2 files changed, 22 insertions, 16 deletions

diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index d7a16e0adf44..4b95663163e0 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -351,10 +351,8 @@ struct spi_driver {
 	struct device_driver	driver;
 };
 
-static inline struct spi_driver *to_spi_driver(struct device_driver *drv)
-{
-	return drv ? container_of(drv, struct spi_driver, driver) : NULL;
-}
+#define to_spi_driver(__drv)   \
+	( __drv ? container_of_const(__drv, struct spi_driver, driver) : NULL )
 
 extern int __spi_register_driver(struct module *owner, struct spi_driver *sdrv);
 
@@ -500,7 +498,6 @@ extern struct spi_device *spi_new_ancillary_device(struct spi_device *spi, u8 ch
  *	     controller has native support for memory like operations.
  * @mem_caps: controller capabilities for the handling of memory operations.
  * @unprepare_message: undo any work done by prepare_message().
- * @slave_abort: abort the ongoing transfer request on an SPI slave controller
  * @target_abort: abort the ongoing transfer request on an SPI target controller
  * @cs_gpiods: Array of GPIO descriptors to use as chip select lines; one per CS
  *	number. Any individual value may be NULL for CS lines that
@@ -727,10 +724,7 @@ struct spi_controller {
 			       struct spi_message *message);
 	int (*unprepare_message)(struct spi_controller *ctlr,
 				 struct spi_message *message);
-	union {
-		int (*slave_abort)(struct spi_controller *ctlr);
-		int (*target_abort)(struct spi_controller *ctlr);
-	};
+	int (*target_abort)(struct spi_controller *ctlr);
 
 	/*
 	 * These hooks are for drivers that use a generic implementation
@@ -804,11 +798,6 @@ static inline void spi_controller_put(struct spi_controller *ctlr)
 		put_device(&ctlr->dev);
 }
 
-static inline bool spi_controller_is_slave(struct spi_controller *ctlr)
-{
-	return IS_ENABLED(CONFIG_SPI_SLAVE) && ctlr->slave;
-}
-
 static inline bool spi_controller_is_target(struct spi_controller *ctlr)
 {
 	return IS_ENABLED(CONFIG_SPI_SLAVE) && ctlr->target;
@@ -904,12 +893,29 @@ extern int devm_spi_register_controller(struct device *dev,
 					struct spi_controller *ctlr);
 extern void spi_unregister_controller(struct spi_controller *ctlr);
 
-#if IS_ENABLED(CONFIG_ACPI)
+#if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SPI_MASTER)
 extern struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev);
 extern struct spi_device *acpi_spi_device_alloc(struct spi_controller *ctlr,
 						struct acpi_device *adev,
 						int index);
 int acpi_spi_count_resources(struct acpi_device *adev);
+#else
+static inline struct spi_controller *acpi_spi_find_controller_by_adev(struct acpi_device *adev)
+{
+	return NULL;
+}
+
+static inline struct spi_device *acpi_spi_device_alloc(struct spi_controller *ctlr,
+						       struct acpi_device *adev,
+						       int index)
+{
+	return ERR_PTR(-ENODEV);
+}
+
+static inline int acpi_spi_count_resources(struct acpi_device *adev)
+{
+	return 0;
+}
 #endif
 
 /*
@@ -1281,7 +1287,6 @@ extern int devm_spi_optimize_message(struct device *dev, struct spi_device *spi,
 
 extern int spi_setup(struct spi_device *spi);
 extern int spi_async(struct spi_device *spi, struct spi_message *message);
-extern int spi_slave_abort(struct spi_device *spi);
 extern int spi_target_abort(struct spi_device *spi);
 
 static inline size_t
diff --git a/include/linux/spi/spi_bitbang.h b/include/linux/spi/spi_bitbang.h
index d4cb83195f7a..c92cd43a47f4 100644
--- a/include/linux/spi/spi_bitbang.h
+++ b/include/linux/spi/spi_bitbang.h
@@ -24,6 +24,7 @@ struct spi_bitbang {
 #define	BITBANG_CS_ACTIVE	1	/* normally nCS, active low */
 #define	BITBANG_CS_INACTIVE	0
 
+	void	(*set_mosi_idle)(struct spi_device *spi);
 	/* txrx_bufs() may handle dma mapping for transfers that don't
 	 * already have one (transfer.{tx,rx}_dma is zero), or use PIO
 	 */