From: Russell King <rmk+lkml@arm.linux.org.uk>
To: Olivier Galibert <galibert@pobox.com>,
Greg Kroah-Hartman <gregkh@suse.de>,
linux-kernel@vger.kernel.org, David Vrabel <dvrabel@arcom.com>
Subject: Re: [PATCH 04/23] driver core: platform_get_irq*(): return -ENXIO on error
Date: Tue, 21 Mar 2006 20:31:25 +0000 [thread overview]
Message-ID: <20060321203124.GC20424@flint.arm.linux.org.uk> (raw)
In-Reply-To: <20060321125049.GB83095@dspnet.fr.eu.org>
On Tue, Mar 21, 2006 at 01:50:49PM +0100, Olivier Galibert wrote:
> On Tue, Mar 21, 2006 at 08:07:09AM +0000, Russell King wrote:
> > On Tue, Mar 21, 2006 at 01:13:36AM +0100, Olivier Galibert wrote:
> > > On Mon, Mar 20, 2006 at 02:00:38PM -0800, Greg Kroah-Hartman wrote:
> > > > platform_get_irq*() cannot return 0 on error as 0 is a valid IRQ on some
> > > > platforms, return -ENXIO instead.
> > >
> > > 0 is NO_IRQ, and can not be a valid IRQ number, ever. A
> > > platform_get_irq*() returning 0 as a valid irq is buggy.
> > >
> > > Check http://lkml.org/lkml/2005/11/21/211
> >
> > No. That's Linus' _opinion_, which is not applicable to systems without
> > the obviously broken PCI or ISA busses. On such systems, IRQ0 has no
> > special meaning what so ever.
>
> Do the drivers know?
If you look at the following patch in the series, the users of this function
have been updated. So the answer is "yes".
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
next prev parent reply other threads:[~2006-03-21 20:31 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-20 21:50 [GIT PATCH] Driver Core and sysfs stuff for 2.6.16 Greg KH
2006-03-20 22:00 ` [PATCH 01/23] sysfs: sysfs_remove_dir() needs to invalidate the dentry Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 02/23] kobject: fix build error if CONFIG_SYSFS=n Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 03/23] Mark empty release functions as broken Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 04/23] driver core: platform_get_irq*(): return -ENXIO on error Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 05/23] handle errors returned by platform_get_irq*() Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 06/23] kref: avoid an atomic operation in kref_put() Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 07/23] kobj_map semaphore to mutex conversion Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 08/23] Clean up module.c symbol searching logic Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 09/23] add EXPORT_SYMBOL_GPL_FUTURE() Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 10/23] add EXPORT_SYMBOL_GPL_FUTURE() to RCU subsystem Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 12/23] fix module sysfs files reference counting Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 13/23] sysfs: kzalloc conversion Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 14/23] firmware: fix BUG: in fw_realloc_buffer Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 15/23] Driver core: add macros notice(), dev_notice() Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 16/23] Kobject: provide better warning messages when people do stupid things Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 17/23] Kobject: kobject.h: fix a typo Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 18/23] sysfs: fix problem with duplicate sysfs directories and files Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 19/23] debugfs: Add debugfs_create_blob() helper for exporting binary data Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 20/23] kobject_add_dir Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 21/23] get_cpu_sysdev() signedness fix Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 22/23] sysfs: don't export dir symbols Greg Kroah-Hartman
2006-03-20 22:00 ` [PATCH 23/23] sysfs: fix a kobject leak in sysfs_add_link on the error path Greg Kroah-Hartman
2006-03-21 17:16 ` [PATCH 16/23] Kobject: provide better warning messages when people do stupid things Artem B. Bityutskiy
2006-03-22 22:17 ` Greg KH
2006-03-25 8:52 ` Artem B. Bityutskiy
2006-03-21 0:13 ` [PATCH 04/23] driver core: platform_get_irq*(): return -ENXIO on error Olivier Galibert
2006-03-21 8:07 ` Russell King
2006-03-21 12:50 ` Olivier Galibert
2006-03-21 20:31 ` Russell King [this message]
2006-03-21 22:50 ` Olivier Galibert
2006-03-21 9:33 ` David Vrabel
2006-03-20 23:35 ` [PATCH 02/23] kobject: fix build error if CONFIG_SYSFS=n Jun'ichi Nomura
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20060321203124.GC20424@flint.arm.linux.org.uk \
--to=rmk+lkml@arm.linux.org.uk \
--cc=dvrabel@arcom.com \
--cc=galibert@pobox.com \
--cc=gregkh@suse.de \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox