This is a note to let you know that I've just added the patch titled
drm/amd/display: No display after resume from WB/CB
to the 5.15-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-amd-display-no-display-after-resume-from-wb-cb.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a6e1775da04ab042bc9e2e42399fa25714c253da Mon Sep 17 00:00:00 2001
From: Tsung-hua Lin <Tsung-hua.Lin@xxxxxxx>
Date: Wed, 9 Nov 2022 12:54:22 +0800
Subject: drm/amd/display: No display after resume from WB/CB
From: Tsung-hua Lin <Tsung-hua.Lin@xxxxxxx>
commit a6e1775da04ab042bc9e2e42399fa25714c253da upstream.
[why]
First MST sideband message returns AUX_RET_ERROR_HPD_DISCON
on certain intel platform. Aux transaction considered failure
if HPD unexpected pulled low. The actual aux transaction success
in such case, hence do not return error.
[how]
Not returning error when AUX_RET_ERROR_HPD_DISCON detected
on the first sideband message.
v2: squash in fix (Alex)
Reviewed-by: Jerry Zuo <Jerry.Zuo@xxxxxxx>
Acked-by: Brian Chang <Brian.Chang@xxxxxxx>
Signed-off-by: Tsung-hua Lin <Tsung-hua.Lin@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 37 ++++++++++++++++++++++
1 file changed, 37 insertions(+)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1374,7 +1374,44 @@ static const struct dmi_system_id hpd_di
DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3460"),
},
},
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Tower Plus 7010"),
+ },
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Tower 7010"),
+ },
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex SFF Plus 7010"),
+ },
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex SFF 7010"),
+ },
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Micro Plus 7010"),
+ },
+ },
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Micro 7010"),
+ },
+ },
{}
+ /* TODO: refactor this from a fixed table to a dynamic option */
};
static void retrieve_dmi_info(struct amdgpu_display_manager *dm)
Patches currently in stable-queue which might be from Tsung-hua.Lin@xxxxxxx are
queue-5.15/drm-amd-display-no-display-after-resume-from-wb-cb.patch
