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Fri, 06 Nov 2026 11:40:57 -0800 (PST) Received: from [127.0.1.1] ([2406:b400:21:7ec1:90d0:3395:e0de:2d21]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1b25e4c1df6sm7788930c88.14.2026.11.06.11.40.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Nov 2026 11:40:56 -0800 (PST) From: Vishal Tyagi To: dmitry.torokhov@gmail.com Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH] Revert "Input: synaptics - enable SMBus for HP Elitebook 850 G1" Date: Sat, 07 Nov 2026 01:10:52 +0530 Message-ID: <179399405216.85438.8327280593401118083@gmail.com> User-Agent: git-dispatch/1.0 (Linux x86_64; git-send-email compat) Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 This reverts commit f04f03d3e99bc8f89b6af5debf07ff67d961bc23. Commit f04f03d3e99b ("Input: synaptics - enable SMBus for HP Elitebook 850 G1= ") added PNP ID "SYN3003" to smbus_pnp_ids[] to enable SMBus/InterTouch mode. However, on Haswell-generation HP EliteBooks sharing this touchpad controller (including HP EliteBook 840 G1 and HP EliteBook 850 G1), the touchpad fails to resume after ACPI S3 suspend: rmi4_smbus 0-002c: failed to get SMBus version number! rmi4_f01 rmi4-00.fn01: Resume failed with code -6. rmi4_physical: Failed to resume rmi4-00: -6 Following resume from suspend, the touchpad remains completely unresponsive and dead until a full reboot or manual module reload (modprobe -r psmouse). Falling back to standard PS/2 mode (via synaptics_intertouch=3D0) allows multi-touch gestures (two-finger scrolling, tap-to-click) to function normally while preserving 100% reliable S3 suspend/resume behavior. Revert this commit to prevent this regression on affected hardware. Fixes: f04f03d3e99bc8f89b6af5debf07ff67d961bc23 ("Input: synaptics - enable S= MBus for HP Elitebook 850 G1") Cc: stable@vger.kernel.org Signed-off-by: Vishal Tyagi --- drivers/input/mouse/synaptics.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index a8e2a14..0d1b54a 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -195,7 +195,6 @@ static const char * const smbus_pnp_ids[] =3D { "LEN2058", /* E490 */ "LEN205b", /* T490 */ "LEN2068", /* T14 Gen 1 */ "SYN1221", /* TUXEDO InfinityBook Pro 14 v5 */ - "SYN3003", /* HP EliteBook 850 G1 */ "SYN3015", /* HP EliteBook 840 G2 */ "SYN3052", /* HP EliteBook 840 G4 */ "SYN3221", /* HP 15-ay000 */ --=20