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Subject[PATCH v2 08/13] can: slcan: send the open command to the adapter
Date
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>

---

Changes in v2:
- Improve the commit message.

drivers/net/can/slcan.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c
index 8561bcee81ba..ec682715ce99 100644
--- a/drivers/net/can/slcan.c
+++ b/drivers/net/can/slcan.c
@@ -461,8 +461,15 @@ static int slc_open(struct net_device *dev)
* can.bittiming.bitrate is 0, causing open_candev() to fail.
* So let's set to a fake value.
*/
- if (sl->can.bittiming.bitrate == 0)
+ if (sl->can.bittiming.bitrate == 0) {
sl->can.bittiming.bitrate = -1UL;
+ } else {
+ err = slcan_transmit_cmd(sl, "O\r");
+ if (err) {
+ netdev_err(dev, "failed to send open command 'O\\r'\n");
+ return err;
+ }
+ }

err = open_candev(dev);
if (err) {
--
2.32.0
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