From 877cfed3b26f2fd5a64b482e56b180b67597542d Mon Sep 17 00:00:00 2001
From: Vadim Yanitskiy <vyanitskiy@sysmocom.de>
Date: Sun, 12 Nov 2023 17:21:31 +0700
Subject: [PATCH] soft_uart: add osmo_soft_uart_free()

Change-Id: I2fdcf6116144d8f16cf4167c37cfa7215d16337f
Related: OS#4396
---
 include/osmocom/core/soft_uart.h |  1 +
 src/core/libosmocore.map         |  1 +
 src/core/soft_uart.c             | 14 ++++++++++++++
 3 files changed, 16 insertions(+)

diff --git a/include/osmocom/core/soft_uart.h b/include/osmocom/core/soft_uart.h
index 36a43fe7d..4f9c1fcfc 100644
--- a/include/osmocom/core/soft_uart.h
+++ b/include/osmocom/core/soft_uart.h
@@ -75,6 +75,7 @@ struct osmo_soft_uart_cfg {
 struct osmo_soft_uart;
 
 struct osmo_soft_uart *osmo_soft_uart_alloc(void *ctx, const char *name);
+void osmo_soft_uart_free(struct osmo_soft_uart *suart);
 int osmo_soft_uart_configure(struct osmo_soft_uart *suart, const struct osmo_soft_uart_cfg *cfg);
 int osmo_soft_uart_enable(struct osmo_soft_uart *suart, bool rx, bool tx);
 
diff --git a/src/core/libosmocore.map b/src/core/libosmocore.map
index c08d3ff87..142e4c427 100644
--- a/src/core/libosmocore.map
+++ b/src/core/libosmocore.map
@@ -440,6 +440,7 @@ osmo_sock_set_priority;
 osmo_sock_unix_init;
 osmo_sock_unix_init_ofd;
 osmo_soft_uart_alloc;
+osmo_soft_uart_free;
 osmo_soft_uart_configure;
 osmo_soft_uart_enable;
 osmo_soft_uart_rx_ubits;
diff --git a/src/core/soft_uart.c b/src/core/soft_uart.c
index 22292af37..78604530d 100644
--- a/src/core/soft_uart.c
+++ b/src/core/soft_uart.c
@@ -220,6 +220,20 @@ struct osmo_soft_uart *osmo_soft_uart_alloc(void *ctx, const char *name)
 	return suart;
 }
 
+/*! Release memory taken by the given soft-UART.
+ * \param[in] suart soft-UART instance to be free()d. */
+void osmo_soft_uart_free(struct osmo_soft_uart *suart)
+{
+	if (suart == NULL)
+		return;
+
+	osmo_timer_del(&suart->rx.timer);
+	msgb_free(suart->rx.msg);
+
+	talloc_free((void *)suart->name);
+	talloc_free(suart);
+}
+
 /*! change soft-UART configuration to user-provided config */
 int osmo_soft_uart_configure(struct osmo_soft_uart *suart, const struct osmo_soft_uart_cfg *cfg)
 {