spi: loopback-test: don't skip comparing the first byte of rx_buf

When the loopback parameter is set, rx_buf are compared with tx_buf
after the spi_message is executed.  But the first byte of buffer is
not checked.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/spi/spi-loopback-test.c b/drivers/spi/spi-loopback-test.c
index 99422f3a15e0..85c0c4e391d9 100644
--- a/drivers/spi/spi-loopback-test.c
+++ b/drivers/spi/spi-loopback-test.c
@@ -507,7 +507,7 @@ static int spi_test_check_loopback_result(struct spi_device *spi,
                         continue;
                 /* so depending on tx_buf we need to handle things */
                 if (xfer->tx_buf) {
-                        for (i = 1; i < xfer->len; i++) {
+                        for (i = 0; i < xfer->len; i++) {
                                 txb = ((u8 *)xfer->tx_buf)[i];
                                 rxb = ((u8 *)xfer->rx_buf)[i];
                                 if (txb != rxb)