[v3,08/13] can: slcan: send the open command to the adapter
diff mbox series

Message ID 20220612213927.3004444-9-dario.binacchi@amarulasolutions.com
State New
Headers show
Series
  • can: slcan: extend supported features
Related show

Commit Message

Dario Binacchi June 12, 2022, 9:39 p.m. UTC 
In case the bitrate has been set via ip tool, this patch changes the
driver to send the open command ("O\r") to the adapter.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

---

(no changes since v2)

Changes in v2:
- Improve the commit message.

 drivers/net/can/slcan.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

Patch
diff mbox series 

diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c
index be3f7e5c685b..9bbf8f363f58 100644
--- a/drivers/net/can/slcan.c
+++ b/drivers/net/can/slcan.c
@@ -495,14 +495,23 @@  static int slc_open(struct net_device *dev)
 			netdev_err(dev,
 				   "failed to send bitrate command 'C\\rS%d\\r'\n",
 				   s);
-			close_candev(dev);
-			return err;
+			goto cmd_transmit_failed;
+		}
+
+		err = slcan_transmit_cmd(sl, "O\r");
+		if (err) {
+			netdev_err(dev, "failed to send open command 'O\\r'\n");
+			goto cmd_transmit_failed;
 		}
 	}
 
 	sl->can.state = CAN_STATE_ERROR_ACTIVE;
 	netif_start_queue(dev);
 	return 0;
+
+cmd_transmit_failed:
+	close_candev(dev);
+	return err;
 }
 
 static void slc_dealloc(struct slcan *sl)