[PATCH 2/5] spi: tegra114: Run per-transfer delay before ending the transfer

[Vishwaroop A <va@nvidia.com>]

This driver implements transfer_one_message(), so it must follow the
SPI core sequence for the per-transfer delay: spi_transfer->delay is
the settle time after the transfer completes and must elapse while
CS is still asserted, before CS is deasserted.

The current sequence deasserts CS via tegra_spi_transfer_end() and
only then runs spi_transfer_delay_exec(), which drops the delay to
after CS has already gone inactive. Run the delay first on the paths
that drop CS.

Fixes: f4fade12d506 ("spi/tegra114: Correct support for cs_change")
Signed-off-by: Vishwaroop A <va@nvidia.com>
---
 drivers/spi/spi-tegra114.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c
index f9bd783cb4dc..d1118f1f2cb3 100644
--- a/drivers/spi/spi-tegra114.c
+++ b/drivers/spi/spi-tegra114.c
@@ -1096,20 +1096,20 @@ static int tegra_spi_transfer_one_message(struct spi_controller *host,
 
 complete_xfer:
 		if (ret < 0 || skip) {
-			tegra_spi_transfer_end(spi);
 			spi_transfer_delay_exec(xfer);
+			tegra_spi_transfer_end(spi);
 			goto exit;
 		} else if (list_is_last(&xfer->transfer_list,
 					&msg->transfers)) {
 			if (xfer->cs_change)
 				tspi->cs_control = spi;
 			else {
-				tegra_spi_transfer_end(spi);
 				spi_transfer_delay_exec(xfer);
+				tegra_spi_transfer_end(spi);
 			}
 		} else if (xfer->cs_change) {
-			tegra_spi_transfer_end(spi);
 			spi_transfer_delay_exec(xfer);
+			tegra_spi_transfer_end(spi);
 		}
 
 	}
-- 
2.17.1