From: Lyude Paul <lyude@redhat.com>
To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
nouveau@lists.freedesktop.org, amd-gfx@lists.freedesktop.org,
"Ville Syrjälä" <ville.syrjala@linux.intel.com>,
"Jani Nikula" <jani.nikula@linux.intel.com>,
"Rodrigo Vivi" <rodrigo.vivi@intel.com>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Thierry Reding" <thierry.reding@gmail.com>
Cc: "Stylon Wang" <stylon.wang@amd.com>,
"Mikita Lipski" <mikita.lipski@amd.com>,
"Chris Park" <Chris.Park@amd.com>,
"Eryk Brol" <eryk.brol@amd.com>, "Leo Li" <sunpeng.li@amd.com>,
"Bhawanpreet Lakha" <Bhawanpreet.Lakha@amd.com>,
"Wayne Lin" <Wayne.Lin@amd.com>,
"Rodrigo Siqueira" <Rodrigo.Siqueira@amd.com>,
"open list" <linux-kernel@vger.kernel.org>,
"Nicholas Kazlauskas" <nicholas.kazlauskas@amd.com>,
"Meenakshikumar Somasundaram"
<meenakshikumar.somasundaram@amd.com>,
"David Airlie" <airlied@linux.ie>,
"Aurabindo Pillai" <aurabindo.pillai@amd.com>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Bas Nieuwenhuizen" <bas@basnieuwenhuizen.nl>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Nikola Cornij" <nikola.cornij@amd.com>,
"Harry Wentland" <harry.wentland@amd.com>,
"Christian König" <christian.koenig@amd.com>
Subject: [PATCH v3 01/20] drm/amdgpu: Add error handling to amdgpu_dm_initialize_dp_connector()
Date: Mon, 19 Apr 2021 18:55:03 -0400 [thread overview]
Message-ID: <20210419225523.184856-2-lyude@redhat.com> (raw)
In-Reply-To: <20210419225523.184856-1-lyude@redhat.com>
While working on moving i2c device registration into drm_dp_aux_init() - I
realized that in order to do so we need to make sure that drivers calling
drm_dp_aux_init() handle any errors it could possibly return. In the
process of doing that, I noticed that the majority of AMD's code for DP
connector creation doesn't attempt to do any real error handling.
So, let's fix this and also cleanup amdgpu_dm_initialize_dp_connector()
while we're at it. This way we can handle the error codes from
drm_dp_aux_init().
Signed-off-by: Lyude Paul <lyude@redhat.com>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 29 +++++++-----
.../display/amdgpu_dm/amdgpu_dm_mst_types.c | 44 +++++++++++--------
.../display/amdgpu_dm/amdgpu_dm_mst_types.h | 6 +--
3 files changed, 45 insertions(+), 34 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index a0c8c41e4e57..fc5d315bbb05 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -7608,10 +7608,9 @@ static int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm,
aconnector->i2c = i2c;
res = i2c_add_adapter(&i2c->base);
-
if (res) {
DRM_ERROR("Failed to register hw i2c %d\n", link->link_index);
- goto out_free;
+ goto fail_free;
}
connector_type = to_drm_connector_type(link->connector_signal);
@@ -7625,8 +7624,7 @@ static int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm,
if (res) {
DRM_ERROR("connector_init failed\n");
- aconnector->connector_id = -1;
- goto out_free;
+ goto fail_id;
}
drm_connector_helper_add(
@@ -7643,15 +7641,22 @@ static int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm,
drm_connector_attach_encoder(
&aconnector->base, &aencoder->base);
- if (connector_type == DRM_MODE_CONNECTOR_DisplayPort
- || connector_type == DRM_MODE_CONNECTOR_eDP)
- amdgpu_dm_initialize_dp_connector(dm, aconnector, link->link_index);
-
-out_free:
- if (res) {
- kfree(i2c);
- aconnector->i2c = NULL;
