The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 1c22d6ce53280763bcb4cb24d4f71111fff4a526 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2024012735-vaguely-choking-d13a@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..

Possible dependencies:

1c22d6ce5328 ("drm/amd/display: Include udelay when waiting for INBOX0 ACK")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 1c22d6ce53280763bcb4cb24d4f71111fff4a526 Mon Sep 17 00:00:00 2001 From: Alvin Lee alvin.lee2@amd.com Date: Mon, 6 Nov 2023 11:20:15 -0500 Subject: [PATCH] drm/amd/display: Include udelay when waiting for INBOX0 ACK

When waiting for the ACK for INBOX0 message, we have to ensure to include the udelay for proper wait time

Cc: stable@vger.kernel.org # 6.1+ Reviewed-by: Samson Tam samson.tam@amd.com Acked-by: Hamza Mahfooz hamza.mahfooz@amd.com Signed-off-by: Alvin Lee alvin.lee2@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com

diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c index 22fc4ba96def..38360adc53d9 100644 --- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c @@ -1077,6 +1077,7 @@ enum dmub_status dmub_srv_wait_for_inbox0_ack(struct dmub_srv *dmub, uint32_t ti ack = dmub->hw_funcs.read_inbox0_ack_register(dmub); if (ack) return DMUB_STATUS_OK; + udelay(1); } return DMUB_STATUS_TIMEOUT; }