linux-kernel - Re: [PATCH v1 1/3] bus: mhi: core: Remove warnings for missing MODULE

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Date:   Fri, 18 Sep 2020 09:49:05 -0700
From:   bbhatt@...eaurora.org
To:     Jeffrey Hugo <jhugo@...eaurora.org>
Cc:     manivannan.sadhasivam@...aro.org, linux-arm-msm@...r.kernel.org,
        hemantk@...eaurora.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/3] bus: mhi: core: Remove warnings for missing
 MODULE_LICENSE()

On 2020-09-18 07:27, Jeffrey Hugo wrote:
> On 9/17/2020 4:19 PM, Bhaumik Bhatt wrote:
>> When building MHI as a module, missing MODULE_LICENSE() warnings
>> are seen. Avoid them by adding the license and description
>> information for the files where the warnings are seen.
>> 
>> Signed-off-by: Bhaumik Bhatt <bbhatt@...eaurora.org>
>> ---
>>   drivers/bus/mhi/core/boot.c | 3 +++
>>   drivers/bus/mhi/core/main.c | 3 +++
>>   drivers/bus/mhi/core/pm.c   | 3 +++
>>   3 files changed, 9 insertions(+)
>> 
>> diff --git a/drivers/bus/mhi/core/boot.c b/drivers/bus/mhi/core/boot.c
>> index 24422f5..78140cc 100644
>> --- a/drivers/bus/mhi/core/boot.c
>> +++ b/drivers/bus/mhi/core/boot.c
>> @@ -523,3 +523,6 @@ void mhi_fw_load_handler(struct mhi_controller 
>> *mhi_cntrl)
>>   error_alloc_fw_table:
>>   	release_firmware(firmware);
>>   }
>> +
>> +MODULE_LICENSE("GPL v2");
>> +MODULE_DESCRIPTION("MHI Host Interface");
>> diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
>> index 2cff5dd..172026f 100644
>> --- a/drivers/bus/mhi/core/main.c
>> +++ b/drivers/bus/mhi/core/main.c
>> @@ -1533,3 +1533,6 @@ int mhi_poll(struct mhi_device *mhi_dev, u32 
>> budget)
>>   	return ret;
>>   }
>>   EXPORT_SYMBOL_GPL(mhi_poll);
>> +
>> +MODULE_LICENSE("GPL v2");
>> +MODULE_DESCRIPTION("MHI Host Interface");
>> diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c
>> index ce4d969..72c3dbc 100644
>> --- a/drivers/bus/mhi/core/pm.c
>> +++ b/drivers/bus/mhi/core/pm.c
>> @@ -1150,3 +1150,6 @@ void mhi_device_put(struct mhi_device *mhi_dev)
>>   	read_unlock_bh(&mhi_cntrl->pm_lock);
>>   }
>>   EXPORT_SYMBOL_GPL(mhi_device_put);
>> +
>> +MODULE_LICENSE("GPL v2");
>> +MODULE_DESCRIPTION("MHI Host Interface");
>> 
> 
> I would expect you only need to add the MODULE_* once per module, in
> which case main.c is probably the only place that needs it.

Hi Jeff,

I thought so too. This is to fix below warnings seen when building MHI 
as a MODULE:

WARNING: modpost: missing MODULE_LICENSE() in 
drivers/bus/mhi/core/main.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/bus/mhi/core/pm.o
WARNING: modpost: missing MODULE_LICENSE() in 
drivers/bus/mhi/core/boot.o

We've only had those in init.c so far.

Thanks,
Bhaumik

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