From 70c5349e0aec6c7dca48f4b9a395607f759a1a61 Mon Sep 17 00:00:00 2001 From: Aric Cyr Date: Wed, 10 Oct 2018 19:02:48 -0400 Subject: [PATCH 0725/2940] drm/amd/display: Fix up coverity issues [Why] Coverity found various high-impact issues that need resolving. [How] Fix some buffer overruns and uninitialized variables. Signed-off-by: Aric Cyr Reviewed-by: Tony Cheng Acked-by: Leo Li Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/bios/bios_parser.c | 2 +- drivers/gpu/drm/amd/display/dc/core/dc_debug.c | 7 +++---- .../gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 6 +++--- 3 files changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c index 0e1dc1b1a48d..c2ab026aee91 100644 --- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c +++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c @@ -2030,7 +2030,7 @@ static uint32_t get_src_obj_list(struct bios_parser *bp, ATOM_OBJECT *object, static struct device_id device_type_from_device_id(uint16_t device_id) { - struct device_id result_device_id; + struct device_id result_device_id = {0}; switch (device_id) { case ATOM_DEVICE_LCD1_SUPPORT: diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_debug.c b/drivers/gpu/drm/amd/display/dc/core/dc_debug.c index caece7c13bc6..830235d460dc 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_debug.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_debug.c @@ -311,7 +311,7 @@ void context_timing_trace( { int i; struct dc *core_dc = dc; - int h_pos[MAX_PIPES], v_pos[MAX_PIPES]; + int h_pos[MAX_PIPES] = {0}, v_pos[MAX_PIPES] = {0}; struct crtc_position position; unsigned int underlay_idx = core_dc->res_pool->underlay_pipe_index; DC_LOGGER_INIT(dc->ctx->logger); @@ -322,8 +322,7 @@ void context_timing_trace( /* get_position() returns CRTC vertical/horizontal counter * hence not applicable for underlay pipe */ - if (pipe_ctx->stream == NULL - || pipe_ctx->pipe_idx == underlay_idx) + if (pipe_ctx->stream == NULL || pipe_ctx->pipe_idx == underlay_idx) continue; pipe_ctx->stream_res.tg->funcs->get_position(pipe_ctx->stream_res.tg, &position); @@ -333,7 +332,7 @@ void context_timing_trace( for (i = 0; i < core_dc->res_pool->pipe_count; i++) { struct pipe_ctx *pipe_ctx = &res_ctx->pipe_ctx[i]; - if (pipe_ctx->stream == NULL) + if (pipe_ctx->stream == NULL || pipe_ctx->pipe_idx == underlay_idx) continue; TIMING_TRACE("OTG_%d H_tot:%d V_tot:%d H_pos:%d V_pos:%d\n", diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index 3376b4436b7f..76240a28f467 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -548,14 +548,14 @@ dce110_translate_regamma_to_hw_format(const struct dc_transfer_func *output_tf, regamma_params->hw_points_num = hw_points; - i = 1; - for (k = 0; k < 16 && i < 16; k++) { + k = 0; + for (i = 1; i < 16; i++) { if (seg_distr[k] != -1) { regamma_params->arr_curve_points[k].segments_num = seg_distr[k]; regamma_params->arr_curve_points[i].offset = regamma_params->arr_curve_points[k].offset + (1 << seg_distr[k]); } - i++; + k++; } if (seg_distr[k] != -1) -- 2.17.1