From d2bb6994eb3b2d9a20f31d9e9e9dac90dd58d6ac Mon Sep 17 00:00:00 2001
From: "S.J.R. van Schaik" <stephan@whiteboxsystems.nl>
Date: Fri, 31 Mar 2017 15:53:56 +0200
Subject: [PATCH] spi: add function to release SPI device

---
 include/spi.h                | 1 +
 source/drivers/spi_flash.c   | 6 ++++++
 source/drivers/stm32f0_spi.c | 5 +++++
 3 files changed, 12 insertions(+)

diff --git a/include/spi.h b/include/spi.h
index 490c145..8cfd934 100644
--- a/include/spi.h
+++ b/include/spi.h
@@ -14,6 +14,7 @@ struct spi_dev {
 };
 
 struct spi_dev *spi_probe(void);
+void spi_release(struct spi_dev *dev);
 int spi_set_cs_level(struct spi_dev *dev, int level);
 int spi_tx_rx(struct spi_dev *dev, void *rx_buf, const void *tx_buf,
 	size_t len);
diff --git a/source/drivers/spi_flash.c b/source/drivers/spi_flash.c
index ec2462f..765e22a 100644
--- a/source/drivers/spi_flash.c
+++ b/source/drivers/spi_flash.c
@@ -152,3 +152,9 @@ err_free_dev:
 	free(dev);
 	return NULL;
 }
+
+void flash_release(struct flash_dev *dev)
+{
+	spi_release(dev->priv);
+	free(dev);
+}
diff --git a/source/drivers/stm32f0_spi.c b/source/drivers/stm32f0_spi.c
index 3aafa7e..3771fd6 100644
--- a/source/drivers/stm32f0_spi.c
+++ b/source/drivers/stm32f0_spi.c
@@ -62,6 +62,11 @@ struct spi_dev *spi_probe(void)
 	return dev;
 }
 
+void spi_release(struct spi_dev *dev)
+{
+	free(dev);
+}
+
 static int stm32f0_spi_set_cs_level(struct spi_dev *dev, int level)
 {
 	(void)dev;