From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 73171421EFD; Wed, 4 Feb 2026 14:56:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770216984; cv=none; b=UAzsesO5mtU0pcLDHU2QV3xXGRjhRJUsqi9VMAU83vS6l1B+cY+MpAYQhVaUV+A4JJHQq/4wWb5GyYAtAttJ9EMbfRvR6141q0vBLWvPgW324z6U0zQCk1gEeDzziVmAkyrV/xj3B24qR2uJBlSn+3IysNr350EfVNrUoqz/brU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770216984; c=relaxed/simple; bh=rkXjZ4r/zRXRBZZHpKpG6oMLYVHz0gDj4VrHdQ0ox8Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=I/6VpXZxSdy7gRP7sKigd2cZqeHkPz9qMv/w9iyTrgqrSStf4UgG/BA4/s+PXrP2Mg+j0+swbVtrllJo7EkKPWZNDLz5oo4F22pV1OYCSZ9vCVcGkuiMCllo8g2etvYeWCbfuh72L7GHntT3JCbtfmD07a4e65W7bgpI/JUaOQo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Mz76QZXc; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Mz76QZXc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DA900C4CEF7; Wed, 4 Feb 2026 14:56:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1770216984; bh=rkXjZ4r/zRXRBZZHpKpG6oMLYVHz0gDj4VrHdQ0ox8Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Mz76QZXch40Q7dkWwIqs/6qjkjOYbXDhfjAaU//x4zwewk5bvnqxpj8HitSDSCNjB 5qLWKa5fXYXVayODxgx/Y7qYh/lBlkSu6kIeMIMF7m2EpsEEDOcYghN9KwnYS52+Jb /aZSC3+qwfYES6cyP5nkNPgYNGmFZaxnhTiz0waQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Francesco Lavra , Andy Shevchenko , Lorenzo Bianconi , Jonathan Cameron Subject: [PATCH 5.15 089/206] iio: imu: st_lsm6dsx: fix iio_chan_spec for sensors without event detection Date: Wed, 4 Feb 2026 15:38:40 +0100 Message-ID: <20260204143901.415381683@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260204143858.193781818@linuxfoundation.org> References: <20260204143858.193781818@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Francesco Lavra commit c34e2e2d67b3bb8d5a6d09b0d6dac845cdd13fb3 upstream. The st_lsm6dsx_acc_channels array of struct iio_chan_spec has a non-NULL event_spec field, indicating support for IIO events. However, event detection is not supported for all sensors, and if userspace tries to configure accelerometer wakeup events on a sensor device that does not support them (e.g. LSM6DS0), st_lsm6dsx_write_event() dereferences a NULL pointer when trying to write to the wakeup register. Define an additional struct iio_chan_spec array whose members have a NULL event_spec field, and use this array instead of st_lsm6dsx_acc_channels for sensors without event detection capability. Fixes: b5969abfa8b8 ("iio: imu: st_lsm6dsx: add motion events") Signed-off-by: Francesco Lavra Reviewed-by: Andy Shevchenko Acked-by: Lorenzo Bianconi Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -74,6 +74,13 @@ static const struct iio_chan_spec st_lsm IIO_CHAN_SOFT_TIMESTAMP(3), }; +static const struct iio_chan_spec st_lsm6ds0_acc_channels[] = { + ST_LSM6DSX_CHANNEL(IIO_ACCEL, 0x28, IIO_MOD_X, 0), + ST_LSM6DSX_CHANNEL(IIO_ACCEL, 0x2a, IIO_MOD_Y, 1), + ST_LSM6DSX_CHANNEL(IIO_ACCEL, 0x2c, IIO_MOD_Z, 2), + IIO_CHAN_SOFT_TIMESTAMP(3), +}; + static const struct iio_chan_spec st_lsm6dsx_gyro_channels[] = { ST_LSM6DSX_CHANNEL(IIO_ANGL_VEL, 0x22, IIO_MOD_X, 0), ST_LSM6DSX_CHANNEL(IIO_ANGL_VEL, 0x24, IIO_MOD_Y, 1), @@ -116,8 +123,8 @@ static const struct st_lsm6dsx_settings }, .channels = { [ST_LSM6DSX_ID_ACC] = { - .chan = st_lsm6dsx_acc_channels, - .len = ARRAY_SIZE(st_lsm6dsx_acc_channels), + .chan = st_lsm6ds0_acc_channels, + .len = ARRAY_SIZE(st_lsm6ds0_acc_channels), }, [ST_LSM6DSX_ID_GYRO] = { .chan = st_lsm6ds0_gyro_channels, @@ -1016,8 +1023,8 @@ static const struct st_lsm6dsx_settings }, .channels = { [ST_LSM6DSX_ID_ACC] = { - .chan = st_lsm6dsx_acc_channels, - .len = ARRAY_SIZE(st_lsm6dsx_acc_channels), + .chan = st_lsm6ds0_acc_channels, + .len = ARRAY_SIZE(st_lsm6ds0_acc_channels), }, [ST_LSM6DSX_ID_GYRO] = { .chan = st_lsm6dsx_gyro_channels,