+ if (connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
+ connector_type == DRM_MODE_CONNECTOR_eDP) {
+ res = amdgpu_dm_initialize_dp_connector(dm, aconnector, link->link_index);
+ if (res)
+ goto fail_cleanup;
}
+
+ return 0;
+fail_cleanup:
+ drm_connector_cleanup(&aconnector->base);
+fail_id:
+ aconnector->connector_id = -1;
+fail_free:
+ kfree(i2c);
+ aconnector->i2c = NULL;
+
return res;
}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 73cdb9fe981a..3dee9cce9c9e 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -425,33 +425,39 @@ static const struct drm_dp_mst_topology_cbs dm_mst_cbs = {
.add_connector = dm_dp_add_mst_connector,
};
-void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
- struct amdgpu_dm_connector *aconnector,
- int link_index)
+int amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
+ struct amdgpu_dm_connector *aconnector,
+ int link_index)
{
- aconnector->dm_dp_aux.aux.name =
- kasprintf(GFP_KERNEL, "AMDGPU DM aux hw bus %d",
- link_index);
- aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
- aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
+ struct amdgpu_dm_dp_aux *dm_aux = &aconnector->dm_dp_aux;
+ int ret;
- drm_dp_aux_init(&aconnector->dm_dp_aux.aux);
- drm_dp_cec_register_connector(&aconnector->dm_dp_aux.aux,
- &aconnector->base);
+ dm_aux->aux.name = kasprintf(GFP_KERNEL, "AMDGPU DM aux hw bus %d", link_index);
+ if (!dm_aux->aux.name)
+ return -ENOMEM;
+
+ dm_aux->aux.transfer = dm_dp_aux_transfer;
+ dm_aux->ddc_service = aconnector->dc_link->ddc;
+
+ drm_dp_aux_init(&dm_aux->aux);
+ drm_dp_cec_register_connector(&dm_aux->aux, &aconnector->base);
if (aconnector->base.connector_type == DRM_MODE_CONNECTOR_eDP)
- return;
+ return 0;
aconnector->mst_mgr.cbs = &dm_mst_cbs;
- drm_dp_mst_topology_mgr_init(
- &aconnector->mst_mgr,
- adev_to_drm(dm->adev),
- &aconnector->dm_dp_aux.aux,
- 16,
- 4,
- aconnector->connector_id);
+ ret = drm_dp_mst_topology_mgr_init(&aconnector->mst_mgr, adev_to_drm(dm->adev),
+ &dm_aux->aux, 16, 4, aconnector->connector_id);
+ if (ret)
+ goto unreg_cec;
drm_connector_attach_dp_subconnector_property(&aconnector->base);
+
+ return 0;
+unreg_cec:
+ drm_dp_cec_unregister_connector(&dm_aux->aux);
+ kfree(dm_aux->aux.name);
+ return ret;
}
int dm_mst_get_pbn_divider(struct dc_link *link)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
index b38bd68121ce..cf771ff58bb3 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
@@ -31,9 +31,9 @@ struct amdgpu_dm_connector;
int dm_mst_get_pbn_divider(struct dc_link *link);
-void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
- struct amdgpu_dm_connector *aconnector,
- int link_index);
+int amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
+ struct amdgpu_dm_connector *aconnector,
+ int link_index);
void
dm_dp_create_fake_mst_encoders(struct amdgpu_device *adev);
--
2.30.2
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
next prev parent reply other threads:[~2021-04-19 22:55 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-19 22:55 [PATCH v3 00/20] drm: Use new DRM printk funcs (like drm_dbg_*()) in DP helpers Lyude Paul
2021-04-19 22:55 ` Lyude Paul [this message]
2021-04-21 14:23 ` [PATCH v3 01/20] drm/amdgpu: Add error handling to amdgpu_dm_initialize_dp_connector() Mikita Lipski
2021-04-21 15:22 ` Deucher, Alexander
