modem: cmux: debug message on DLCI open/close

JordanYates · JordanYates · commit 8264ba18e85f · 2025-10-19T16:06:28.000+10:00
Add simple debug messages when a DLCI command opening or closing a
channel is sent.

Signed-off-by: Jordan Yates &lt;jordan@embeint.com&gt;
diff --git a/subsys/modem/modem_cmux.c b/subsys/modem/modem_cmux.c
@@ -1300,6 +1300,7 @@ static void modem_cmux_dlci_open_handler(struct k_work *item)
 		.data_len = 0,
 	};
 
+	LOG_DBG("Opening: %d", dlci->dlci_address);
 	modem_cmux_transmit_cmd_frame(dlci->cmux, &frame);
 	modem_work_schedule(&dlci->open_work, MODEM_CMUX_T1_TIMEOUT);
 }
@@ -1329,6 +1330,7 @@ static void modem_cmux_dlci_close_handler(struct k_work *item)
 		.data_len = 0,
 	};
 
+	LOG_DBG("Closing: %d", dlci->dlci_address);
 	modem_cmux_transmit_cmd_frame(cmux, &frame);
 	modem_work_schedule(&dlci->close_work, MODEM_CMUX_T1_TIMEOUT);
 }

Original file line number	Diff line number	Diff line change
`@@ -1300,6 +1300,7 @@ static void modem_cmux_dlci_open_handler(struct k_work *item)`
`1300`	`1300`	`.data_len = 0,`
`1301`	`1301`	`};`
`1302`	`1302`
	`1303`	`+ LOG_DBG("Opening: %d", dlci->dlci_address);`
`1303`	`1304`	`modem_cmux_transmit_cmd_frame(dlci->cmux, &frame);`
`1304`	`1305`	`modem_work_schedule(&dlci->open_work, MODEM_CMUX_T1_TIMEOUT);`
`1305`	`1306`	`}`
`@@ -1329,6 +1330,7 @@ static void modem_cmux_dlci_close_handler(struct k_work *item)`
`1329`	`1330`	`.data_len = 0,`
`1330`	`1331`	`};`
`1331`	`1332`
	`1333`	`+ LOG_DBG("Closing: %d", dlci->dlci_address);`
`1332`	`1334`	`modem_cmux_transmit_cmd_frame(cmux, &frame);`
`1333`	`1335`	`modem_work_schedule(&dlci->close_work, MODEM_CMUX_T1_TIMEOUT);`
`1334`	`1336`	`}`