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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Dave Martin <dave.martin@linaro.org>,
	Nicolas Pitre <nicolas.pitre@linaro.org>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Anton Vorontsov <cbouatmailru@gmail.com>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	Andrew Morton <akpm@linux-foundation.org>,
	devicetree-discuss@lists.ozlabs.org,
	LKML <linux-kernel@vger.kernel.org>,
	linux-ide@vger.kernel.org, Randy Dunlap <rdunlap@xenotime.net>,
	linux-next@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
	Jeff Garzik <jgarzik@redhat.com>, Pawel Moll <pawel.moll@arm.com>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] ata: Don't use NO_IRQ in pata_of_platform driver
Date: Tue, 6 Dec 2011 12:11:31 +0000	[thread overview]
Message-ID: <20111206121131.3446266c@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <20111206112545.GQ14542@n2100.arm.linux.org.uk>

> However, I have suggested in the past that new platforms _should_ avoid
> not just IRQ0 but IRQ0-15 (for a completely different reason to that of
> 'IRQ0 means no IRQ'.)  But such comments just get ignored, so I just
> don't see the point in doing anything about this.  If people experience
> breakage, so be it.  I too will have little sympathy but not for the same
> reason.

The one I can think of that is capable of taking EISA/ISA cards but has
differently IRQ plumbing arrangements is PA-RISC, and they do exactly
this.

Beyond that it probably doesn't come up except in the weird world of PCI
legacy compatibility for legacy IDE and VGA vertical interrupt routing.
In those cases we fix up the PCI config space so the platform in turn can
do proper IRQ plumbing.

Alan

  reply	other threads:[~2011-12-06 12:11 UTC|newest]

