Re: Re: [PATCH] drm/mediatek: cleanup coding style in mediatek a bit

[Chun-Kuang Hu]

Hi, Bernard:

Bernard <bernard@xxxxxxxx> æ 2020å4æ30æ éå äå2:32åéï
>
>
>
> åääïChun-Kuang Hu <chunkuang.hu@xxxxxxxxxx>
> åéææï2020-04-29 22:22:50
> æääïBernard Zhao <bernard@xxxxxxxx>
> æéäïChun-Kuang Hu <chunkuang.hu@xxxxxxxxxx>,Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>,David Airlie <airlied@xxxxxxxx>,Daniel Vetter <daniel@xxxxxxxx>,Matthias Brugger <matthias.bgg@xxxxxxxxx>,DRI Development <dri-devel@xxxxxxxxxxxxxxxxxxxxx>,Linux ARM <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>,"moderated list:ARM/Mediatek SoC support" <linux-mediatek@xxxxxxxxxxxxxxxxxxx>,linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>,opensource.kernel@xxxxxxxx
> äéïRe: [PATCH] drm/mediatek: cleanup coding style in mediatek a bit>Hi, Bernard:
> >
> >Bernard Zhao <bernard@xxxxxxxx> æ 2020å4æ27æ éä äå3:53åéï
> >>
> >> This code change is to make code bit more readable.
> >> Optimise array size align to HDMI macro define.
> >> Add check if len is overange.
> >
> >One patch should just do one thing, but this do three things.
> >So break this into three patches.
> >
> >Regards,
> >Chun-Kuang.
>
> Hi
> This optimization is mainly to make the code a bit readable.
> These modifications are related, main in several related function calls in the same file.
> I was a bit confused that if it is really necessary to change to three separate patch submissions?
>
> Regards
> Bernard
>
> >>
> >> Signed-off-by: Bernard Zhao <bernard@xxxxxxxx>
> >> ---
> >>  drivers/gpu/drm/mediatek/mtk_hdmi.c | 22 +++++++++++-----------
> >>  1 file changed, 11 insertions(+), 11 deletions(-)
> >>
> >> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> >> index ff43a3d80410..40fb5154ed5d 100644
> >> --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
> >> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> >> @@ -311,15 +311,15 @@ static void mtk_hdmi_hw_send_info_frame(struct mtk_hdmi *hdmi, u8 *buffer,
> >>         u8 checksum;
> >>         int ctrl_frame_en = 0;
> >>
> >> -       frame_type = *buffer;
> >> -       buffer += 1;
> >> -       frame_ver = *buffer;
> >> -       buffer += 1;
> >> -       frame_len = *buffer;
> >> -       buffer += 1;
> >> -       checksum = *buffer;
> >> -       buffer += 1;
> >> +       frame_type = *buffer++;
> >> +       frame_ver = *buffer++;
> >> +       frame_len = *buffer++;
> >> +       checksum = *buffer++;

This part looks like cleanup, so keep in this patch.

> >>         frame_data = buffer;
> >> +       if ((frame_len + HDMI_INFOFRAME_HEADER_SIZE) > len) {
> >> +               dev_err(hdmi->dev, "Wrong frame len: %d\n", frame_len;
> >> +               return;

This is error checking, not cleanup the coding style, so move this to
another patch.

> >> +       }
> >>
> >>         dev_dbg(hdmi->dev,
> >>                 "frame_type:0x%x,frame_ver:0x%x,frame_len:0x%x,checksum:0x%x\n",
> >> @@ -982,7 +982,7 @@ static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi,
> >>                                         struct drm_display_mode *mode)
> >>  {
> >>         struct hdmi_avi_infoframe frame;
> >> -       u8 buffer[17];
> >> +       u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];

This is to symbolize the number, symbolization is more than cleanup.

Regards,
Chun-Kuang.

> >>         ssize_t err;
> >>
> >>         err = drm_hdmi_avi_infoframe_from_display_mode(&frame,
> >> @@ -1008,7 +1008,7 @@ static int mtk_hdmi_setup_spd_infoframe(struct mtk_hdmi *hdmi,
> >>                                         const char *product)
> >>  {
> >>         struct hdmi_spd_infoframe frame;
> >> -       u8 buffer[29];
> >> +       u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_SPD_INFOFRAME_SIZE];
> >>         ssize_t err;
> >>
> >>         err = hdmi_spd_infoframe_init(&frame, vendor, product);
> >> @@ -1031,7 +1031,7 @@ static int mtk_hdmi_setup_spd_infoframe(struct mtk_hdmi *hdmi,
> >>  static int mtk_hdmi_setup_audio_infoframe(struct mtk_hdmi *hdmi)
> >>  {
> >>         struct hdmi_audio_infoframe frame;
> >> -       u8 buffer[14];
> >> +       u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
> >>         ssize_t err;
> >>
> >>         err = hdmi_audio_infoframe_init(&frame);
> >> --
> >> 2.26.2
> >>
> >>
> >> _______________________________________________
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> >> Linux-mediatek@xxxxxxxxxxxxxxxxxxx
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>
>
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