From: Markus Armbruster <armbru@redhat.com>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 08/13] qdev: device free fixups.
Date: Thu, 24 Sep 2009 20:55:17 +0200 [thread overview]
Message-ID: <87hbusb2ay.fsf@pike.pond.sub.org> (raw)
In-Reply-To: <1253611767-6483-9-git-send-email-kraxel@redhat.com> (Gerd Hoffmann's message of "Tue\, 22 Sep 2009 11\:29\:22 +0200")
Gerd Hoffmann <kraxel@redhat.com> writes:
> Two bug fixes:
> * When freeing a device we unregister stuff unconditionally,
> even in case we didn't register in the first place because
> the ->init() callback failed.
> * When freeing a device with child busses attached we don't
> zap the child bus (and the devices attached to it).
>
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Maybe I'm just having a particularly dense day, but I misread this as
"this is what the fix does". In reality, it's "this is what we did
wrong". Careless readers like me can be kept on track by emphasizing
the "wrongness" of what's being done, so that it's (more) obvious we're
talking about the bug and not the fix:
* When freeing a device we unregister even stuff we didn't register in
the first place because the ->init() callback failed.
* When freeing a device with child busses attached, we fail to zap the
child bus (and the devices attached to it).
Another language trick is to use past tense for the bug and present
tense for the fix.
next prev parent reply other threads:[~2009-09-24 18:55 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-22 9:29 [Qemu-devel] [PATCH 00/13] qdev: bus management updates Gerd Hoffmann
2009-09-22 9:29 ` [Qemu-devel] [PATCH 01/13] allow qdev busses allocations be inplace Gerd Hoffmann
2009-09-22 9:29 ` [Qemu-devel] [PATCH 02/13] switch scsi bus to inplace allocation Gerd Hoffmann
2009-09-22 9:29 ` [Qemu-devel] [PATCH 03/13] switch usb " Gerd Hoffmann
2009-09-22 9:29 ` [Qemu-devel] [PATCH 04/13] switch ide " Gerd Hoffmann
2009-09-22 9:29 ` [Qemu-devel] [PATCH 05/13] inplace allocation for pci, split irq init Gerd Hoffmann
2009-09-22 9:29 ` [Qemu-devel] [PATCH 06/13] convert pci bridge to qdev Gerd Hoffmann
2009-09-23 16:02 ` Michael S. Tsirkin
2009-09-24 18:29 ` Markus Armbruster
2009-09-24 18:51 ` Michael S. Tsirkin
2009-09-25 7:19 ` Gerd Hoffmann
2009-09-22 9:29 ` [Qemu-devel] [PATCH 07/13] piix_pci: kill PIIX3IrqState Gerd Hoffmann
2009-09-24 18:42 ` Markus Armbruster
2009-09-25 7:24 ` Gerd Hoffmann
2009-09-22 9:29 ` [Qemu-devel] [PATCH 08/13] qdev: device free fixups Gerd Hoffmann
2009-09-24 18:55 ` Markus Armbruster [this message]
2009-09-22 9:29 ` [Qemu-devel] [PATCH 09/13] Add exit callback to DeviceInfo Gerd Hoffmann
2009-09-22 10:06 ` Christoph Egger
2009-09-22 10:19 ` Gerd Hoffmann
2009-09-24 19:02 ` Markus Armbruster
2009-09-25 7:33 ` Gerd Hoffmann
2009-09-22 9:29 ` [Qemu-devel] [PATCH 10/13] Implement scsi device destruction Gerd Hoffmann
2009-09-24 19:15 ` Markus Armbruster
2009-09-25 7:45 ` Gerd Hoffmann
2009-09-25 13:10 ` Markus Armbruster
2009-09-25 14:54 ` Gerd Hoffmann
2009-09-25 15:59 ` Artyom Tarasenko
2009-09-25 16:31 ` Markus Armbruster
2009-09-22 9:29 ` [Qemu-devel] [PATCH 11/13] pci: use qdev for " Gerd Hoffmann
2009-09-22 9:29 ` [Qemu-devel] [PATCH 12/13] pci: move unregister from PCIDevice to PCIDeviceInfo Gerd Hoffmann
2009-09-23 15:58 ` Michael S. Tsirkin
2009-09-25 7:49 ` Gerd Hoffmann
2009-09-29 15:50 ` Michael S. Tsirkin
2009-09-29 18:16 ` Gerd Hoffmann
2009-09-22 9:29 ` [Qemu-devel] [PATCH 13/13] usb: hook unplug into qdev, cleanups + fixes Gerd Hoffmann
2009-09-24 19:18 ` [Qemu-devel] [PATCH 00/13] qdev: bus management updates Markus Armbruster
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