Hello SivapiriyanKumarasamy,
This is a semi-automatic email about new static checker warnings.
The patch e1e8a020c6b8: "drm/amd/display: Add support for Freesync 2
HDR and Content to Display Mapping" from Sep 11, 2018, leads to the
following Smatch complaint:
drivers/gpu/drm/amd/amdgpu/../display/modules/color/color_gamma.c:826
build_freesync_hdr()
warn: variable dereferenced before check 'fs_params' (see line 816)
drivers/gpu/drm/amd/amdgpu/../display/modules/color/color_gamma.c
815 struct fixed31_32 scaledX1 = dc_fixpt_zero;
816 struct fixed31_32 max_display =
dc_fixpt_from_int(fs_params->max_display);
^^^^^^^^^^^^^^^^^^^^^
817 struct fixed31_32 min_display =
dc_fixpt_from_fraction(fs_params->min_display, 10000);
^^^^^^^^^^^^^^^^^^^^^
818 struct fixed31_32 max_content =
dc_fixpt_from_int(fs_params->max_content);
819 struct fixed31_32 min_content =
dc_fixpt_from_fraction(fs_params->min_content, 10000);
820 struct fixed31_32 clip = dc_fixpt_one;
821 struct fixed31_32 output;
822 bool use_eetf = false;
823 bool is_clipped = false;
824 struct fixed31_32 sdr_white_level =
dc_fixpt_from_int(fs_params->sdr_white_level);
825
826 if (fs_params == NULL || fs_params->max_content == 0 ||
^^^^^^^^^^^^^^^^^
Too late.
827 fs_params->max_display == 0)
828 return false;
regards,
dan carpenter
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