linux-kernel - [PATCH AUTOSEL 6.6 22/66] drm: panel-orientation-quirks: Add ZOTAC Gaming Zone

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20250601233744.3514795-22-sashal@kernel.org>
Date: Sun,  1 Jun 2025 19:36:59 -0400
From: Sasha Levin <sashal@...nel.org>
To: patches@...ts.linux.dev,
	stable@...r.kernel.org
Cc: Vicki Pfau <vi@...rift.com>,
	Hans de Goede <hdegoede@...hat.com>,
	Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
	Sasha Levin <sashal@...nel.org>,
	maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org,
	tzimmermann@...e.de,
	airlied@...il.com,
	simona@...ll.ch,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH AUTOSEL 6.6 22/66] drm: panel-orientation-quirks: Add ZOTAC Gaming Zone

From: Vicki Pfau <vi@...rift.com>

[ Upstream commit 96c85e428ebaeacd2c640eba075479ab92072ccd ]

Add a panel orientation quirk for the ZOTAC Gaming Zone handheld gaming device.

Signed-off-by: Vicki Pfau <vi@...rift.com>
Reviewed-by: Hans de Goede <hdegoede@...hat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250313211643.860786-2-vi@endrift.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---

**YES** This commit should be backported to stable kernel trees.
**Extensive Analysis:** **1. Pattern Matching with Historical Commits:**
The commit follows an identical pattern to all the similar commits
marked as "Backport Status: YES" in the reference examples: - GPD Win3
(YES): Added DMI quirk for handheld gaming device with specific
vendor/product matching - OrangePi Neo (YES): Added DMI quirk for gaming
handheld with same pattern - GPD Win Mini (YES): Added gaming device
quirk with identical structure - GPD Win Max (YES): Added gaming device
quirk following same format **2. Code Analysis:** The change is
extremely minimal and safe: ```c + }, { /bin /bin.usr-is-merged /boot
/dev /etc /home /init /lib /lib.usr-is-merged /lib64 /lost+found /media
/mnt /opt /proc /root /run /sbin /sbin.usr-is-merged /snap /srv /sys
/tmp /usr /var ZOTAC Gaming Zone model/ prompt/ src/ target/ + .matches
= { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ZOTAC"), +
DMI_EXACT_MATCH(DMI_BOARD_NAME, "G0A1W"), + }, + .driver_data = (void
*)&lcd1080x1920_leftside_up, ``` This adds exactly 6 lines to the
`orientation_data[]` array in
`drivers/gpu/drm/drm_panel_orientation_quirks.c:500`. The change: - Uses
existing, well-tested infrastructure (`lcd1080x1920_leftside_up` data
structure already defined at line 120-124) - Employs standard DMI
matching with `DMI_EXACT_MATCH()` for precise device identification -
References an existing orientation configuration, introducing zero new
logic - Is completely isolated and cannot affect other devices due to
highly specific DMI matching **3. Bug Fix Nature:** This addresses a
real user-affecting bug - incorrect screen orientation on ZOTAC Gaming
Zone handhelds. Without this quirk: - The display appears rotated
incorrectly - Users experience poor usability with graphics rotated 90
degrees - Gaming on the device is significantly impacted **4. Risk
Assessment:** - **Minimal regression risk**: The DMI matching is highly
specific (`DMI_SYS_VENDOR="ZOTAC"` AND `DMI_BOARD_NAME="G0A1W"`) - **No
architectural changes**: Uses existing quirk framework - **No new
features**: Pure bug fix for hardware support - **Contained scope**:
Only affects this specific ZOTAC device model **5. Stable Tree
Compliance:** ✅ **Important bug fix**: Fixes screen orientation for
users ✅ **Small and contained**: 6-line addition using existing
infrastructure ✅ **No side effects**: Cannot impact other devices due to
specific DMI matching ✅ **No architectural changes**: Pure data addition
to existing quirk table ✅ **Critical subsystem**: Display orientation
affects basic usability ✅ **Follows established pattern**: Identical to
other gaming handheld quirks that were backported **6. Historical
Precedent:** All similar gaming handheld orientation quirks in the
reference examples were marked "Backport Status: YES", establishing
clear precedent that these types of device-specific orientation fixes
are appropriate for stable backporting. **7. User Impact:** Gaming
handhelds are consumer devices where display orientation directly
impacts usability. Users of ZOTAC Gaming Zone devices currently
experience a rotated display, making the device difficult or impossible
to use properly until this fix is applied. The commit perfectly matches
the stable kernel criteria: it's a small, important bug fix with minimal
risk that improves hardware support for end users.

 drivers/gpu/drm/drm_panel_orientation_quirks.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/drm_panel_orientation_quirks.c b/drivers/gpu/drm/drm_panel_orientation_quirks.c
index 036b095c98882..c2a6b4495ae12 100644
--- a/drivers/gpu/drm/drm_panel_orientation_quirks.c
+++ b/drivers/gpu/drm/drm_panel_orientation_quirks.c
@@ -517,6 +517,12 @@ static const struct dmi_system_id orientation_data[] = {
 		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"),
 		},
 		.driver_data = (void *)&lcd800x1280_rightside_up,
+	}, {	/* ZOTAC Gaming Zone */
+		.matches = {
+		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ZOTAC"),
+		  DMI_EXACT_MATCH(DMI_BOARD_NAME, "G0A1W"),
+		},
+		.driver_data = (void *)&lcd1080x1920_leftside_up,
 	}, {	/* One Mix 2S (generic strings, also match on bios date) */
 		.matches = {
 		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
-- 
2.39.5