drm/amd/display: Bunch of smatch error and warning fixes in DC

drivers/gpu/drm/amd/amdgpu/../display/dc/basics/log_helpers.c:79
dc_conn_log() error: buffer overflow 'signal_type_info_tbl' 10 <= 10
drivers/gpu/drm/amd/amdgpu/../display/dc/bios/bios_parser.c:266
bios_parser_get_dst_obj() error: uninitialized symbol 'id'.
drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_audio.c:357
dce_aud_az_enable() warn: inconsistent indenting
drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_resource.c:958
dcn10_acquire_idle_pipe_for_layer() error: we previously assumed
'head_pipe' could be null (see line 952)

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/basics/log_helpers.c b/drivers/gpu/drm/amd/display/dc/basics/log_helpers.c
index 785b943..6e43168 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/basics/log_helpers.c
+++ b/drivers/gpu/drm/amd/display/dc/basics/log_helpers.c
@@ -75,6 +75,9 @@ void dc_conn_log(struct dc_context *ctx,
                if (signal == signal_type_info_tbl[i].type)
                        break;
 
+       if (i == NUM_ELEMENTS(signal_type_info_tbl))
+               goto fail;
+
        dm_logger_append(&entry, "[%s][ConnIdx:%d] ",
                        signal_type_info_tbl[i].name,
                        link->link_index);
@@ -96,6 +99,8 @@ void dc_conn_log(struct dc_context *ctx,
 
        dm_logger_append(&entry, "^\n");
        dm_helpers_dc_conn_log(ctx, &entry, event);
+
+fail:
        dm_logger_close(&entry);
 
        va_end(args);

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 aaaebd0..86e6438 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
@@ -249,7 +249,7 @@ static enum bp_result bios_parser_get_dst_obj(struct dc_bios *dcb,
        struct graphics_object_id *dest_object_id)
 {
        uint32_t number;
-       uint16_t *id;
+       uint16_t *id = NULL;
        ATOM_OBJECT *object;
        struct bios_parser *bp = BP_FROM_DCB(dcb);
 
@@ -260,7 +260,7 @@ static enum bp_result bios_parser_get_dst_obj(struct dc_bios *dcb,
 
        number = get_dest_obj_list(bp, object, &id);
 
-       if (number <= index)
+       if (number <= index || !id)
                return BP_RESULT_BADINPUT;
 
        *dest_object_id = object_id_from_bios_object_id(id[index]);

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c b/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
index 81c40f8..0df9ecb 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_audio.c
@@ -352,11 +352,11 @@ void dce_aud_az_enable(struct audio *audio)
        uint32_t value = AZ_REG_READ(AZALIA_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL);
 
        set_reg_field_value(value, 1,
-                       AZALIA_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL,
-                       CLOCK_GATING_DISABLE);
-               set_reg_field_value(value, 1,
-                       AZALIA_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL,
-                       AUDIO_ENABLED);
+                           AZALIA_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL,
+                           CLOCK_GATING_DISABLE);
+       set_reg_field_value(value, 1,
+                           AZALIA_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL,
+                           AUDIO_ENABLED);
 
        AZ_REG_WRITE(AZALIA_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL, value);
        value = AZ_REG_READ(AZALIA_F0_CODEC_PIN_CONTROL_HOT_PLUG_CONTROL);

diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
index 4c4bd72..9fc8f82 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
@@ -912,11 +912,13 @@ static struct pipe_ctx *dcn10_acquire_idle_pipe_for_layer(
        struct pipe_ctx *head_pipe = resource_get_head_pipe_for_stream(res_ctx, stream);
        struct pipe_ctx *idle_pipe = find_idle_secondary_pipe(res_ctx, pool);
 
-       if (!head_pipe)
+       if (!head_pipe) {
                ASSERT(0);
+               return NULL;
+       }
 
        if (!idle_pipe)
-               return false;
+               return NULL;
 
        idle_pipe->stream = head_pipe->stream;
        idle_pipe->stream_res.tg = head_pipe->stream_res.tg;