On Thu, Feb 25, 2021 at 10:34 PM 'Nick Desaulniers' via Clang Built
Linux <clang-built-linux@xxxxxxxxxxxxxxxx> wrote:
> return parse_edid_cea(aconnector, edid_ext, EDID_LENGTH, vsdb_info) ? i : -ENODEV;
>
> would suffice, but the patch is still fine as is.
Right, I did not want to change more than necessary here, and the
original code already had the extra assignment instead of returning
the value.
> > @@ -9857,8 +9857,8 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
> > }
> > }
> > } else if (edid && amdgpu_dm_connector->dc_sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A) {
> > - hdmi_valid_vsdb_found = parse_hdmi_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info);
> > - if (hdmi_valid_vsdb_found && vsdb_info.freesync_supported) {
> > + i = parse_hdmi_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info);
> > + if (i >= 0 && vsdb_info.freesync_supported) {
>
> reusing `i` here is safe, for now, but reuse of variables like this in
> separate branches like this might not get noticed if the function is
> amended in the future.
>
> > timing = &edid->detailed_timings[i];
> > data = &timing->data.other_data;
The entire point of the patch is that 'i' is in fact used in the following line,
but was lacking an intialization.
Arnd
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