Since icc-common.c can be compiled as module, add the missing
MODULE_LICENSE to avoid compile errors.

Fixes: cb4805b5a5e4 ("interconnect: qcom: Move qcom_icc_xlate_extended() to a common file")
Signed-off-by: Huang Yiwei <quic_hyiwei@quicinc.com>
---
 drivers/interconnect/qcom/icc-common.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/interconnect/qcom/icc-common.c b/drivers/interconnect/qcom/icc-common.c
index 0822ce207b5d..f27f4fdc4531 100644
--- a/drivers/interconnect/qcom/icc-common.c
+++ b/drivers/interconnect/qcom/icc-common.c
@@ -5,6 +5,7 @@
 
 #include <linux/of.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 #include "icc-common.h"
 
@@ -32,3 +33,5 @@ struct icc_node_data *qcom_icc_xlate_extended(struct of_phandle_args *spec, void
 	return ndata;
 }
 EXPORT_SYMBOL_GPL(qcom_icc_xlate_extended);
+
+MODULE_LICENSE("GPL");
-- 
2.17.1

Hi Yiwei,

On Tue, Sep 13, 2022 at 02:27:21PM +0800, Huang Yiwei wrote:
> Since icc-common.c can be compiled as module, add the missing
> MODULE_LICENSE to avoid compile errors.

Just curious how you can enable config INTERCONNECT_QCOM as "m"
(module)?

I checked the config INTERCONNECT_QCOM which is dependent on
INTERCONNECT, and INTERCONNECT has below dependency:

  - DRM_TEGRA [=n] && HAS_IOMEM [=y] && (ARCH_TEGRA [=y] || ARM && COMPILE_TEST [=n]) && COMMON_CLK [=y] && DRM [=m] && OF [=y]
  - TEGRA_MC [=n] && MEMORY [=y] && (ARCH_TEGRA [=y] || COMPILE_TEST [=n] && COMMON_CLK [=y])

Seems to me, it's impossible to enable INTERCONNECT as "m" because the
dependency ARCH_TEGRA/OF/COMMON_CLK cannot be configured as "m".

Thanks,
Leo

Hi Leo,

On 9/13/2022 Tue 15:08, Leo Yan wrote:
> Hi Yiwei,
> 
> On Tue, Sep 13, 2022 at 02:27:21PM +0800, Huang Yiwei wrote:
>> Since icc-common.c can be compiled as module, add the missing
>> MODULE_LICENSE to avoid compile errors.
> 
> Just curious how you can enable config INTERCONNECT_QCOM as "m"
> (module)?
> 
> I checked the config INTERCONNECT_QCOM which is dependent on
> INTERCONNECT, and INTERCONNECT has below dependency:
> 
>    - DRM_TEGRA [=n] && HAS_IOMEM [=y] && (ARCH_TEGRA [=y] || ARM && COMPILE_TEST [=n]) && COMMON_CLK [=y] && DRM [=m] && OF [=y]
>    - TEGRA_MC [=n] && MEMORY [=y] && (ARCH_TEGRA [=y] || COMPILE_TEST [=n] && COMMON_CLK [=y])
> 
> Seems to me, it's impossible to enable INTERCONNECT as "m" because the
> dependency ARCH_TEGRA/OF/COMMON_CLK cannot be configured as "m".
> 
> Thanks,
> Leo
> 
Found the problem, INTERCONNECT_QCOM is modified to tristate internally
so we can compile it as a module, and the new added icc-common.c uses
INTERCONNECT_QCOM config to compile, then cause the problem. So shall we
change INTERCONNECT_QCOM config to tristate?

Thanks,
Yiwei

Changed to Bjorn's updated email.

On Tue, Sep 13, 2022 at 04:30:50PM +0800, Huang Yiwei wrote:
> Hi Leo,
> 
> On 9/13/2022 Tue 15:08, Leo Yan wrote:
> > Hi Yiwei,
> > 
> > On Tue, Sep 13, 2022 at 02:27:21PM +0800, Huang Yiwei wrote:
> > > Since icc-common.c can be compiled as module, add the missing
> > > MODULE_LICENSE to avoid compile errors.
> > 
> > Just curious how you can enable config INTERCONNECT_QCOM as "m"
> > (module)?
> > 
> > I checked the config INTERCONNECT_QCOM which is dependent on
> > INTERCONNECT, and INTERCONNECT has below dependency:
> > 
> >    - DRM_TEGRA [=n] && HAS_IOMEM [=y] && (ARCH_TEGRA [=y] || ARM && COMPILE_TEST [=n]) && COMMON_CLK [=y] && DRM [=m] && OF [=y]
> >    - TEGRA_MC [=n] && MEMORY [=y] && (ARCH_TEGRA [=y] || COMPILE_TEST [=n] && COMMON_CLK [=y])
> > 
> > Seems to me, it's impossible to enable INTERCONNECT as "m" because the
> > dependency ARCH_TEGRA/OF/COMMON_CLK cannot be configured as "m".
> > 
> > Thanks,
> > Leo
> > 
> Found the problem, INTERCONNECT_QCOM is modified to tristate internally
> so we can compile it as a module, and the new added icc-common.c uses
> INTERCONNECT_QCOM config to compile, then cause the problem.

Thanks for confirmation, Yiwei.

> So shall we change INTERCONNECT_QCOM config to tristate?

I personally think modularization is the right thing to do; to avoid
misleading you, I would leave your question to interconnect
maintainers.

Thanks,
Leo

Hi Yiwei,

On 13.09.22 13:06, Leo Yan wrote:
> Changed to Bjorn's updated email.
> 
> On Tue, Sep 13, 2022 at 04:30:50PM +0800, Huang Yiwei wrote:
>> Hi Leo,
>>
>> On 9/13/2022 Tue 15:08, Leo Yan wrote:
>>> Hi Yiwei,
>>>
>>> On Tue, Sep 13, 2022 at 02:27:21PM +0800, Huang Yiwei wrote:
>>>> Since icc-common.c can be compiled as module, add the missing
>>>> MODULE_LICENSE to avoid compile errors.
>>>
>>> Just curious how you can enable config INTERCONNECT_QCOM as "m"
>>> (module)?
>>>
>>> I checked the config INTERCONNECT_QCOM which is dependent on
>>> INTERCONNECT, and INTERCONNECT has below dependency:
>>>
>>>     - DRM_TEGRA [=n] && HAS_IOMEM [=y] && (ARCH_TEGRA [=y] || ARM && COMPILE_TEST [=n]) && COMMON_CLK [=y] && DRM [=m] && OF [=y]
>>>     - TEGRA_MC [=n] && MEMORY [=y] && (ARCH_TEGRA [=y] || COMPILE_TEST [=n] && COMMON_CLK [=y])
>>>
>>> Seems to me, it's impossible to enable INTERCONNECT as "m" because the
>>> dependency ARCH_TEGRA/OF/COMMON_CLK cannot be configured as "m".
>>>
>>> Thanks,
>>> Leo
>>>
>> Found the problem, INTERCONNECT_QCOM is modified to tristate internally
>> so we can compile it as a module, and the new added icc-common.c uses
>> INTERCONNECT_QCOM config to compile, then cause the problem.
> 
> Thanks for confirmation, Yiwei.
> 
>> So shall we change INTERCONNECT_QCOM config to tristate?
> 
> I personally think modularization is the right thing to do; to avoid
> misleading you, I would leave your question to interconnect
> maintainers.

Thanks for clarifying! It sounds like the right approach. So this should
be a single patch that allows icc-common.c to be compiled as a module and
also adds MODULE_LICENSE where needed to avoid any compile errors.

Thanks,
Georgi