  0:57                     ` John W. Linville
2005-07-08  0:59                     ` [patch 2.6.13-rc2] pci: restore BAR values in pci_set_power_state for D3hot->D0 John W. Linville
2005-07-08  0:59                       ` John W. Linville
2005-07-08  3:43                       ` [linux-pm] " david-b
2005-07-08  3:43                         ` david-b
2005-07-08 12:37                         ` John W. Linville
2005-07-08 12:37                           ` [linux-pm] " John W. Linville
2005-07-08  3:11                     ` [patch 2.6.12 (repost w/ corrected subject)] pci: restore BAR values in pci_enable_device_bars David S. Miller
2005-07-08  3:11                       ` David S. Miller
2005-07-08  5:51                       ` Ivan Kokshaysky
2005-07-08  5:51                         ` Ivan Kokshaysky
2005-07-08  6:35                         ` David S. Miller
2005-07-08  6:35                           ` David S. Miller
2005-07-08  7:03                           ` Ivan Kokshaysky
2005-07-08  7:03                             ` Ivan Kokshaysky
2005-07-08  7:33                             ` David S. Miller
2005-07-08  7:33                               ` David S. Miller
2005-07-08  8:20                               ` Ivan Kokshaysky
2005-07-08  8:20                                 ` Ivan Kokshaysky
2005-07-08 18:34                                 ` [patch 2.6.13-rc2] pci: restore BAR values from pci_set_power_state for D3hot->D0 John W. Linville
2005-07-08 18:34                                   ` John W. Linville
2005-07-08 19:08                                   ` David S. Miller
2005-07-08 19:08                                     ` David S. Miller
2005-07-10 17:53                                   ` Ivan Kokshaysky
2005-07-10 17:53                                     ` Ivan Kokshaysky
2005-07-11 12:48                                   ` Lennert Buytenhek
2005-07-11 12:48                                     ` Lennert Buytenhek
2005-07-11 13:15                                     ` John W. Linville
2005-07-11 13:15                                       ` John W. Linville
2005-07-11 13:19                                       ` [patch 2.6.13-rc2] PCI: Add symbol exports for pci_restore_bars John W. Linville
2005-07-11 13:19                                         ` John W. Linville
2005-07-11 17:18                                         ` Greg KH
2005-07-11 17:36                                           ` John W. Linville
2005-07-11 17:36                                             ` John W. Linville
2005-07-11 17:38                                             ` [patch 2.6.13-rc2] PCI: Add GPL symbol export " John W. Linville
2005-07-11 17:38                                               ` John W. Linville
2005-07-12  2:28                                   ` [patch 2.6.13-rc2] pci: restore BAR values from pci_set_power_state for D3hot->D0 Adam Belay
2005-07-12  2:28                                     ` Adam Belay
2005-07-13 17:34                                     ` John W. Linville
2005-07-13 17:34                                       ` John W. Linville
2005-07-26 23:49                                   ` Greg KH
2005-07-26 23:49                                     ` Greg KH
2005-07-27  1:36                                     ` John W. Linville
2005-07-27  1:36                                       ` John W. Linville
2005-07-27 14:12                                       ` John W. Linville
2005-07-27 14:12                                         ` John W. Linville
2005-07-27 14:19                                         ` [patch 2.6.13-rc3] pci: restore BAR values after D3hot->D0 for devices that need it John W. Linville
2005-07-27 14:19                                           ` John W. Linville
2005-07-31 19:36                                           ` Ralf Baechle
2005-07-31 19:36                                             ` Ralf Baechle
2005-08-02 17:31                                             ` Greg KH
2005-08-02 17:31                                               ` Greg KH
2005-08-02 16:41                                           ` Jesse Brandeburg
2005-09-14 13:52                                           ` [patch 2.6.14-rc1] pci: only call pci_restore_bars at boot John W. Linville
2005-09-14 13:52                                             ` John W. Linville
2005-09-14 15:08                                             ` Jeff Garzik
2005-09-14 15:08                                               ` Jeff Garzik
2005-09-14 16:26                                               ` David S. Miller
2005-09-14 16:47                                                 ` John W. Linville
2005-09-14 16:47                                                   ` John W. Linville
2005-09-14 18:22                                                 ` Ivan Kokshaysky
2005-09-14 18:22                                                   ` Ivan Kokshaysky
2005-07-05 17:46           ` [patch 2.6.12 (repost w/ corrected subject)] pci: restore BAR values in pci_enable_device_bars John W. Linville
2005-07-05 17:46             ` John W. Linville
2005-07-18 12:17             ` Grant Grundler
2005-07-01  2:26       ` [patch 2.6.12] pci: restore BAR values in pci_enable_device John W. Linville
2005-07-01  2:26         ` John W. Linville

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