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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>
This commit is contained in:
Andrey Vostrikov 2016-04-05 15:33:14 +03:00 committed by Mark Brown
parent f55532a0c0
commit 92dc20d83a
1 changed files with 2 additions and 2 deletions
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4
drivers/spi/spi-fsl-dspi.c
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@ -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;