diff mbox series

[5.8,125/633] spi: fsi: Handle 9 to 15 byte transfers lengths

Message ID 20201027135528.570866146@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Oct. 27, 2020, 1:47 p.m. UTC 
From: Brad Bishop <bradleyb@fuzziesquirrel.com>

[ Upstream commit 2b3cef0fc757bd06ed9b83bd4c436bfa55f47370 ]

The trailing <len> - 8 bytes of transfer data in this size range is no
longer ignored.

Fixes: bbb6b2f9865b ("spi: Add FSI-attached SPI controller driver")
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20200909222857.28653-2-eajames@linux.ibm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/spi/spi-fsi.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/spi/spi-fsi.c b/drivers/spi/spi-fsi.c
index 37a3e0f8e7526..8f64af0140e09 100644
--- a/drivers/spi/spi-fsi.c
+++ b/drivers/spi/spi-fsi.c
@@ -258,15 +258,15 @@  static int fsi_spi_sequence_transfer(struct fsi_spi *ctx,
 	if (loops > 1) {
 		fsi_spi_sequence_add(seq, SPI_FSI_SEQUENCE_BRANCH(idx));
 
-		if (rem)
-			fsi_spi_sequence_add(seq, rem);
-
 		rc = fsi_spi_write_reg(ctx, SPI_FSI_COUNTER_CFG,
 				       SPI_FSI_COUNTER_CFG_LOOPS(loops - 1));
 		if (rc)
 			return rc;
 	}
 
+	if (rem)
+		fsi_spi_sequence_add(seq, rem);
+
 	return 0;
 }