From f6fcad5f2a889db6fb26afd71ed92dde00cb85e1 Mon Sep 17 00:00:00 2001 From: Mario Six Date: Mon, 29 Apr 2019 01:58:51 +0530 Subject: [PATCH] spi: mpc8xxx: Fix if check Decreasing the bit length and increasing the write data pointer should be done when there are more than 32 bit of data, not 16 bit. This did not produce incorrect behavior, because the only time where the two checks produce different outcomes is the case of 16 < bitlen < 32, and in this case the subsequent transmission is the last one regardless, hence the additional bit length decrease and write data pointer increase has no effect anyway. Still, the correct check is the check for "bitlen > 32", so correct this behavior. Signed-off-by: Mario Six Acked-by: Jagan Teki --- drivers/spi/mpc8xxx_spi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/mpc8xxx_spi.c b/drivers/spi/mpc8xxx_spi.c index 1e7c014..e09e91c 100644 --- a/drivers/spi/mpc8xxx_spi.c +++ b/drivers/spi/mpc8xxx_spi.c @@ -132,7 +132,7 @@ int spi_xfer(struct spi_slave *slave, uint bitlen, const void *dout, void *din, /* Shift data so it's msb-justified */ tmpdout = *(u32 *)dout >> (32 - xfer_bitlen); - if (bitlen > 16) { + if (bitlen > 32) { /* Set up the next iteration if sending > 32 bits */ bitlen -= 32; dout += 4; -- 2.7.4