From: Yinghai Lu <yinghai@kernel.org>
To: Jiang Liu <liuj97@gmail.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>, Len Brown <lenb@kernel.org>,
Tony Luck <tony.luck@intel.com>, Jiang Liu <jiang.liu@huawei.com>,
Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>,
Yijing Wang <wangyijing@huawei.com>,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH v2 5/9] ACPI/pci-bind: remove bind/unbind callbacks from acpi_device_ops
Date: Sat, 15 Sep 2012 16:27:22 -0700 [thread overview]
Message-ID: <CAE9FiQWk_2gPyVUiLgvRQ=qrFNby_R7Qh-QNruobQnhVFTn21w@mail.gmail.com> (raw)
In-Reply-To: <1347678312-11124-6-git-send-email-jiang.liu@huawei.com>
On Fri, Sep 14, 2012 at 8:05 PM, Jiang Liu <liuj97@gmail.com> wrote:
> From: Jiang Liu <jiang.liu@huawei.com>
>
> Now ACPI devices are created before/destroyed after corresponding PCI
> devices, and acpi_platform_notify/acpi_platform_notify_remove will
> update PCI<->ACPI binding relationship when creating/destroying PCI
> devices, there's no need to invoke bind/unbind callbacks from ACPI
> device probe/destroy routines anymore. So remove bind/unbind callbacks
> from acpi_device_ops.
>
> Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
> Signed-off-by: Yijing Wang <wangyijing@huawei.com>
> ---
> drivers/acpi/pci_bind.c | 100 +++++++++----------------------------------
> drivers/acpi/pci_root.c | 9 ----
> drivers/acpi/scan.c | 21 +--------
> include/acpi/acpi_bus.h | 4 --
> include/acpi/acpi_drivers.h | 1 -
> 5 files changed, 23 insertions(+), 112 deletions(-)
> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index d1ecca2..f31cb2f 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -1232,17 +1232,8 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
> dev->removal_type = ACPI_BUS_REMOVAL_EJECT;
> device_release_driver(&dev->dev);
>
> - if (!rmdevice)
> - return 0;
> -
> - /*
> - * unbind _ADR-Based Devices when hot removal
> - */
> - if (dev->flags.bus_address) {
> - if ((dev->parent) && (dev->parent->ops.unbind))
> - dev->parent->ops.unbind(dev);
> - }
> - acpi_device_unregister(dev, ACPI_BUS_REMOVAL_EJECT);
> + if (rmdevice)
> + acpi_device_unregister(dev, ACPI_BUS_REMOVAL_EJECT);
>
> return 0;
> }
for pci root bus, acpi_bus_trim() is used to remove acpi_device.
and later in acpi_pci_root_remove to stop pci drivers/ioapic driver,
iommu driver then remove pci devices.
if call back is removed there, then could some functions in
acpi_pci_unbind() will be skipped.
I really do not want to add pci_stop_bus_devices() in
pci_root_hp.c::handle_root_bridge_removal before
calling acpi_bus_trim...
Thanks
Yinghai
next prev parent reply other threads:[~2012-09-15 23:27 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-15 3:05 [PATCH v2 0/9] enhance PCI related drivers to handle hotplug events Jiang Liu
2012-09-15 3:05 ` [PATCH v2 1/9] PCI: make PCI device create/destroy logic symmetric Jiang Liu
2012-09-15 3:05 ` [PATCH v2 2/9] PCI: split registration of PCI bus devices into two stages Jiang Liu
2012-09-15 8:03 ` Yinghai Lu
2012-09-15 18:47 ` Yinghai Lu
2012-09-16 13:16 ` [PATCH v3] " Jiang Liu
2012-09-15 3:05 ` [PATCH v2 3/9] PCI: preserve dev->subordinate until pci_stop_dev() has been called Jiang Liu
2012-09-15 5:09 ` Yinghai Lu
2012-09-15 7:02 ` Jiang Liu
2012-09-15 3:05 ` [PATCH v2 4/9] ACPI/pci_bind: correctly update binding relationship for PCI hotplug Jiang Liu
2012-09-15 3:05 ` [PATCH v2 5/9] ACPI/pci-bind: remove bind/unbind callbacks from acpi_device_ops Jiang Liu
2012-09-15 18:53 ` Yinghai Lu
2012-09-16 14:09 ` [PATCH v3] " Jiang Liu
2012-09-16 16:49 ` Yinghai Lu
2012-09-16 18:02 ` Yinghai Lu
2012-09-17 3:06 ` Yinghai Lu
2012-09-17 15:26 ` Jiang Liu
2012-09-15 23:27 ` Yinghai Lu [this message]
2012-09-17 3:03 ` [PATCH v2 5/9] " Yinghai Lu
2012-09-17 14:22 ` Jiang Liu
2012-09-17 14:31 ` Jiang Liu
2012-09-17 15:41 ` Yinghai Lu
2012-09-15 3:05 ` [PATCH v2 6/9] ACPI/pci_slot: update PCI slot information when PCI hotplug event happens Jiang Liu
2012-09-15 3:05 ` [PATCH v2 7/9] PCI/acpiphp: update ACPI hotplug slot information when PCI hotplug happens Jiang Liu
2012-09-15 3:05 ` [PATCH v2 8/9] PCI/acpiphp: serialize access to the bridge_list list Jiang Liu
2012-09-15 3:05 ` [PATCH v2 9/9] PCI/AER: update AER configuration when PCI hotplug event happens Jiang Liu
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