linux-kernel - Re: [PATCH] drm/amd/display: cleanup extern usage in function definition

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Date:   Mon, 4 Apr 2022 11:57:08 -0400
From:   Harry Wentland <harry.wentland@....com>
To:     Tom Rix <trix@...hat.com>, sunpeng.li@....com,
        Rodrigo.Siqueira@....com, alexander.deucher@....com,
        christian.koenig@....com, Xinhui.Pan@....com, airlied@...ux.ie,
        daniel@...ll.ch, wenjing.liu@....com, waynelin@....com,
        Anson.Jacob@....com, Yu-ting.Shen@....com, keescook@...omium.org,
        nicholas.kazlauskas@....com
Cc:     amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/amd/display: cleanup extern usage in function
 definition



On 2022-04-04 11:43, Tom Rix wrote:
> 
> On 4/4/22 8:22 AM, Harry Wentland wrote:
>>
>> On 2022-04-03 10:21, Tom Rix wrote:
>>> Smatch reports this issue
>>> hdcp1_execution.c:500:29: warning: function
>>>    'mod_hdcp_hdcp1_dp_execution' with external linkage
>>>    has definition
>>>
>> Which branch are you using?
> 
> linux-next from 4/1
> 

Apologies. I was looking at the wrong function.

Reviewed-by: Harry Wentland <harry.wentland@....com>

Harry

> Tom
> 
>>
>> I don't see the 'extern' on
>> https://gitlab.freedesktop.org/agd5f/linux/-/blob/amd-staging-drm-next/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c>>>
>> Harry
>>
>>
>>> The storage-class-specifier extern is not needed in a
>>> definition, so remove it.
>>>
>>> Signed-off-by: Tom Rix <trix@...hat.com>
>>> ---
>>>   drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c | 6 +++---
>>>   1 file changed, 3 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c
>>> index 6ec918af3bff..1ddb4f5eac8e 100644
>>> --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c
>>> +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp1_execution.c
>>> @@ -497,9 +497,9 @@ enum mod_hdcp_status mod_hdcp_hdcp1_execution(struct mod_hdcp *hdcp,
>>>       return status;
>>>   }
>>>   -extern enum mod_hdcp_status mod_hdcp_hdcp1_dp_execution(struct mod_hdcp *hdcp,
>>> -        struct mod_hdcp_event_context *event_ctx,
>>> -        struct mod_hdcp_transition_input_hdcp1 *input)
>>> +enum mod_hdcp_status mod_hdcp_hdcp1_dp_execution(struct mod_hdcp *hdcp,
>>> +                         struct mod_hdcp_event_context *event_ctx,
>>> +                         struct mod_hdcp_transition_input_hdcp1 *input)
>>>   {
>>>       enum mod_hdcp_status status = MOD_HDCP_STATUS_SUCCESS;
>>>   
>