spi: Fix parameter types for spi functions

1. Use size_t instead of unsigned int for bytes_out and bytes_in.
2. Use const attribute for spi_slave structure passed into xfer, claim
bus and release bus functions.

BUG=chrome-os-partner:59832
BRANCH=None
TEST=Compiles successfully

Change-Id: Ie70b3520b51c42d750f907892545510c6058f85a
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17682
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

2 files changed, 11 insertions, 11 deletions

diff --git a/src/soc/marvell/armada38x/spi.c b/src/soc/marvell/armada38x/spi.c
index 6a0e062327..af0a279133 100644
--- a/src/soc/marvell/armada38x/spi.c
+++ b/src/soc/marvell/armada38x/spi.c
@@ -409,8 +409,8 @@ int mv_spi_8bit_data_tx_rx(unsigned char spi_id,
 	return MV_OK;
 }
 
-static int mrvl_spi_xfer(struct spi_slave *slave,
-			 unsigned int bitlen,
+static int mrvl_spi_xfer(const struct spi_slave *slave,
+			 size_t bitlen,
 			 const void *dout,
 			 void *din)
 {
@@ -454,14 +454,14 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
 	return slave;
 }
 
-int spi_claim_bus(struct spi_slave *slave)
+int spi_claim_bus(const struct spi_slave *slave)
 {
 	mv_spi_cs_set(slave->bus, slave->cs);
 	mv_spi_cs_assert(slave->bus);
 	return 0;
 }
 
-void spi_release_bus(struct spi_slave *slave)
+void spi_release_bus(const struct spi_slave *slave)
 {
 	mv_spi_cs_deassert(slave->bus);
 }
@@ -471,11 +471,11 @@ unsigned int spi_crop_chunk(unsigned int cmd_len, unsigned int buf_len)
 	return buf_len;
 }
 
-int spi_xfer(struct spi_slave *slave,
+int spi_xfer(const struct spi_slave *slave,
 	     const void *dout,
-	     unsigned out_bytes,
+	     size_t out_bytes,
 	     void *din,
-	     unsigned in_bytes)
+	     size_t in_bytes)
 {
 	int ret = -1;
 
diff --git a/src/soc/marvell/bg4cd/spi.c b/src/soc/marvell/bg4cd/spi.c
index 53f46c78ec..9a999b049c 100644
--- a/src/soc/marvell/bg4cd/spi.c
+++ b/src/soc/marvell/bg4cd/spi.c
@@ -20,17 +20,17 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
 	return NULL;
 }
 
-int spi_claim_bus(struct spi_slave *slave)
+int spi_claim_bus(const struct spi_slave *slave)
 {
 	return 0;
 }
 
-void spi_release_bus(struct spi_slave *slave)
+void spi_release_bus(const struct spi_slave *slave)
 {
 }
 
-int spi_xfer(struct spi_slave *slave, const void *dout,
-	     unsigned out_bytes, void *din, unsigned in_bytes)
+int spi_xfer(const struct spi_slave *slave, const void *dout,
+	     size_t out_bytes, void *din, size_t in_bytes)
 {
 	return 0;
 }