netdev - [PATCH net-next 4/7] can: netlink: can_changelink(): rename tdc_mask into fd_tdc_flag

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Message-ID: <20250610094933.1593081-5-mkl@pengutronix.de>
Date: Tue, 10 Jun 2025 11:46:19 +0200
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	kuba@...nel.org,
	linux-can@...r.kernel.org,
	kernel@...gutronix.de,
	Vincent Mailhol <mailhol.vincent@...adoo.fr>,
	Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH net-next 4/7] can: netlink: can_changelink(): rename tdc_mask into fd_tdc_flag_provided

From: Vincent Mailhol <mailhol.vincent@...adoo.fr>

The only purpose of the tdc_mask variable is to check whether or not
any tdc flags (CAN_CTRLMODE_TDC_{AUTO,MANUAL}) were provided. At this
point, the actual value of the flags do no matter any more because
these can be deduced from some other information.

Rename the tdc_mask variable into fd_tdc_flag_provided to make this
more explicit. Note that the fd_ prefix is added in preparation of the
introduction of CAN XL.

Signed-off-by: Vincent Mailhol <mailhol.vincent@...adoo.fr>
Link: https://patch.msgid.link/20241112165118.586613-12-mailhol.vincent@wanadoo.fr
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 drivers/net/can/dev/netlink.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/can/dev/netlink.c b/drivers/net/can/dev/netlink.c
index 16b0f326c143..13826e8a707b 100644
--- a/drivers/net/can/dev/netlink.c
+++ b/drivers/net/can/dev/netlink.c
@@ -189,7 +189,7 @@ static int can_changelink(struct net_device *dev, struct nlattr *tb[],
 			  struct netlink_ext_ack *extack)
 {
 	struct can_priv *priv = netdev_priv(dev);
-	u32 tdc_mask = 0;
+	bool fd_tdc_flag_provided = false;
 	int err;
 
 	/* We need synchronization with dev->stop() */
@@ -234,11 +234,11 @@ static int can_changelink(struct net_device *dev, struct nlattr *tb[],
 			memset(&priv->fd.tdc, 0, sizeof(priv->fd.tdc));
 		}
 
-		tdc_mask = cm->mask & CAN_CTRLMODE_FD_TDC_MASK;
+		fd_tdc_flag_provided = cm->mask & CAN_CTRLMODE_FD_TDC_MASK;
 		/* CAN_CTRLMODE_TDC_{AUTO,MANUAL} are mutually
 		 * exclusive: make sure to turn the other one off
 		 */
-		if (tdc_mask)
+		if (fd_tdc_flag_provided)
 			priv->ctrlmode &= cm->flags | ~CAN_CTRLMODE_FD_TDC_MASK;
 	}
 
@@ -342,7 +342,7 @@ static int can_changelink(struct net_device *dev, struct nlattr *tb[],
 				priv->ctrlmode &= ~CAN_CTRLMODE_FD_TDC_MASK;
 				return err;
 			}
-		} else if (!tdc_mask) {
+		} else if (!fd_tdc_flag_provided) {
 			/* Neither of TDC parameters nor TDC flags are
 			 * provided: do calculation
 			 */
-- 
2.47.2