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| author | Andrey Vostrikov <andrey.vostrikov@cogentembedded.com> | 2016-04-05 14:33:14 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-04-05 21:12:42 +0200 |
| commit | 92dc20d83adec565378254c0630e839ff5674e14 (patch) | |
| tree | 0f3a1330a6be9004757dd4f00f1808d2244766a7 | |
| parent | Linux 4.6-rc1 (diff) | |
| download | linux-92dc20d83adec565378254c0630e839ff5674e14.tar.xz linux-92dc20d83adec565378254c0630e839ff5674e14.zip | |
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>
| -rw-r--r-- | drivers/spi/spi-fsl-dspi.c | 4 |
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; |