spi: flash: correct wrap-around.

7 years ago · 159a4e83b4
parent 3395eb1a82
commit 159a4e83b4
1 changed files with 1 additions and 1 deletions
--- a/source/drivers/spi_flash.c
+++ b/source/drivers/spi_flash.c
@ -130,7 +130,7 @@ static size_t spi_flash_write(struct flash_dev *dev, uint32_t addr,
 		spi_flash_addr(cmd, addr);

 		nbytes = min(len, 32);
-		nbytes = nbytes - ((addr + nbytes) & 0xff);
+		nbytes = min(nbytes, align_up(addr + 1, ilog2(256)) - addr);

 		memmove(cmd + 4, data, nbytes);
 		spi_tx_rx(spi_dev, NULL, 0, cmd, 4 + nbytes);