linux-kernel - [PATCH v4 3/7] usb: typec: Print err when displayport fails to enter

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Message-ID: <20241206153813.v4.3.I6cff9d767b0f8ab6458d8940941e42c920902d49@changeid>
Date: Fri,  6 Dec 2024 15:38:14 -0800
From: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
To: heikki.krogerus@...ux.intel.com,
	tzungbi@...nel.org,
	linux-usb@...r.kernel.org,
	chrome-platform@...ts.linux.dev
Cc: akuchynski@...gle.com,
	pmalani@...omium.org,
	jthies@...gle.com,
	dmitry.baryshkov@...aro.org,
	badhri@...gle.com,
	rdbabiera@...gle.com,
	Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v4 3/7] 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@...omium.org>
---

(no changes since v1)

 drivers/usb/typec/altmodes/displayport.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c
index 3245e03d59e6..e292780ec309 100644
--- a/drivers/usb/typec/altmodes/displayport.c
+++ b/drivers/usb/typec/altmodes/displayport.c
@@ -252,7 +252,8 @@ 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);
-- 
2.47.0.338.g60cca15819-goog