This is a note to let you know that I've just added the patch titled
drm/nouveau/kms/nv50-: init hpd_irq_lock for PIOR DP
to the 6.4-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-nv50-init-hpd_irq_lock-for-pior-dp.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ea293f823a8805735d9e00124df81a8f448ed1ae Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@xxxxxxxxxx>
Date: Wed, 19 Jul 2023 14:40:51 +1000
Subject: drm/nouveau/kms/nv50-: init hpd_irq_lock for PIOR DP
From: Ben Skeggs <bskeggs@xxxxxxxxxx>
commit ea293f823a8805735d9e00124df81a8f448ed1ae upstream.
Fixes OOPS on boards with ANX9805 DP encoders.
Cc: stable@xxxxxxxxxxxxxxx # 6.4+
Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx>
Reviewed-by: Karol Herbst <kherbst@xxxxxxxxxx>
Signed-off-by: Karol Herbst <kherbst@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20230719044051.6975-3-skeggsb@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/nouveau/dispnv50/disp.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -1873,6 +1873,8 @@ nv50_pior_destroy(struct drm_encoder *en
nvif_outp_dtor(&nv_encoder->outp);
drm_encoder_cleanup(encoder);
+
+ mutex_destroy(&nv_encoder->dp.hpd_irq_lock);
kfree(encoder);
}
@@ -1917,6 +1919,8 @@ nv50_pior_create(struct drm_connector *c
nv_encoder->i2c = ddc;
nv_encoder->aux = aux;
+ mutex_init(&nv_encoder->dp.hpd_irq_lock);
+
encoder = to_drm_encoder(nv_encoder);
encoder->possible_crtcs = dcbe->heads;
encoder->possible_clones = 0;
Patches currently in stable-queue which might be from bskeggs@xxxxxxxxxx are
queue-6.4/drm-nouveau-kms-nv50-init-hpd_irq_lock-for-pior-dp.patch
queue-6.4/drm-nouveau-i2c-fix-number-of-aux-event-slots.patch
queue-6.4/drm-nouveau-disp-pior-dp-uses-gpio-for-hpd-not-pmgr-aux-interrupts.patch
