drm/amd/display: Add check for num of entries in gamma
This check avoids potential bugs related to gamma. Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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@ -1580,7 +1580,8 @@ bool mod_color_calculate_degamma_params(struct dc_transfer_func *input_tf,
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/* we can use hardcoded curve for plain SRGB TF */
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/* we can use hardcoded curve for plain SRGB TF */
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if (input_tf->type == TF_TYPE_PREDEFINED &&
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if (input_tf->type == TF_TYPE_PREDEFINED &&
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input_tf->tf == TRANSFER_FUNCTION_SRGB &&
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input_tf->tf == TRANSFER_FUNCTION_SRGB &&
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(!mapUserRamp && ramp->type == GAMMA_RGB_256))
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(!mapUserRamp &&
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(ramp->type == GAMMA_RGB_256 || ramp->num_entries == 0)))
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return true;
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return true;
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input_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
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input_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
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