[PATCH] PCI: export symbol pci_bus_sem to module

[PATCH] PCI: export symbol pci_bus_sem to module

[Jiang Liu]

Changeset "9080648 PCI: acpiphp: remove all functions in slot,
even without ACPI _EJx" introduces pci_bus_sem into the acpiphp
driver, but pci_bus_sem hasn't been exported to modules yet.
So export symbol pci_bus_sem to modules, otherwise the acpiphp
driver can't be built as module any more.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Jiang Liu <liuj97@gmail.com>
---
 drivers/pci/search.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 9d75dc8..e0c7a22 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -15,6 +15,8 @@
 #include "pci.h"
 
 DECLARE_RWSEM(pci_bus_sem);
+EXPORT_SYMBOL(pci_bus_sem);
+
 /*
  * find the upstream PCIe-to-PCI bridge of a PCI device
  * if the device is PCIE, return NULL
-- 
1.7.1

Re: [PATCH] PCI: export symbol pci_bus_sem to module

[Yinghai Lu]

[-- Attachment #1: Type: text/plain, Size: 1275 bytes --]

On Mon, May 28, 2012 at 12:33 AM, Jiang Liu <jiang.liu@huawei.com> wrote:
> Changeset "9080648 PCI: acpiphp: remove all functions in slot,
> even without ACPI _EJx" introduces pci_bus_sem into the acpiphp
> driver, but pci_bus_sem hasn't been exported to modules yet.
> So export symbol pci_bus_sem to modules, otherwise the acpiphp
> driver can't be built as module any more.
>
> Signed-off-by: Yijing Wang <wangyijing@huawei.com>
> Signed-off-by: Jiang Liu <liuj97@gmail.com>
> ---
>  drivers/pci/search.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/pci/search.c b/drivers/pci/search.c
> index 9d75dc8..e0c7a22 100644
> --- a/drivers/pci/search.c
> +++ b/drivers/pci/search.c
> @@ -15,6 +15,8 @@
>  #include "pci.h"
>
>  DECLARE_RWSEM(pci_bus_sem);
> +EXPORT_SYMBOL(pci_bus_sem);
> +
>  /*
>  * find the upstream PCIe-to-PCI bridge of a PCI device
>  * if the device is PCIE, return NULL

Bjorn,

can you please fold this one into

9080648:
PCI: acpiphp: remove all functions in slot, even without ACPI _EJx

that commit now is in pci/for-3.6

Fengguang's auto compiling test robot reported same error on my
for-pci-root-bus-hotplug branch that is based on
pci/for-3.6.

Thanks

Yinghai

[-- Attachment #2: fix_acpiphp_mod.patch --]
[-- Type: application/octet-stream, Size: 495 bytes --]

Subject: [PATCH] PCI: Fix compiling of acpiphp as module

Reported-by: Fengguang Wu <wfg@linux.intel.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>

diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 9d75dc8..8630ca2 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -15,6 +15,7 @@
 #include "pci.h"
 
 DECLARE_RWSEM(pci_bus_sem);
+EXPORT_SYMBOL_GPL(pci_bus_sem);
 /*
  * find the upstream PCIe-to-PCI bridge of a PCI device
  * if the device is PCIE, return NULL

Re: [PATCH] PCI: export symbol pci_bus_sem to module

[Bjorn Helgaas]

On Fri, Jun 8, 2012 at 12:01 AM, Yinghai Lu <yinghai@kernel.org> wrote:
> On Mon, May 28, 2012 at 12:33 AM, Jiang Liu <jiang.liu@huawei.com> wrote:
>> Changeset "9080648 PCI: acpiphp: remove all functions in slot,
>> even without ACPI _EJx" introduces pci_bus_sem into the acpiphp
>> driver, but pci_bus_sem hasn't been exported to modules yet.
>> So export symbol pci_bus_sem to modules, otherwise the acpiphp
>> driver can't be built as module any more.
>>
>> Signed-off-by: Yijing Wang <wangyijing@huawei.com>
>> Signed-off-by: Jiang Liu <liuj97@gmail.com>
>> ---
>>  drivers/pci/search.c |    2 ++
>>  1 files changed, 2 insertions(+), 0 deletions(-)
>>
>> diff --git a/drivers/pci/search.c b/drivers/pci/search.c
>> index 9d75dc8..e0c7a22 100644
>> --- a/drivers/pci/search.c
>> +++ b/drivers/pci/search.c
>> @@ -15,6 +15,8 @@
>>  #include "pci.h"
>>
>>  DECLARE_RWSEM(pci_bus_sem);
>> +EXPORT_SYMBOL(pci_bus_sem);
>> +
>>  /*
>>  * find the upstream PCIe-to-PCI bridge of a PCI device
>>  * if the device is PCIE, return NULL
>
> Bjorn,
>
> can you please fold this one into
>
> 9080648:
> PCI: acpiphp: remove all functions in slot, even without ACPI _EJx
>
> that commit now is in pci/for-3.6

Yes, I'll fix this.  If you don't object, I'll make it
EXPORT_SYMBOL_GPL().  I think we'll have more changes in the bus
scan/remove paths, and it's possible we'll be able to un-export this
in the future.

