linux-kernel - [PATCH 4.19 54/91] can: m_can: m_can_handle_state

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Message-Id: <20201123121811.948329304@linuxfoundation.org>
Date:   Mon, 23 Nov 2020 13:22:14 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Wu Bo <wubo.oduw@...il.com>,
        Dan Murphy <dmurphy@...com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 54/91] can: m_can: m_can_handle_state_change(): fix state change

From: Wu Bo <wubo.oduw@...il.com>

[ Upstream commit cd0d83eab2e0c26fe87a10debfedbb23901853c1 ]

m_can_handle_state_change() is called with the new_state as an argument.

In the switch statements for CAN_STATE_ERROR_ACTIVE, the comment and the
following code indicate that a CAN_STATE_ERROR_WARNING is handled.

This patch fixes this problem by changing the case to CAN_STATE_ERROR_WARNING.

Signed-off-by: Wu Bo <wubo.oduw@...il.com>
Link: http://lore.kernel.org/r/20200129022330.21248-2-wubo.oduw@gmail.com
Cc: Dan Murphy <dmurphy@...com>
Fixes: e0d1f4816f2a ("can: m_can: add Bosch M_CAN controller support")
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/can/m_can/m_can.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index deb274a19ba00..efaa342600c41 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -675,7 +675,7 @@ static int m_can_handle_state_change(struct net_device *dev,
 	unsigned int ecr;
 
 	switch (new_state) {
-	case CAN_STATE_ERROR_ACTIVE:
+	case CAN_STATE_ERROR_WARNING:
 		/* error warning state */
 		priv->can.can_stats.error_warning++;
 		priv->can.state = CAN_STATE_ERROR_WARNING;
@@ -704,7 +704,7 @@ static int m_can_handle_state_change(struct net_device *dev,
 	__m_can_get_berr_counter(dev, &bec);
 
 	switch (new_state) {
-	case CAN_STATE_ERROR_ACTIVE:
+	case CAN_STATE_ERROR_WARNING:
 		/* error warning state */
 		cf->can_id |= CAN_ERR_CRTL;
 		cf->data[1] = (bec.txerr > bec.rxerr) ?
-- 
2.27.0