[PATCH] spi: bcm63xx-hsspi: Fix compiler warning

[William Zhang]

When build for arm64 target, comipler reports the following warning:
drivers/spi/bcm63xx_hsspi.c: In function ‘bcm63xx_hsspi_xfer_dummy_cs’:
include/linux/kernel.h:184:17: warning: comparison of distinct pointer
types lacks a cast
  184 |  (void) (&_min1 == &_min2);  \
      |                 ^~
drivers/spi/bcm63xx_hsspi.c:298:22: note: in expansion of macro ‘min’
  298 |   size_t curr_step = min(step_size, data_bytes);

This change fix this warning by casting the data_bytes to size_t.

Fixes: 0e144ec38cbb ("spi: bcm63xx-hsspi: Add prepend mode support")
Signed-off-by: William Zhang <william.zhang at broadcom.com>
---

 drivers/spi/bcm63xx_hsspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/bcm63xx_hsspi.c b/drivers/spi/bcm63xx_hsspi.c
index a24bb430cbb4..19d9a5ae23cd 100644
--- a/drivers/spi/bcm63xx_hsspi.c
+++ b/drivers/spi/bcm63xx_hsspi.c
@@ -295,7 +295,7 @@ static int bcm63xx_hsspi_xfer_dummy_cs(struct udevice *dev, unsigned int data_by
 
 	/* transfer loop */
 	while (data_bytes > 0) {
-		size_t curr_step = min(step_size, data_bytes);
+		size_t curr_step = min(step_size, (size_t)data_bytes);
 		int ret;
 
 		/* copy tx data */
-- 
2.37.3