Bjorn

Re: [PATCH] PCI: export symbol pci_bus_sem to module

[Yinghai Lu]

On Mon, Jun 11, 2012 at 10:43 AM, Bjorn Helgaas <bhelgaas@google.com> wrote:
> On Fri, Jun 8, 2012 at 12:01 AM, Yinghai Lu <yinghai@kernel.org> wrote:
>> On Mon, May 28, 2012 at 12:33 AM, Jiang Liu <jiang.liu@huawei.com> wrote:
>>> Changeset "9080648 PCI: acpiphp: remove all functions in slot,
>>> even without ACPI _EJx" introduces pci_bus_sem into the acpiphp
>>> driver, but pci_bus_sem hasn't been exported to modules yet.
>>> So export symbol pci_bus_sem to modules, otherwise the acpiphp
>>> driver can't be built as module any more.
>>>
>>> Signed-off-by: Yijing Wang <wangyijing@huawei.com>
>>> Signed-off-by: Jiang Liu <liuj97@gmail.com>
>>> ---
>>>  drivers/pci/search.c |    2 ++
>>>  1 files changed, 2 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/drivers/pci/search.c b/drivers/pci/search.c
>>> index 9d75dc8..e0c7a22 100644
>>> --- a/drivers/pci/search.c
>>> +++ b/drivers/pci/search.c
>>> @@ -15,6 +15,8 @@
>>>  #include "pci.h"
>>>
>>>  DECLARE_RWSEM(pci_bus_sem);
>>> +EXPORT_SYMBOL(pci_bus_sem);
>>> +
>>>  /*
>>>  * find the upstream PCIe-to-PCI bridge of a PCI device
>>>  * if the device is PCIE, return NULL
>>
>> Bjorn,
>>
>> can you please fold this one into
>>
>> 9080648:
>> PCI: acpiphp: remove all functions in slot, even without ACPI _EJx
>>
>> that commit now is in pci/for-3.6
>
> Yes, I'll fix this.  If you don't object, I'll make it
> EXPORT_SYMBOL_GPL().  I think we'll have more changes in the bus
> scan/remove paths, and it's possible we'll be able to un-export this
> in the future.

yes, it should be EXPORT_SYMBOL_GPL.

I updated that in attachment.

Thanks

Yinghai

Re: [PATCH] PCI: export symbol pci_bus_sem to module

[Bjorn Helgaas]

On Mon, Jun 11, 2012 at 2:01 PM, Yinghai Lu <yinghai@kernel.org> wrote:
> On Mon, Jun 11, 2012 at 10:43 AM, Bjorn Helgaas <bhelgaas@google.com> wrote:
>> On Fri, Jun 8, 2012 at 12:01 AM, Yinghai Lu <yinghai@kernel.org> wrote:
>>> On Mon, May 28, 2012 at 12:33 AM, Jiang Liu <jiang.liu@huawei.com> wrote:
>>>> Changeset "9080648 PCI: acpiphp: remove all functions in slot,
>>>> even without ACPI _EJx" introduces pci_bus_sem into the acpiphp
>>>> driver, but pci_bus_sem hasn't been exported to modules yet.
>>>> So export symbol pci_bus_sem to modules, otherwise the acpiphp
>>>> driver can't be built as module any more.
>>>>
>>>> Signed-off-by: Yijing Wang <wangyijing@huawei.com>
>>>> Signed-off-by: Jiang Liu <liuj97@gmail.com>
>>>> ---
>>>>  drivers/pci/search.c |    2 ++
>>>>  1 files changed, 2 insertions(+), 0 deletions(-)
>>>>
>>>> diff --git a/drivers/pci/search.c b/drivers/pci/search.c
>>>> index 9d75dc8..e0c7a22 100644
>>>> --- a/drivers/pci/search.c
>>>> +++ b/drivers/pci/search.c
>>>> @@ -15,6 +15,8 @@
>>>>  #include "pci.h"
>>>>
>>>>  DECLARE_RWSEM(pci_bus_sem);
>>>> +EXPORT_SYMBOL(pci_bus_sem);
>>>> +
>>>>  /*
>>>>  * find the upstream PCIe-to-PCI bridge of a PCI device
>>>>  * if the device is PCIE, return NULL
>>>
>>> Bjorn,
>>>
>>> can you please fold this one into
>>>
>>> 9080648:
>>> PCI: acpiphp: remove all functions in slot, even without ACPI _EJx
>>>
>>> that commit now is in pci/for-3.6
>>
>> Yes, I'll fix this.  If you don't object, I'll make it
>> EXPORT_SYMBOL_GPL().  I think we'll have more changes in the bus
>> scan/remove paths, and it's possible we'll be able to un-export this
>> in the future.
>
> yes, it should be EXPORT_SYMBOL_GPL.

I applied this to my "next" branch, with EXPORT_SYMBOL_GPL.  Thanks!