Tue, Nov 25, 2025 at 06:36:26PM +0800, Duoming Zhou kirjoitti:

The gaokun_ucsi_probe() uses ucsi_create() to allocate a UCSI instance. The ucsi_create() validates whether ops->poll_cci is defined, and if not, it directly returns -EINVAL. However, the gaokun_ucsi_ops structure does not define the poll_cci, causing ucsi_create() always fail with -EINVAL. This issue can be observed in the kernel log with the following error:

ucsi_huawei_gaokun.ucsi huawei_gaokun_ec.ucsi.0: probe with driver ucsi_huawei_gaokun.ucsi failed with error -22

Fix the issue by adding the missing poll_cci callback to gaokun_ucsi_ops.

Fixes: 00327d7f2c8c ("usb: typec: ucsi: add Huawei Matebook E Go ucsi driver") Cc: stable@vger.kernel.org Signed-off-by: Duoming Zhou duoming@zju.edu.cn

Reviewed-by: Heikki Krogerus heikki.krogerus@linux.intel.com

---

Changes in v2:

• Add cc: stable.
• Correct spelling mistake.

drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c b/drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c index 7b5222081bb..8401ab414bd 100644 --- a/drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c +++ b/drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c @@ -196,6 +196,7 @@ static void gaokun_ucsi_connector_status(struct ucsi_connector *con) const struct ucsi_operations gaokun_ucsi_ops = { .read_version = gaokun_ucsi_read_version, .read_cci = gaokun_ucsi_read_cci,

• .poll_cci = gaokun_ucsi_read_cci, .read_message_in = gaokun_ucsi_read_message_in, .sync_control = ucsi_sync_control_common, .async_control = gaokun_ucsi_async_control,

-- 2.34.1