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From: Bjorn Helgaas <bhelgaas@google.com>
To: Jiang Liu <liuj97@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>, Jiang Liu <jiang.liu@huawei.com>,
	"Rafael J . Wysocki" <rjw@sisk.pl>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Gu Zheng <guz.fnst@cn.fujitsu.com>,
	Toshi Kani <toshi.kani@hp.com>,
	Myron Stowe <myron.stowe@redhat.com>,
	Yijing Wang <wangyijing@huawei.com>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Greg Ungerer <gerg@uclinux.org>,
	linux-m68k@vger.kernel.org, Guan Xuetao <gxt@mprc.pku.edu.cn>
Subject: Re: [PATCH v3, part1 07/10] PCI, unicore, m68k: remove redundant call of pci_bus_add_devices()
Date: Wed, 5 Jun 2013 15:31:11 -0600	[thread overview]
Message-ID: <CAErSpo7Lbu_MuxYGa6sghu7xuDJ9ZFN8pK0=xM0QMOwr=P2Y_Q@mail.gmail.com> (raw)
In-Reply-To: <1369489718-25869-8-git-send-email-jiang.liu@huawei.com>

[+cc m68k and unicore32 maintainers]

On Sat, May 25, 2013 at 7:48 AM, Jiang Liu <liuj97@gmail.com> wrote:
> pci_scan_bus() and pci_scan_root_bus() has called pci_bus_add_devices()
> once, so remove the redundant call of pci_bus_add_devices().
> On the other handle, subsys_init() callbacks will be invoked before
> device_init() callbacks, so it should be safe to remove the redundant
> calls.
>
> Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
> ---
>  arch/m68k/platform/coldfire/pci.c | 2 +-
>  arch/unicore32/kernel/pci.c       | 5 -----
>  2 files changed, 1 insertion(+), 6 deletions(-)

m68k and unicore32 guys:

I plan to apply the patch below.  I actually split it into two, one
for m68k and another for unicore32.  If you object or would rather
push it through your trees, let me know.  I don't think the rest of
the series has any actual dependency on this, so there shouldn't be
any problem if you want to take it yourselves.

Bjorn

> diff --git a/arch/m68k/platform/coldfire/pci.c b/arch/m68k/platform/coldfire/pci.c
> index 8572246..2345972 100644
> --- a/arch/m68k/platform/coldfire/pci.c
> +++ b/arch/m68k/platform/coldfire/pci.c
> @@ -320,7 +320,7 @@ static int __init mcf_pci_init(void)
>         pci_bus_size_bridges(rootbus);
>         pci_bus_assign_resources(rootbus);
>         pci_enable_bridges(rootbus);
> -       pci_bus_add_devices(rootbus);
> +
>         return 0;
>  }
>
> diff --git a/arch/unicore32/kernel/pci.c b/arch/unicore32/kernel/pci.c
> index ef69c0c..374a055 100644
> --- a/arch/unicore32/kernel/pci.c
> +++ b/arch/unicore32/kernel/pci.c
> @@ -277,11 +277,6 @@ static int __init pci_common_init(void)
>                 pci_bus_assign_resources(puv3_bus);
>         }
>
> -       /*
> -        * Tell drivers about devices found.
> -        */
> -       pci_bus_add_devices(puv3_bus);
> -
>         return 0;
>  }
>  subsys_initcall(pci_common_init);
> --
> 1.8.1.2
>

WARNING: multiple messages have this Message-ID (diff)
From: Bjorn Helgaas <bhelgaas@google.com>
To: Jiang Liu <liuj97@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>, Jiang Liu <jiang.liu@huawei.com>,
	"Rafael J . Wysocki" <rjw@sisk.pl>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Gu Zheng <guz.fnst@cn.fujitsu.com>,
	Toshi Kani <toshi.kani@hp.com>,
	Myron Stowe <myron.stowe@redhat.com>,
	Yijing Wang <wangyijing@huawei.com>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Greg Ungerer <gerg@uclinux.org>,
	linux-m68k@lists.linux-m68k.org,
	Guan Xuetao <gxt@mprc.pku.edu.cn>
Subject: Re: [PATCH v3, part1 07/10] PCI, unicore, m68k: remove redundant call of pci_bus_add_devices()
Date: Wed, 5 Jun 2013 15:31:11 -0600	[thread overview]
Message-ID: <CAErSpo7Lbu_MuxYGa6sghu7xuDJ9ZFN8pK0=xM0QMOwr=P2Y_Q@mail.gmail.com> (raw)
In-Reply-To: <1369489718-25869-8-git-send-email-jiang.liu@huawei.com>

[+cc m68k and unicore32 maintainers]

On Sat, May 25, 2013 at 7:48 AM, Jiang Liu <liuj97@gmail.com> wrote:
> pci_scan_bus() and pci_scan_root_bus() has called pci_bus_add_devices()
> once, so remove the redundant call of pci_bus_add_devices().
> On the other handle, subsys_init() callbacks will be invoked before
> device_init() callbacks, so it should be safe to remove the redundant
> calls.
>
> Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
> ---
>  arch/m68k/platform/coldfire/pci.c | 2 +-
>  arch/unicore32/kernel/pci.c       | 5 -----
>  2 files changed, 1 insertion(+), 6 deletions(-)

m68k and unicore32 guys:

I plan to apply the patch below.  I actually split it into two, one
for m68k and another for unicore32.  If you object or would rather
push it through your trees, let me know.  I don't think the rest of
the series has any actual dependency on this, so there shouldn't be
any problem if you want to take it yourselves.

