5 files changed, 11 insertions, 11 deletions
diff --git a/cmd/sbc_harness/hw/rp2040_hwspi.c b/cmd/sbc_harness/hw/rp2040_hwspi.c
index dd9a577..6742c60 100644
--- a/cmd/sbc_harness/hw/rp2040_hwspi.c
+++ b/cmd/sbc_harness/hw/rp2040_hwspi.c
@@ -1,4 +1,4 @@
-/* hw/rp2040_hwspi.c - `struct spi` implementation for the RP2040's
+/* hw/rp2040_hwspi.c - `implements_spi` implementation for the RP2040's
  *                     ARM Primecell SSP (PL022) (implementation file)
  *
  * Copyright (C) 2024  Luke T. Shumaker <lukeshu@lukeshu.com>
diff --git a/cmd/sbc_harness/hw/rp2040_hwspi.h b/cmd/sbc_harness/hw/rp2040_hwspi.h
index 8bf783f..8cf8aff 100644
--- a/cmd/sbc_harness/hw/rp2040_hwspi.h
+++ b/cmd/sbc_harness/hw/rp2040_hwspi.h
@@ -1,4 +1,4 @@
-/* hw/rp2040_hwspi.h - `struct spi` implementation for the RP2040's
+/* hw/rp2040_hwspi.h - `implements_spi` implementation for the RP2040's
  *                     ARM Primecell SSP (PL022) (header file)
  *
  * Copyright (C) 2024  Luke T. Shumaker <lukeshu@lukeshu.com>
diff --git a/cmd/sbc_harness/hw/spi.h b/cmd/sbc_harness/hw/spi.h
index 653e80f..da588de 100644
--- a/cmd/sbc_harness/hw/spi.h
+++ b/cmd/sbc_harness/hw/spi.h
@@ -22,7 +22,11 @@ struct bidi_iovec {
 	size_t   iov_len;
 };
 
-struct spi;
+struct spi_vtable;
+
+typedef struct {
+	struct spi_vtable      *vtable;
+} implements_spi;
 
 /* This API assumes that an SPI frame is a multiple of 8-bits.
  *
@@ -37,11 +41,7 @@ struct spi;
  * non-multiple-of-8 number of bits.
  */
 struct spi_vtable {
-	void (*readwritev)(struct spi *, const struct bidi_iovec *iov, int iovcnt);
+	void (*readwritev)(implements_spi *, const struct bidi_iovec *iov, int iovcnt);
 };
 
-typedef struct spi {
- 	struct spi_vtable      *vtable;
-} implements_spi;
-
 #endif /* _HW_SPI_H_ */
diff --git a/cmd/sbc_harness/hw/w5500.c b/cmd/sbc_harness/hw/w5500.c
index a6cdc8b..5e36bcf 100644
--- a/cmd/sbc_harness/hw/w5500.c
+++ b/cmd/sbc_harness/hw/w5500.c
@@ -170,7 +170,7 @@ static void w5500_intrhandler(uint gpio, uint32_t UNUSED(event_mask)) {
 }
 
 void _w5500_init(struct w5500 *chip,
-                 struct spi* spi, uint pin_intr, uint pin_reset,
+                 implements_spi *spi, uint pin_intr, uint pin_reset,
                  struct net_eth_addr addr) {
 	assert(chip);
 	assert(spi);
diff --git a/cmd/sbc_harness/hw/w5500.h b/cmd/sbc_harness/hw/w5500.h
index 1b485dd..2ff04df 100644
--- a/cmd/sbc_harness/hw/w5500.h
+++ b/cmd/sbc_harness/hw/w5500.h
@@ -35,7 +35,7 @@ struct _w5500_tcp_listener {
 
 struct w5500 {
 	/* const-after-init */
-	struct spi                      *spidev;
+	implements_spi                  *spidev;
 	uint                             pin_intr;
 	uint                             pin_reset;
 	struct net_eth_addr              hwaddr;
@@ -66,7 +66,7 @@ struct w5500 {
 		_w5500_init(self, spi, pin_intr, pin_reset, eth_addr);  \
 	} while (0)
 void _w5500_init(struct w5500 *self,
-                 struct spi* spi, uint pin_intr, uint pin_reset,
+                 implements_spi *spi, uint pin_intr, uint pin_reset,
                  struct net_eth_addr addr);
 
 /**