This is a note to let you know that I've just added the patch titled
drm/nouveau/kms: Fix failure path for creating DP connectors
to the 5.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-nouveau-kms-fix-failure-path-for-creating-dp-connectors.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ca0367ca5d9216644b41f86348d6661f8d9e32d8 Mon Sep 17 00:00:00 2001
From: Lyude Paul <lyude@xxxxxxxxxx>
Date: Thu, 26 May 2022 16:43:13 -0400
Subject: drm/nouveau/kms: Fix failure path for creating DP connectors
From: Lyude Paul <lyude@xxxxxxxxxx>
commit ca0367ca5d9216644b41f86348d6661f8d9e32d8 upstream.
It looks like that when we moved nouveau over to using drm_dp_aux_init()
and registering it's aux bus during late connector registration, we totally
forgot to fix the failure codepath in nouveau_connector_create() - as it
still seems to assume that drm_dp_aux_init() can fail (it can't).
So, let's fix that and also add a missing check to ensure that we've
properly allocated nv_connector->aux.name while we're at it.
Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
Reviewed-by: David Airlie <airlied@xxxxxxxx>
Fixes: fd43ad9d47e7 ("drm/nouveau/kms/nv50-: Move AUX adapter reg to connector late register/early unregister")
Cc: <stable@xxxxxxxxxxxxxxx> # v5.14+
Link: https://patchwork.freedesktop.org/patch/msgid/20220526204313.656473-1-lyude@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/nouveau/nouveau_connector.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -1361,13 +1361,11 @@ nouveau_connector_create(struct drm_devi
snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x",
dcbe->hasht, dcbe->hashm);
nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL);
- drm_dp_aux_init(&nv_connector->aux);
- if (ret) {
- NV_ERROR(drm, "Failed to init AUX adapter for sor-%04x-%04x: %d\n",
- dcbe->hasht, dcbe->hashm, ret);
+ if (!nv_connector->aux.name) {
kfree(nv_connector);
- return ERR_PTR(ret);
+ return ERR_PTR(-ENOMEM);
}
+ drm_dp_aux_init(&nv_connector->aux);
fallthrough;
default:
funcs = &nouveau_connector_funcs;
Patches currently in stable-queue which might be from lyude@xxxxxxxxxx are
queue-5.19/drm-nouveau-acpi-don-t-print-error-when-we-get-einprogress-from-pm_runtime.patch
queue-5.19/drm-nouveau-fix-another-off-by-one-in-nvbios_addr.patch
queue-5.19/drm-dp-mst-read-the-extended-dpcd-capabilities-during-system-resume.patch
queue-5.19/drm-nouveau-kms-fix-failure-path-for-creating-dp-connectors.patch
queue-5.19/drm-nouveau-don-t-pm_runtime_put_sync-only-pm_runtime_put_autosuspend.patch