Thread overview: 80+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-10-11  9:11 linux-next: Tree for Oct 11 Stephen Rothwell
2011-10-11 18:26 ` [PATCH -next] x86: perf_event_intel.c needs export.h Randy Dunlap
2011-10-11 18:49 ` linux-next: Tree for Oct 11 (mmc) Randy Dunlap
2011-10-11 19:31   ` mmc core broken dependency on CONFIG_BLOCK (Was: linux-next: Tree for Oct 11 (mmc)) Andrei Warkentin
2011-10-11 21:59     ` Randy Dunlap
2011-10-11 23:20       ` NamJae Jeon
2011-10-11 23:48         ` Andrei Warkentin
2011-10-12  0:16           ` NamJae Jeon
2011-10-12  0:50             ` Andrei Warkentin
2011-10-12  1:55               ` NamJae Jeon
2011-10-11 19:15 ` [PATCH -next] jbd2: fix build when CONFIG_BUG is not enabled Randy Dunlap
2011-10-27  8:06   ` Ted Ts'o
2011-10-11 19:26 ` linux-next: Tree for Oct 11 (mfd/intel_msic.c) Randy Dunlap
2011-10-11 19:32 ` linux-next: Tree for Oct 11 (gpio regulator) Randy Dunlap
2011-10-11 20:22   ` Heiko Stübner
2011-10-11 20:37 ` linux-next: Tree for Oct 11 (ata/pata_of_platform.c) Randy Dunlap
2011-10-14 17:58   ` Randy Dunlap
2011-11-10 13:57     ` Ingo Molnar
2011-11-10 14:25       ` Alan Cox
2011-11-10 15:18       ` [PATCH] ata: Fix build error in pata_of_platform (NO_IRQ usage) Anton Vorontsov
2011-11-10 15:25         ` [PATCH 1/2] of/irq: Get rid of NO_IRQ usage Anton Vorontsov
2011-12-06 21:22           ` Rob Herring
2011-12-06 21:25             ` Linus Torvalds
2011-12-06 23:16               ` [PATCH v3] " Anton Vorontsov
2011-12-07  3:51                 ` Rob Herring
     [not found]                 ` <20111206231626.GA31683-wnGakbxT3iijyJ0x5qLZdcN33GVbZNy3@public.gmane.org>
2011-12-07  9:52                   ` Wolfram Sang
2011-11-10 15:26         ` [PATCH 2/2] ata: Don't use NO_IRQ in pata_of_platform driver Anton Vorontsov
2011-11-10 15:38           ` Alan Cox
2011-11-10 16:28             ` [PATCH] " Anton Vorontsov
2011-11-10 20:34               ` Jeff Garzik
2011-12-02 19:19               ` Dave Martin
2011-12-02 22:34                 ` Anton Vorontsov
2011-12-02 22:40                   ` Anton Vorontsov
2011-12-02 22:46                     ` Anton Vorontsov
2011-12-02 22:40                   ` Linus Torvalds
2011-12-02 23:18                     ` [PATCH v2] of/irq: Get rid of NO_IRQ usage Anton Vorontsov
2011-12-02 23:22                 ` [PATCH] ata: Don't use NO_IRQ in pata_of_platform driver Alan Cox
2011-12-03 18:56                   ` Geert Uytterhoeven
2011-12-02 19:26               ` Dave Martin
2011-12-02 19:28                 ` Linus Torvalds
2011-12-02 23:12                   ` Benjamin Herrenschmidt
2011-12-05 16:11                     ` Dave Martin
2011-12-05 17:40                       ` Nicolas Pitre
2011-12-05 18:02                         ` Dave Martin
2011-12-05 18:15                           ` Geert Uytterhoeven
2011-12-05 18:18                           ` Nicolas Pitre
     [not found]                             ` <alpine.LFD.2.02.1112051310150.2357-QuJgVwGFrdf/9pzu0YdTqQ@public.gmane.org>
2011-12-05 18:45                               ` Alan Cox
2011-12-05 19:19                                 ` James Bottomley
2011-12-06  6:13                                 ` Jean-Christophe PLAGNIOL-VILLARD
     [not found]                                   ` <20111206061321.GH9192-RQcB7r2h9QmfDR2tN2SG5Ni2O/JbrIOy@public.gmane.org>
2011-12-06 11:34                                     ` Alan Cox
2011-12-05 19:16                               ` Rob Herring
2011-12-05 20:21                                 ` Anton Vorontsov
2011-12-05 20:47                                   ` Rob Herring
     [not found]                                     ` <4EDD2DE1.1050606-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2011-12-05 20:53                                       ` Alan Cox
2011-12-06  9:30                                     ` Dave Martin
     [not found]                                       ` <20111206093000.GA2274-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2011-12-06 10:34                                         ` Alan Cox
2011-12-06 10:55                                         ` Russell King - ARM Linux
2011-12-05 19:26                             ` Dave Martin
2011-12-05 19:49                               ` Nicolas Pitre
2011-12-06  9:37                                 ` Dave Martin
     [not found]                                   ` <20111206093709.GB2274-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2011-12-06 10:46                                     ` Russell King - ARM Linux
2011-12-06 11:00                                       ` Geert Uytterhoeven
2011-12-06 11:03                                         ` Russell King - ARM Linux
2011-12-06 11:10                                         ` Alan Cox
2011-12-06 11:05                                       ` Alan Cox
     [not found]                                         ` <20111206110554.53bddd14-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
2011-12-06 11:25                                           ` Russell King - ARM Linux
2011-12-06 12:11                                             ` Alan Cox [this message]
2011-12-06 11:37                                       ` Dave Martin
2011-12-06 11:49                                         ` Russell King - ARM Linux
2011-12-06 13:25                                           ` Dave Martin
2011-12-06 19:56                                           ` Rob Herring
2011-12-06 19:20                                       ` Linus Torvalds
2011-12-06 20:00                                         ` Russell King - ARM Linux
     [not found]                                         ` <CA+55aFwZBr+3_S9kU-+m8zN8iwOvn2miuuAy-zt7sUjW_+abBg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-12-06 20:59                                           ` Uwe Kleine-König
2011-12-06 19:11                                   ` Nicolas Pitre
     [not found]                       ` <20111205161157.GA27550-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2011-12-05 17:41                         ` Alan Cox
2011-11-10 15:35         ` [PATCH] ata: Fix build error in pata_of_platform (NO_IRQ usage) Alan Cox
2011-11-10 18:18       ` linux-next: Tree for Oct 11 (ata/pata_of_platform.c) Jeff Garzik
     [not found] ` <20111011201127.455df266dcbffb1d621f8576-3FnU+UHB4dNDw9hX6IcOSA@public.gmane.org>
2011-10-11 20:45   ` linux-next: Tree for Oct 11 (iio/resolver) Randy Dunlap
     [not found]     ` <4E94AADA.4080204-/UHa2rfvQTnk1uMJSBkQmQ@public.gmane.org>
2011-10-12  8:58       ` Jonathan Cameron

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