linux-kernel - Re: [PATCH 06/37] drm/vkms/vkms_composer: Fix a few different kerneldoc formatting

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Date:   Mon, 20 Mar 2023 17:09:07 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Melissa Wen <mwen@...lia.com>, Lee Jones <lee@...nel.org>
Cc:     dri-devel@...ts.freedesktop.org,
        Haneen Mohammed <hamohammed.sa@...il.com>,
        Rodrigo Siqueira <rodrigosiqueiramelo@...il.com>,
        linux-kernel@...r.kernel.org, Melissa Wen <melissa.srw@...il.com>
Subject: Re: [PATCH 06/37] drm/vkms/vkms_composer: Fix a few different
 kerneldoc formatting



On 3/20/23 16:46, Melissa Wen wrote:
> On 03/17, Lee Jones wrote:
>> Fixes the following W=1 kernel build warning(s):
>>
>>  drivers/gpu/drm/vkms/vkms_composer.c:41: warning: Function parameter or member 'frame_info' not described in 'pre_mul_alpha_blend'
>>  drivers/gpu/drm/vkms/vkms_composer.c:41: warning: Excess function parameter 'src_frame_info' description in 'pre_mul_alpha_blend'
>>  drivers/gpu/drm/vkms/vkms_composer.c:72: warning: Cannot understand  * @wb_frame_info: The writeback frame buffer metadata
>>
>> Cc: Rodrigo Siqueira <rodrigosiqueiramelo@...il.com>
>> Cc: Melissa Wen <melissa.srw@...il.com>
>> Cc: Haneen Mohammed <hamohammed.sa@...il.com>
>> Cc: Daniel Vetter <daniel@...ll.ch>
>> Cc: David Airlie <airlied@...il.com>
>> Cc: dri-devel@...ts.freedesktop.org
>> Signed-off-by: Lee Jones <lee@...nel.org>
>> ---
>>  drivers/gpu/drm/vkms/vkms_composer.c | 6 ++++--
>>  1 file changed, 4 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c
>> index 8e53fa80742b2..41668eedf4272 100644
>> --- a/drivers/gpu/drm/vkms/vkms_composer.c
>> +++ b/drivers/gpu/drm/vkms/vkms_composer.c
>> @@ -22,7 +22,7 @@ static u16 pre_mul_blend_channel(u16 src, u16 dst, u16 alpha)
>>  
>>  /**
>>   * pre_mul_alpha_blend - alpha blending equation
>> - * @src_frame_info: source framebuffer's metadata
>> + * @frame_info: source framebuffer's metadata
>>   * @stage_buffer: The line with the pixels from src_plane
>>   * @output_buffer: A line buffer that receives all the blends output
>>   *
>> @@ -69,11 +69,13 @@ static void fill_background(const struct pixel_argb_u16 *background_color,
>>  }
>>  
>>  /**
>> - * @wb_frame_info: The writeback frame buffer metadata
>> + * blend
> As we are already here:
> * blend - blend pixels from a given row and calculate crc

 * blend: blend pixels from a given row and calculate CRC

preferably.

> Reviewed-by: Melissa Wen <mwen@...lia.com>
> 
>> + * @wb: The writeback frame buffer metadata
>>   * @crtc_state: The crtc state
>>   * @crc32: The crc output of the final frame
>>   * @output_buffer: A buffer of a row that will receive the result of the blend(s)
>>   * @stage_buffer: The line with the pixels from plane being blend to the output
>> + * @row_size: Size of memory taken up by row data (line_width * pixel_size)
>>   *
>>   * This function blends the pixels (Using the `pre_mul_alpha_blend`)
>>   * from all planes, calculates the crc32 of the output from the former step,
>> -- 
>> 2.40.0.rc1.284.g88254d51c5-goog
>>

-- 
~Randy