usb: typec: Print err when displayport fails to enter

Print the error reason for typec_altmode_enter so users can understand
why displayport failed to enter.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://lore.kernel.org/r/20241213153543.v5.4.I6cff9d767b0f8ab6458d8940941e42c920902d49@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c
index 3245e03d59e6561aba442332ce0466eafc420e30..ac84a6d64c2fbb85e01da953e44a09c652566481 100644 (file)
--- a/drivers/usb/typec/altmodes/displayport.c
+++ b/drivers/usb/typec/altmodes/displayport.c
@@ -252,7 +252,7 @@ static void dp_altmode_work(struct work_struct *work)
        case DP_STATE_ENTER:
                ret = typec_altmode_enter(dp->alt, NULL);
                if (ret && ret != -EBUSY)
-                       dev_err(&dp->alt->dev, "failed to enter mode\n");
+                       dev_err(&dp->alt->dev, "failed to enter mode: %d\n", ret);
                break;
        case DP_STATE_ENTER_PRIME:
                ret = typec_cable_altmode_enter(dp->alt, TYPEC_PLUG_SOP_P, NULL);