[PATCH] tee: add forward declaration for struct device

[PATCH] tee: add forward declaration for struct device

[Jerome Forissier]

tee_drv.h references struct device, but does not include device.h nor
platform_device.h. Therefore, if tee_drv.h is included by some file
that does not pull device.h nor platform_device.h beforehand, we have a
compile warning. Fix this by adding a forward declaration.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
---
 include/linux/tee_drv.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
index 8614713..07bd226 100644
--- a/include/linux/tee_drv.h
+++ b/include/linux/tee_drv.h
@@ -29,6 +29,7 @@
 #define TEE_SHM_DMA_BUF		BIT(1)	/* Memory with dma-buf handle */
 #define TEE_SHM_EXT_DMA_BUF	BIT(2)	/* Memory with dma-buf handle */
 
+struct device;
 struct tee_device;
 struct tee_shm;
 struct tee_shm_pool;
-- 
2.7.4

[PATCH] tee: add forward declaration for struct device

[Jerome Forissier]

[+Arnd]

Ping?

Thanks,
-- 
Jerome

On 05/31/2017 01:21 PM, Jerome Forissier wrote:
> tee_drv.h references struct device, but does not include device.h nor
> platform_device.h. Therefore, if tee_drv.h is included by some file
> that does not pull device.h nor platform_device.h beforehand, we have a
> compile warning. Fix this by adding a forward declaration.
> 
> Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
> ---
>  include/linux/tee_drv.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
> index 8614713..07bd226 100644
> --- a/include/linux/tee_drv.h
> +++ b/include/linux/tee_drv.h
> @@ -29,6 +29,7 @@
>  #define TEE_SHM_DMA_BUF		BIT(1)	/* Memory with dma-buf handle */
>  #define TEE_SHM_EXT_DMA_BUF	BIT(2)	/* Memory with dma-buf handle */
>  
> +struct device;
>  struct tee_device;
>  struct tee_shm;
>  struct tee_shm_pool;
> 

[PATCH] tee: add forward declaration for struct device

[Jens Wiklander]

On Wed, Jun 14, 2017 at 11:39:50AM +0200, Jerome Forissier wrote:
> [+Arnd]
> 
> Ping?
> 
> Thanks,
> -- 
> Jerome
> 
> On 05/31/2017 01:21 PM, Jerome Forissier wrote:
> > tee_drv.h references struct device, but does not include device.h nor
> > platform_device.h. Therefore, if tee_drv.h is included by some file
> > that does not pull device.h nor platform_device.h beforehand, we have a
> > compile warning. Fix this by adding a forward declaration.
> > 
> > Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
> > ---
> >  include/linux/tee_drv.h | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
> > index 8614713..07bd226 100644
> > --- a/include/linux/tee_drv.h
> > +++ b/include/linux/tee_drv.h
> > @@ -29,6 +29,7 @@
> >  #define TEE_SHM_DMA_BUF		BIT(1)	/* Memory with dma-buf handle */
> >  #define TEE_SHM_EXT_DMA_BUF	BIT(2)	/* Memory with dma-buf handle */
> >  
> > +struct device;
> >  struct tee_device;
> >  struct tee_shm;
> >  struct tee_shm_pool;
> > 

Looks good to me.

Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

--
Thanks,
Jens

[PATCH] tee: add forward declaration for struct device

[Arnd Bergmann]

On Wed, Jun 14, 2017 at 11:46 AM, Jens Wiklander
<jens.wiklander@linaro.org> wrote:
> On Wed, Jun 14, 2017 at 11:39:50AM +0200, Jerome Forissier wrote:
>> [+Arnd]
>>
>> Ping?
>>
>> Thanks,
>> --
>> Jerome
>>
>> On 05/31/2017 01:21 PM, Jerome Forissier wrote:
>> > tee_drv.h references struct device, but does not include device.h nor
>> > platform_device.h. Therefore, if tee_drv.h is included by some file
>> > that does not pull device.h nor platform_device.h beforehand, we have a
>> > compile warning. Fix this by adding a forward declaration.
>> >
>> > Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>

Acked-by: Arnd Bergmann <arnd@arndb.de>

Do we need this to fix a warning in mainline, in linux-next, or only
in combination with some other patches?

I have not run into this warning in my build testing.

