[Patch V1 2/2] spi: fsl-lpspi: quit reading rx fifo under error condition

[Gao Pan <pandy.gao@xxxxxxx>]

In case that error occurs during waiting for txfifo empty, it is
not necessary to read rx fifo. It's better to return directly.

Signed-off-by: Gao Pan <pandy.gao@xxxxxxx>
---
 drivers/spi/spi-fsl-lpspi.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c
index c4a4e262..52551f6 100644
--- a/drivers/spi/spi-fsl-lpspi.c
+++ b/drivers/spi/spi-fsl-lpspi.c
@@ -350,9 +350,12 @@ static int fsl_lpspi_transfer_one(struct spi_master *master,
 	}
 
 	ret = fsl_lpspi_txfifo_empty(fsl_lpspi);
+	if (ret)
+		return ret;
+
 	fsl_lpspi_read_rx_fifo(fsl_lpspi);
 
-	return ret;
+	return 0;
 }
 
 static int fsl_lpspi_transfer_one_msg(struct spi_master *master,
-- 
1.9.1

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