commit ec0d5b6e8dcf62b809e9bfcf3570e186a64c95cd
author Guillaume Lager <g.lager@innoseis.com> Wed Oct 27 17:41:33 2021 +0200
committer Anas Nashif <anas.nashif@intel.com> Sat Nov 06 10:20:42 2021 -0400
tree f059b01c60098fcae4c8ef03dc5da57336637192
parent 8e95b95bb4f5af841fec788d53b6648cb618e439

driver: modem: Fix mux device name comparison

CONFIG_UART_MUX_DEVICE_NAME is used as a prefix for the uart muxes
name. Pointer comparison will always return false

Fix #39774

Signed-off-by: Guillaume Lager <g.lager@innoseis.com>

drivers/modem/modem_iface_uart.c

diff --git a/drivers/modem/modem_iface_uart.c b/drivers/modem/modem_iface_uart.c
index 9fe5287..1890d47 100644
--- a/drivers/modem/modem_iface_uart.c
+++ b/drivers/modem/modem_iface_uart.c
@@ -130,8 +130,8 @@
 	bool active = false;
 
 #if defined(CONFIG_UART_MUX_DEVICE_NAME)
-	const char *mux_name = CONFIG_UART_MUX_DEVICE_NAME;
-	active = (mux_name == iface->dev->name);
+	active = strncmp(CONFIG_UART_MUX_DEVICE_NAME, iface->dev->name,
+			 sizeof(CONFIG_UART_MUX_DEVICE_NAME) - 1) == 0;
 #endif /* CONFIG_UART_MUX_DEVICE_NAME */
 
 	return active;