>> >  include/linux/tee_drv.h | 1 +
>> >  1 file changed, 1 insertion(+)
>> >
>> > diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
>> > index 8614713..07bd226 100644
>> > --- a/include/linux/tee_drv.h
>> > +++ b/include/linux/tee_drv.h
>> > @@ -29,6 +29,7 @@
>> >  #define TEE_SHM_DMA_BUF            BIT(1)  /* Memory with dma-buf handle */
>> >  #define TEE_SHM_EXT_DMA_BUF        BIT(2)  /* Memory with dma-buf handle */
>> >
>> > +struct device;
>> >  struct tee_device;
>> >  struct tee_shm;
>> >  struct tee_shm_pool;
>> >
>
> Looks good to me.
>
> Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

Can you pick up the patch in your git tree and send a pull request for
the appropriate release (4.12-fixes or 4.13)?

If you don't expect to send anything else for tee in that release,
you can also forward the patch to arm at kernel.org and ask for
inclusion. If you just reply with the 'Reviewed-by', I would not
expect to have to do anything in the arm-soc tree.

     Arnd

[PATCH] tee: add forward declaration for struct device

[Jerome Forissier]

On 06/14/2017 01:01 PM, Arnd Bergmann wrote:
> On Wed, Jun 14, 2017 at 11:46 AM, Jens Wiklander
> <jens.wiklander@linaro.org> wrote:
>> On Wed, Jun 14, 2017 at 11:39:50AM +0200, Jerome Forissier wrote:
>>> [+Arnd]
>>>
>>> Ping?
>>>
>>> Thanks,
>>> --
>>> Jerome
>>>
>>> On 05/31/2017 01:21 PM, Jerome Forissier wrote:
>>>> tee_drv.h references struct device, but does not include device.h nor
>>>> platform_device.h. Therefore, if tee_drv.h is included by some file
>>>> that does not pull device.h nor platform_device.h beforehand, we have a
>>>> compile warning. Fix this by adding a forward declaration.
>>>>
>>>> Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
> 
> Acked-by: Arnd Bergmann <arnd@arndb.de>
> 
> Do we need this to fix a warning in mainline, in linux-next, or only
> in combination with some other patches?

Only with some other patches.

-- 
Jerome

> I have not run into this warning in my build testing.
> 
>>>>  include/linux/tee_drv.h | 1 +
>>>>  1 file changed, 1 insertion(+)
>>>>
>>>> diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
>>>> index 8614713..07bd226 100644
>>>> --- a/include/linux/tee_drv.h
>>>> +++ b/include/linux/tee_drv.h
>>>> @@ -29,6 +29,7 @@
>>>>  #define TEE_SHM_DMA_BUF            BIT(1)  /* Memory with dma-buf handle */
>>>>  #define TEE_SHM_EXT_DMA_BUF        BIT(2)  /* Memory with dma-buf handle */
>>>>
>>>> +struct device;
>>>>  struct tee_device;
>>>>  struct tee_shm;
>>>>  struct tee_shm_pool;
>>>>
>>
>> Looks good to me.
>>
>> Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
> 
> Can you pick up the patch in your git tree and send a pull request for
> the appropriate release (4.12-fixes or 4.13)?
> 
> If you don't expect to send anything else for tee in that release,
> you can also forward the patch to arm at kernel.org and ask for
> inclusion. If you just reply with the 'Reviewed-by', I would not
> expect to have to do anything in the arm-soc tree.
> 
>      Arnd
> 

[PATCH] tee: add forward declaration for struct device

[Arnd Bergmann]

On Wed, Jun 14, 2017 at 1:06 PM, Jerome Forissier
<jerome.forissier@linaro.org> wrote:
> On 06/14/2017 01:01 PM, Arnd Bergmann wrote:
>> On Wed, Jun 14, 2017 at 11:46 AM, Jens Wiklander
>> <jens.wiklander@linaro.org> wrote:
>>> On Wed, Jun 14, 2017 at 11:39:50AM +0200, Jerome Forissier wrote:
>>>> [+Arnd]
>>>>
>>>> Ping?
>>>>
>>>> Thanks,
>>>> --
>>>> Jerome
>>>>
>>>> On 05/31/2017 01:21 PM, Jerome Forissier wrote:
>>>>> tee_drv.h references struct device, but does not include device.h nor
>>>>> platform_device.h. Therefore, if tee_drv.h is included by some file
>>>>> that does not pull device.h nor platform_device.h beforehand, we have a
>>>>> compile warning. Fix this by adding a forward declaration.
>>>>>
>>>>> Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
>>
>> Acked-by: Arnd Bergmann <arnd@arndb.de>
>>
>> Do we need this to fix a warning in mainline, in linux-next, or only
>> in combination with some other patches?
>
> Only with some other patches.

Ok, in that case, Jens can just queue up the patch in his tree now,
and it will be there in time when other patches get applied on top,
no need to have this in arm-soc by itself.

Thanks,

        Arnd