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Message-ID: <CAE9FiQV_hv3fD166LuZYhTKGxeKKKCw-Dak+8UYou7tRa-4hYw@mail.gmail.com>
Date: Tue, 26 Feb 2013 11:07:36 -0800
From: Yinghai Lu <yinghai@...nel.org>
To: Jiang Liu <liuj97@...il.com>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>,
"Rafael J . Wysocki" <rjw@...k.pl>,
Myron Stowe <myron.stowe@...hat.com>,
Yijing Wang <wangyijing@...wei.com>,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
Toshi Kani <toshi.kani@...com>,
Jiang Liu <jiang.liu@...wei.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Subject: Re: [PATCH v8 13/13] PCI, ACPI: remove support of ACPI PCI subdrivers
On Tue, Feb 26, 2013 at 7:25 AM, Jiang Liu <liuj97@...il.com> wrote:
> From: Myron Stowe <myron.stowe@...hat.com>
>
> Both sub-drivers of the "PCI Root Bridge ("pci_bridge")" driver, "acpiphp"
> and "pci_slot", have been converted to hook directly into the PCI core.
>
> With the conversions there are no remaining usages of the 'struct
> acpi_pci_driver' list based infrastructure. This patch removes it.
>
> Signed-off-by: Myron Stowe <myron.stowe@...hat.com>
> Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
> Cc: Yinghai Lu <yinghai@...nel.org>
> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
> Cc: Toshi Kani <toshi.kani@...com>
> Cc: linux-pci@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
Nice cleanup!
for 1-13,
Reviewed-by: Yinghai Lu <yinghai@...nel.org>
Thanks
Yinghai
> ---
> drivers/acpi/pci_root.c | 48 +----------------------------------------------
> include/linux/acpi.h | 9 ---------
> 2 files changed, 1 insertion(+), 56 deletions(-)
>
> diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
> index 8b5a73b..2ef0c91 100644
> --- a/drivers/acpi/pci_root.c
> +++ b/drivers/acpi/pci_root.c
> @@ -69,44 +69,12 @@ static struct acpi_driver acpi_pci_root_driver = {
> },
> };
>
> -/* Lock to protect both acpi_pci_roots and acpi_pci_drivers lists */
> +/* Lock to protect both acpi_pci_roots lists */
> static DEFINE_MUTEX(acpi_pci_root_lock);
> static LIST_HEAD(acpi_pci_roots);
> -static LIST_HEAD(acpi_pci_drivers);
>
> static DEFINE_MUTEX(osc_lock);
>
> -int acpi_pci_register_driver(struct acpi_pci_driver *driver)
> -{
> - int n = 0;
> - struct acpi_pci_root *root;
> -
> - mutex_lock(&acpi_pci_root_lock);
> - list_add_tail(&driver->node, &acpi_pci_drivers);
> - if (driver->add)
> - list_for_each_entry(root, &acpi_pci_roots, node) {
> - driver->add(root);
> - n++;
> - }
> - mutex_unlock(&acpi_pci_root_lock);
> -
> - return n;
> -}
> -EXPORT_SYMBOL(acpi_pci_register_driver);
> -
> -void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
> -{
> - struct acpi_pci_root *root;
> -
> - mutex_lock(&acpi_pci_root_lock);
> - list_del(&driver->node);
> - if (driver->remove)
> - list_for_each_entry(root, &acpi_pci_roots, node)
> - driver->remove(root);
> - mutex_unlock(&acpi_pci_root_lock);
> -}
> -EXPORT_SYMBOL(acpi_pci_unregister_driver);
> -
> /**
> * acpi_is_root_bridge - determine whether an ACPI CA node is a PCI root bridge
> * @handle - the ACPI CA node in question.
> @@ -416,7 +384,6 @@ static int acpi_pci_root_add(struct acpi_device *device)
> acpi_status status;
> int result;
> struct acpi_pci_root *root;
> - struct acpi_pci_driver *driver;
> u32 flags, base_flags;
> bool is_osc_granted = false;
>
> @@ -576,12 +543,6 @@ static int acpi_pci_root_add(struct acpi_device *device)
> pci_assign_unassigned_bus_resources(root->bus);
> }
>
> - mutex_lock(&acpi_pci_root_lock);
> - list_for_each_entry(driver, &acpi_pci_drivers, node)
> - if (driver->add)
> - driver->add(root);
> - mutex_unlock(&acpi_pci_root_lock);
> -
> /* need to after hot-added ioapic is registered */
> if (system_state != SYSTEM_BOOTING)
> pci_enable_bridges(root->bus);
> @@ -602,16 +563,9 @@ end:
> static int acpi_pci_root_remove(struct acpi_device *device, int type)
> {
> struct acpi_pci_root *root = acpi_driver_data(device);
> - struct acpi_pci_driver *driver;
>
> pci_stop_root_bus(root->bus);
>
> - mutex_lock(&acpi_pci_root_lock);
> - list_for_each_entry_reverse(driver, &acpi_pci_drivers, node)
> - if (driver->remove)
> - driver->remove(root);
> - mutex_unlock(&acpi_pci_root_lock);
> -
> device_set_run_wake(root->bus->bridge, false);
> pci_acpi_remove_bus_pm_notifier(device);
>
> diff --git a/include/linux/acpi.h b/include/linux/acpi.h
> index 8c1d6f2..eeb5600 100644
> --- a/include/linux/acpi.h
> +++ b/include/linux/acpi.h
> @@ -147,15 +147,6 @@ void acpi_penalize_isa_irq(int irq, int active);
>
> void acpi_pci_irq_disable (struct pci_dev *dev);
>
> -struct acpi_pci_driver {
> - struct list_head node;
> - int (*add)(struct acpi_pci_root *root);
> - void (*remove)(struct acpi_pci_root *root);
> -};
> -
> -int acpi_pci_register_driver(struct acpi_pci_driver *driver);
> -void acpi_pci_unregister_driver(struct acpi_pci_driver *driver);
> -
> extern int ec_read(u8 addr, u8 *val);
> extern int ec_write(u8 addr, u8 val);
> extern int ec_transaction(u8 command,
> --
> 1.7.9.5
>
--
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