spi: remove spi_controller_is_slave() and spi_slave_abort()

spi_controller_is_slave() and spi_slave_abort() are all replaced,
so they can be removed.

No functional changed.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://patch.msgid.link/20240910022618.1397-8-yangyingliang@huaweicloud.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi.c

@@ -2934,21 +2934,10 @@ static struct class spi_master_class = {
 
 #ifdef CONFIG_SPI_SLAVE
 /**
- * spi_slave_abort - abort the ongoing transfer request on an SPI slave
+ * spi_target_abort - abort the ongoing transfer request on an SPI slave
  *		     controller
  * @spi: device used for the current transfer
  */
-int spi_slave_abort(struct spi_device *spi)
-{
-	struct spi_controller *ctlr = spi->controller;
-
-	if (spi_controller_is_slave(ctlr) && ctlr->slave_abort)
-		return ctlr->slave_abort(ctlr);
-
-	return -ENOTSUPP;
-}
-EXPORT_SYMBOL_GPL(spi_slave_abort);
-
 int spi_target_abort(struct spi_device *spi)
 {
 	struct spi_controller *ctlr = spi->controller;

include/linux/spi/spi.h

@@ -498,7 +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
@@ -725,10 +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
@@ -802,11 +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;
@@ -1296,7 +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