drm/amd/display: Fix multiple memory leaks reported by coverity

coccinelle patch used:

@@ expression enc1,vpg,afmt; @@
-       if (!enc1 || !vpg || !afmt)
+       if (!enc1 || !vpg || !afmt) {
+               kfree(enc1);
+               kfree(vpg);
+               kfree(afmt);
                return NULL;
+       }

Addresses-Coverity-ID: 1466017: ("Resource leaks")

Reviewed-by: Aurabindo Jayamohanan Pillai <Aurabindo.Pillai@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
index 2feffe7..3a8a321 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c
@@ -1164,8 +1164,12 @@ struct stream_encoder *dcn30_stream_encoder_create(
        vpg = dcn30_vpg_create(ctx, vpg_inst);
        afmt = dcn30_afmt_create(ctx, afmt_inst);
 
-       if (!enc1 || !vpg || !afmt)
+       if (!enc1 || !vpg || !afmt) {
+               kfree(enc1);
+               kfree(vpg);
+               kfree(afmt);
                return NULL;
+       }
 
        dcn30_dio_stream_encoder_construct(enc1, ctx, ctx->dc_bios,
                                        eng_id, vpg, afmt,

diff --git a/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c b/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c
index 912285f..73b8fcb 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c
@@ -1195,8 +1195,12 @@ struct stream_encoder *dcn301_stream_encoder_create(
        vpg = dcn301_vpg_create(ctx, vpg_inst);
        afmt = dcn301_afmt_create(ctx, afmt_inst);
 
-       if (!enc1 || !vpg || !afmt)
+       if (!enc1 || !vpg || !afmt) {
+               kfree(enc1);
+               kfree(vpg);
+               kfree(afmt);
                return NULL;
+       }
 
        dcn30_dio_stream_encoder_construct(enc1, ctx, ctx->dc_bios,
                                        eng_id, vpg, afmt,

diff --git a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
index 5cd55e8..fcf96cf 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c
@@ -542,8 +542,12 @@ static struct stream_encoder *dcn302_stream_encoder_create(enum engine_id eng_id
        vpg = dcn302_vpg_create(ctx, vpg_inst);
        afmt = dcn302_afmt_create(ctx, afmt_inst);
 
-       if (!enc1 || !vpg || !afmt)
+       if (!enc1 || !vpg || !afmt) {
+               kfree(enc1);
+               kfree(vpg);
+               kfree(afmt);
                return NULL;
+       }
 
        dcn30_dio_stream_encoder_construct(enc1, ctx, ctx->dc_bios, eng_id, vpg, afmt, &stream_enc_regs[eng_id],
                        &se_shift, &se_mask);

diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
index 91cbc09..e0b9366 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c
@@ -1366,8 +1366,12 @@ static struct stream_encoder *dcn31_stream_encoder_create(
        vpg = dcn31_vpg_create(ctx, vpg_inst);
        afmt = dcn31_afmt_create(ctx, afmt_inst);
 
-       if (!enc1 || !vpg || !afmt)
+       if (!enc1 || !vpg || !afmt) {
+               kfree(enc1);
+               kfree(vpg);
+               kfree(afmt);
                return NULL;
+       }
 
        dcn30_dio_stream_encoder_construct(enc1, ctx, ctx->dc_bios,
                                        eng_id, vpg, afmt,
@@ -1412,8 +1416,12 @@ static struct hpo_dp_stream_encoder *dcn31_hpo_dp_stream_encoder_create(
        vpg = dcn31_vpg_create(ctx, vpg_inst);
        apg = dcn31_apg_create(ctx, apg_inst);
 
-       if (!hpo_dp_enc31 || !vpg || !apg)
+       if (!hpo_dp_enc31 || !vpg || !apg) {
+               kfree(hpo_dp_enc31);
+               kfree(vpg);
+               kfree(apg);
                return NULL;
+       }
 
        dcn31_hpo_dp_stream_encoder_construct(hpo_dp_enc31, ctx, ctx->dc_bios,
                                        hpo_dp_inst, eng_id, vpg, apg,