linux-kernel - Re: [PATCH] ACPI / hotplug: Simplify acpi_set_hp

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Date:	Tue, 15 Jul 2014 14:56:29 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Linux PCI <linux-pci@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: Re: [PATCH] ACPI / hotplug: Simplify acpi_set_hp_context()

On Mon, Jul 14, 2014 at 2:36 PM, Rafael J. Wysocki <rjw@...ysocki.net> wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
>
> Since all of the acpi_set_hp_context() callers pass at least one NULL
> function pointer and one caller passes NULL function pointers only
> to it, drop function pointer arguments from acpi_set_hp_context()
> and make the callers initialize the function pointers in struct
> acpi_hotplug_context by themselves before passing it to
> acpi_set_hp_context().
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>

> ---
>  drivers/acpi/scan.c                |    4 +++-
>  drivers/pci/hotplug/acpiphp_glue.c |    7 ++++---
>  include/acpi/acpi_bus.h            |    8 +-------
>  3 files changed, 8 insertions(+), 11 deletions(-)
>
> Index: linux-pm/include/acpi/acpi_bus.h
> ===================================================================
> --- linux-pm.orig/include/acpi/acpi_bus.h
> +++ linux-pm/include/acpi/acpi_bus.h
> @@ -372,15 +372,9 @@ static inline void acpi_set_device_statu
>  }
>
>  static inline void acpi_set_hp_context(struct acpi_device *adev,
> -                                      struct acpi_hotplug_context *hp,
> -                                      int (*notify)(struct acpi_device *, u32),
> -                                      void (*uevent)(struct acpi_device *, u32),
> -                                      void (*fixup)(struct acpi_device *))
> +                                      struct acpi_hotplug_context *hp)
>  {
>         hp->self = adev;
> -       hp->notify = notify;
> -       hp->uevent = uevent;
> -       hp->fixup = fixup;
>         adev->hp = hp;
>  }
>
> Index: linux-pm/drivers/acpi/scan.c
> ===================================================================
> --- linux-pm.orig/drivers/acpi/scan.c
> +++ linux-pm/drivers/acpi/scan.c
> @@ -77,7 +77,9 @@ void acpi_initialize_hp_context(struct a
>                                 void (*uevent)(struct acpi_device *, u32))
>  {
>         acpi_lock_hp_context();
> -       acpi_set_hp_context(adev, hp, notify, uevent, NULL);
> +       hp->notify = notify;
> +       hp->uevent = uevent;
> +       acpi_set_hp_context(adev, hp);
>         acpi_unlock_hp_context();
>  }
>  EXPORT_SYMBOL_GPL(acpi_initialize_hp_context);
> Index: linux-pm/drivers/pci/hotplug/acpiphp_glue.c
> ===================================================================
> --- linux-pm.orig/drivers/pci/hotplug/acpiphp_glue.c
> +++ linux-pm/drivers/pci/hotplug/acpiphp_glue.c
> @@ -80,8 +80,9 @@ static struct acpiphp_context *acpiphp_i
>                 return NULL;
>
>         context->refcount = 1;
> -       acpi_set_hp_context(adev, &context->hp, acpiphp_hotplug_notify, NULL,
> -                           acpiphp_post_dock_fixup);
> +       context->hp.notify = acpiphp_hotplug_notify;
> +       context->hp.fixup = acpiphp_post_dock_fixup;
> +       acpi_set_hp_context(adev, &context->hp);
>         return context;
>  }
>
> @@ -876,7 +877,7 @@ void acpiphp_enumerate_slots(struct pci_
>                         goto err;
>
>                 root_context->root_bridge = bridge;
> -               acpi_set_hp_context(adev, &root_context->hp, NULL, NULL, NULL);
> +               acpi_set_hp_context(adev, &root_context->hp);
>         } else {
>                 struct acpiphp_context *context;
>
>
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