linux-kernel - [PATCH] usb: typec: ucsi: fix gpio-based orientation detection

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Date:   Fri,  8 Dec 2023 13:36:02 +0100
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Neil Armstrong <neil.armstrong@...aro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH] usb: typec: ucsi: fix gpio-based orientation detection

Fix the recently added connector sanity check which was off by one and
prevented orientation notifications from being handled correctly for the
second port when using GPIOs to determine orientation.

Fixes: c6165ed2f425 ("usb: ucsi: glink: use the connector orientation GPIO to provide switch events")
Cc: Neil Armstrong <neil.armstrong@...aro.org>
Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---

I found this one through inspection when skimming the driver.

Johan


 drivers/usb/typec/ucsi/ucsi_glink.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/typec/ucsi/ucsi_glink.c b/drivers/usb/typec/ucsi/ucsi_glink.c
index db6e248f8208..4853141cd10c 100644
--- a/drivers/usb/typec/ucsi/ucsi_glink.c
+++ b/drivers/usb/typec/ucsi/ucsi_glink.c
@@ -228,7 +228,7 @@ static void pmic_glink_ucsi_notify(struct work_struct *work)
 
 	con_num = UCSI_CCI_CONNECTOR(cci);
 	if (con_num) {
-		if (con_num < PMIC_GLINK_MAX_PORTS &&
+		if (con_num <= PMIC_GLINK_MAX_PORTS &&
 		    ucsi->port_orientation[con_num - 1]) {
 			int orientation = gpiod_get_value(ucsi->port_orientation[con_num - 1]);
 
-- 
2.41.0