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authorAndrey Vostrikov <andrey.vostrikov@cogentembedded.com>2016-04-05 15:33:14 +0300
committerMark Brown <broonie@kernel.org>2016-04-05 22:12:42 +0300
commit92dc20d83adec565378254c0630e839ff5674e14 (patch)
tree0f3a1330a6be9004757dd4f00f1808d2244766a7 /drivers/spi
parentf55532a0c0b8bb6148f4e07853b876ef73bc69ca (diff)
downloadlinux-92dc20d83adec565378254c0630e839ff5674e14.tar.xz
spi: spi-fsl-dspi: Fix cs_change handling in message transfer
There are use cases when chip select should be triggered between transfers in single SPI message. Current implementation does this only on last transfer in message ignoring cs_change value provided in current transfer. Signed-off-by: Andrey Vostrikov <andrey.vostrikov@cogentembedded.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-fsl-dspi.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index 39412c9097c6..c1a2d747b246 100644
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -385,8 +385,8 @@ static int dspi_transfer_one_message(struct spi_master *master,
dspi->cur_chip = spi_get_ctldata(spi);
dspi->cs = spi->chip_select;
dspi->cs_change = 0;
- if (dspi->cur_transfer->transfer_list.next
- == &dspi->cur_msg->transfers)
+ if (list_is_last(&dspi->cur_transfer->transfer_list,
+ &dspi->cur_msg->transfers) || transfer->cs_change)
dspi->cs_change = 1;
dspi->void_write_data = dspi->cur_chip->void_write_data;