From ea6309fcbdb995e97c5c18869d361155b95eb5e1 Mon Sep 17 00:00:00 2001 From: Harry Wentland Date: Fri, 10 Nov 2017 20:17:03 -0500 Subject: [PATCH 2887/4131] drm/amd/display: Fix potential mem leak in DC construct Found by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:506 construct() warn: possible memory leak of 'dc_ctx' drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:506 construct() warn: possible memory leak of 'dc_vbios' drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:506 construct() warn: possible memory leak of 'dcn_ip' drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:506 construct() warn: possible memory leak of 'dcn_soc' Signed-off-by: Harry Wentland Reviewed-by: Tony Cheng Acked-by: Harry Wentland --- drivers/gpu/drm/amd/display/dc/core/dc.c | 34 +++++++++++++++++--------------- 1 file changed, 18 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index f71a04a..f1467192 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -283,19 +283,17 @@ static bool construct(struct dc *dc, const struct dc_init_data *init_params) { struct dal_logger *logger; - struct dc_context *dc_ctx = kzalloc(sizeof(*dc_ctx), GFP_KERNEL); - struct bw_calcs_dceip *dc_dceip = kzalloc(sizeof(*dc_dceip), - GFP_KERNEL); - struct bw_calcs_vbios *dc_vbios = kzalloc(sizeof(*dc_vbios), - GFP_KERNEL); + struct dc_context *dc_ctx; + struct bw_calcs_dceip *dc_dceip; + struct bw_calcs_vbios *dc_vbios; #ifdef CONFIG_DRM_AMD_DC_DCN1_0 - struct dcn_soc_bounding_box *dcn_soc = kzalloc(sizeof(*dcn_soc), - GFP_KERNEL); - struct dcn_ip_params *dcn_ip = kzalloc(sizeof(*dcn_ip), GFP_KERNEL); + struct dcn_soc_bounding_box *dcn_soc; + struct dcn_ip_params *dcn_ip; #endif enum dce_version dc_version = DCE_VERSION_UNKNOWN; + dc_dceip = kzalloc(sizeof(*dc_dceip), GFP_KERNEL); if (!dc_dceip) { dm_error("%s: failed to create dceip\n", __func__); goto fail; @@ -303,6 +301,7 @@ static bool construct(struct dc *dc, dc->bw_dceip = dc_dceip; + dc_vbios = kzalloc(sizeof(*dc_vbios), GFP_KERNEL); if (!dc_vbios) { dm_error("%s: failed to create vbios\n", __func__); goto fail; @@ -310,6 +309,7 @@ static bool construct(struct dc *dc, dc->bw_vbios = dc_vbios; #ifdef CONFIG_DRM_AMD_DC_DCN1_0 + dcn_soc = kzalloc(sizeof(*dcn_soc), GFP_KERNEL); if (!dcn_soc) { dm_error("%s: failed to create dcn_soc\n", __func__); goto fail; @@ -317,6 +317,7 @@ static bool construct(struct dc *dc, dc->dcn_soc = dcn_soc; + dcn_ip = kzalloc(sizeof(*dcn_ip), GFP_KERNEL); if (!dcn_ip) { dm_error("%s: failed to create dcn_ip\n", __func__); goto fail; @@ -325,11 +326,18 @@ static bool construct(struct dc *dc, dc->dcn_ip = dcn_ip; #endif + dc_ctx = kzalloc(sizeof(*dc_ctx), GFP_KERNEL); if (!dc_ctx) { dm_error("%s: failed to create ctx\n", __func__); goto fail; } + dc_ctx->cgs_device = init_params->cgs_device; + dc_ctx->driver_context = init_params->driver; + dc_ctx->dc = dc; + dc_ctx->asic_id = init_params->asic_id; + dc->ctx = dc_ctx; + dc->current_state = dc_create_state(); if (!dc->current_state) { @@ -337,11 +345,6 @@ static bool construct(struct dc *dc, goto fail; } - dc_ctx->cgs_device = init_params->cgs_device; - dc_ctx->driver_context = init_params->driver; - dc_ctx->dc = dc; - dc_ctx->asic_id = init_params->asic_id; - /* Create logger */ logger = dal_logger_create(dc_ctx, init_params->log_mask); @@ -351,11 +354,10 @@ static bool construct(struct dc *dc, goto fail; } dc_ctx->logger = logger; - dc->ctx = dc_ctx; - dc->ctx->dce_environment = init_params->dce_environment; + dc_ctx->dce_environment = init_params->dce_environment; dc_version = resource_parse_asic_id(init_params->asic_id); - dc->ctx->dce_version = dc_version; + dc_ctx->dce_version = dc_version; #if defined(CONFIG_DRM_AMD_DC_FBC) dc->ctx->fbc_gpu_addr = init_params->fbc_gpu_addr; -- 2.7.4