Bjorn

> diff --git a/arch/m68k/platform/coldfire/pci.c b/arch/m68k/platform/coldfire/pci.c
> index 8572246..2345972 100644
> --- a/arch/m68k/platform/coldfire/pci.c
> +++ b/arch/m68k/platform/coldfire/pci.c
> @@ -320,7 +320,7 @@ static int __init mcf_pci_init(void)
>         pci_bus_size_bridges(rootbus);
>         pci_bus_assign_resources(rootbus);
>         pci_enable_bridges(rootbus);
> -       pci_bus_add_devices(rootbus);
> +
>         return 0;
>  }
>
> diff --git a/arch/unicore32/kernel/pci.c b/arch/unicore32/kernel/pci.c
> index ef69c0c..374a055 100644
> --- a/arch/unicore32/kernel/pci.c
> +++ b/arch/unicore32/kernel/pci.c
> @@ -277,11 +277,6 @@ static int __init pci_common_init(void)
>                 pci_bus_assign_resources(puv3_bus);
>         }
>
> -       /*
> -        * Tell drivers about devices found.
> -        */
> -       pci_bus_add_devices(puv3_bus);
> -
>         return 0;
>  }
>  subsys_initcall(pci_common_init);
> --
> 1.8.1.2
>

  reply	other threads:[~2013-06-05 21:31 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-25 13:48 [PATCH v3, part1 00/10] Prepare for introducing PCI bus lock interfaces Jiang Liu
2013-05-25 13:48 ` [PATCH v3, part1 01/10] PCI: introduce pci_bus_{get|put}() to manage PCI bus reference count Jiang Liu
2013-05-25 13:48 ` [PATCH v3, part1 02/10] PCI: Introduce pci_alloc_dev(struct pci_bus*) to replace alloc_pci_dev() Jiang Liu
2013-05-25 13:48 ` [PATCH v3, part1 03/10] PCI: Convert alloc_pci_dev(void) to pci_alloc_dev(bus) instead Jiang Liu
2013-05-25 13:48   ` Jiang Liu
2013-05-25 13:48   ` Jiang Liu
2013-06-05 20:07   ` Bjorn Helgaas
2013-06-05 20:07     ` Bjorn Helgaas
2013-06-05 20:07     ` Bjorn Helgaas
2013-06-06 16:16     ` Jiang Liu
2013-06-06 16:16       ` Jiang Liu
2013-06-06 16:16       ` Jiang Liu
2013-05-25 13:48 ` [PATCH v3, part1 04/10] PCI: mark pci_scan_bus_parented() as __deprecated Jiang Liu
2013-05-31 20:12   ` Chris Metcalf
2013-06-05 20:04   ` Bjorn Helgaas
2013-06-06 16:32     ` Jiang Liu
2013-06-07 14:37       ` Konrad Rzeszutek Wilk
2013-06-07 15:11         ` Jiang Liu
2013-06-07 15:30         ` Jiang Liu
2013-06-07 20:37           ` Bjorn Helgaas
2013-05-25 13:48 ` [PATCH v3, part1 05/10] PCI, IA64: minor code clean up Jiang Liu
2013-05-25 13:48   ` Jiang Liu
2013-05-25 13:48 ` [PATCH v3, part1 06/10] PCI: make PCI host bridge/bus creating and destroying logic symmetric Jiang Liu
2013-06-05 20:14   ` Bjorn Helgaas
2013-06-06 17:10     ` [PATCH 1/2] PCI: fix a double free issue in pci_create_root_bus() error recovery path Jiang Liu
2013-06-08  1:42       ` Bjorn Helgaas
2013-06-06 17:10     ` [PATCH 2/2] PCI: make PCI host bridge/bus creating and destroying logic symmetric Jiang Liu
2013-06-06 20:01       ` Yinghai Lu
2013-06-08  1:51         ` Bjorn Helgaas
2013-06-08  7:01           ` Yinghai Lu
2013-06-14 23:53             ` Bjorn Helgaas
2013-06-15  1:46               ` Jiang Liu
2013-05-25 13:48 ` [PATCH v3, part1 07/10] PCI, unicore, m68k: remove redundant call of pci_bus_add_devices() Jiang Liu
2013-06-05 21:31   ` Bjorn Helgaas [this message]
2013-06-05 21:31     ` Bjorn Helgaas
2013-06-06  6:54     ` Greg Ungerer
2013-06-06  6:54       ` Greg Ungerer
2013-06-05 21:31   ` Bjorn Helgaas
2013-05-25 13:48 ` [PATCH v3, part1 08/10] PCI, IOV: don't touch bus->is_added flag Jiang Liu
2013-05-25 13:48 ` [PATCH v3, part1 09/10] PCI, IOV: simplify IOV implementation Jiang Liu
2013-05-28  2:00   ` Yinghai Lu
2013-05-28 14:48     ` Liu Jiang
2013-05-30  4:31   ` [PATCH] PCI, IOV: fix a resource leakage on error recovery path Jiang Liu
2013-05-30 18:24     ` Bjorn Helgaas
2013-05-25 13:48 ` [PATCH v3, part1 10/10] PCI, IOV: hide remove and rescan sysfs interfaces for SR-IOV virtual functions Jiang Liu

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