2021-04-19 22:55 ` [PATCH v3 02/20] drm/dp: Add __no_check to drm_dp_aux_register() Lyude Paul
2021-04-19 22:55 ` [PATCH v3 03/20] drm/dp: Move i2c init to drm_dp_aux_init, add __must_check and fini Lyude Paul
2021-04-19 23:16 ` Ville Syrjälä
2021-04-22 17:18 ` Lyude Paul
2021-04-22 22:33 ` Lyude Paul
2021-04-23 4:11 ` Lyude Paul
2021-04-23 12:39 ` Thierry Reding
2021-04-23 17:53 ` Lyude Paul
2021-04-23 12:38 ` Thierry Reding
2021-04-23 12:34 ` Thierry Reding
2021-04-19 22:55 ` [PATCH v3 04/20] drm/bridge/cdns-mhdp8546: Register DP aux channel with userspace Lyude Paul
2021-04-19 22:55 ` [PATCH v3 05/20] drm/nouveau/kms/nv50-: Move AUX adapter reg to connector late register/early unregister Lyude Paul
2021-04-19 22:55 ` [PATCH v3 06/20] drm/dp: Add backpointer to drm_device in drm_dp_aux Lyude Paul
2021-04-19 22:55 ` [PATCH v3 07/20] drm/dp: Clarify DP AUX registration time Lyude Paul
2021-04-19 22:55 ` [PATCH v3 08/20] drm/dp: Pass drm_dp_aux to drm_dp_link_train_clock_recovery_delay() Lyude Paul
2021-04-19 22:55 ` [PATCH v3 09/20] drm/dp: Pass drm_dp_aux to drm_dp*_link_train_channel_eq_delay() Lyude Paul
2021-04-19 22:55 ` [PATCH v3 10/20] drm/dp: Always print aux channel name in logs Lyude Paul
2021-04-19 22:55 ` [PATCH v3 11/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_detect() Lyude Paul
2021-04-19 22:55 ` [PATCH v3 12/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_set_tmds_output() Lyude Paul
2021-04-19 22:55 ` [PATCH v3 13/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_max_tmds_clock() Lyude Paul
2021-04-19 22:55 ` [PATCH v3 14/20] drm/dp_dual_mode: Pass drm_device to drm_dp_dual_mode_get_tmds_output() Lyude Paul
2021-04-19 22:55 ` [PATCH v3 15/20] drm/dp_dual_mode: Pass drm_device to drm_lspcon_(get|set)_mode() Lyude Paul
2021-04-19 22:55 ` [PATCH v3 16/20] drm/dp_mst: Pass drm_dp_mst_topology_mgr to drm_dp_get_vc_payload_bw() Lyude Paul
2021-04-19 22:55 ` [PATCH v3 17/20] drm/print: Handle potentially NULL drm_devices in drm_dbg_* Lyude Paul
2021-04-19 22:55 ` [PATCH v3 18/20] drm/dp: Convert drm_dp_helper.c to using drm_err/drm_dbg_*() Lyude Paul
2021-04-19 22:55 ` [PATCH v3 19/20] drm/dp_dual_mode: Convert drm_dp_dual_mode_helper.c to using drm_err/drm_dbg_kms() Lyude Paul
2021-04-19 22:55 ` [PATCH v3 20/20] drm/dp_mst: Convert drm_dp_mst_topology.c to drm_err()/drm_dbg*() Lyude Paul
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210419225523.184856-2-lyude@redhat.com \
--to=lyude@redhat.com \
--cc=Bhawanpreet.Lakha@amd.com \
--cc=Chris.Park@amd.com \
--cc=Rodrigo.Siqueira@amd.com \
--cc=Wayne.Lin@amd.com \
--cc=airlied@linux.ie \
--cc=alexander.deucher@amd.com \
--cc=amd-gfx@lists.freedesktop.org \
--cc=aurabindo.pillai@amd.com \
--cc=bas@basnieuwenhuizen.nl \
--cc=christian.koenig@amd.com \
--cc=daniel@ffwll.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=eryk.brol@amd.com \
--cc=harry.wentland@amd.com \
--cc=intel-gfx@lists.freedesktop.org \
--cc=jani.nikula@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=meenakshikumar.somasundaram@amd.com \
--cc=mikita.lipski@amd.com \
--cc=nicholas.kazlauskas@amd.com \
--cc=nikola.cornij@amd.com \
--cc=nouveau@lists.freedesktop.org \
--cc=rodrigo.vivi@intel.com \
--cc=stylon.wang@amd.com \
--cc=sunpeng.li@amd.com \
--cc=thierry.reding@gmail.com \
--cc=tzimmermann@suse.de \
--cc=ville.syrjala@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).