From: Christian A. Ehrhardt Date: Wed, 20 Mar 2024 07:39:22 +0000 (+0100) Subject: usb: typec: ucsi: Clear EVENT_PENDING under PPM lock X-Git-Tag: v6.9-rc2~11^2~7 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=15b2e71b4653b3e13df34695a29ebeee237c5af2;p=thirdparty%2Flinux.git usb: typec: ucsi: Clear EVENT_PENDING under PPM lock Suppose we sleep on the PPM lock after clearing the EVENT_PENDING bit because the thread for another connector is executing a command. In this case the command completion of the other command will still report the connector change for our connector. Clear the EVENT_PENDING bit under the PPM lock to avoid another useless call to ucsi_handle_connector_change() in this case. Fixes: c9aed03a0a68 ("usb: ucsi: Add missing ppm_lock") Cc: stable Signed-off-by: Christian A. Ehrhardt Reviewed-by: Heikki Krogerus Tested-by: Neil Armstrong # on SM8550-QRD Link: https://lore.kernel.org/r/20240320073927.1641788-2-lk@c--e.de Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/typec/ucsi/ucsi.c b/drivers/usb/typec/ucsi/ucsi.c index cf52cb34d2859..8a6645ffd9387 100644 --- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -1215,11 +1215,11 @@ static void ucsi_handle_connector_change(struct work_struct *work) if (con->status.change & UCSI_CONSTAT_CAM_CHANGE) ucsi_partner_task(con, ucsi_check_altmodes, 1, 0); - clear_bit(EVENT_PENDING, &con->ucsi->flags); - mutex_lock(&ucsi->ppm_lock); + clear_bit(EVENT_PENDING, &con->ucsi->flags); ret = ucsi_acknowledge_connector_change(ucsi); mutex_unlock(&ucsi->ppm_lock); + if (ret) dev_err(ucsi->dev, "%s: ACK failed (%d)", __func__, ret);