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spi/s3c64xx: Flush FIFOs prior to cleaning up transfer
author
Mark Brown
<broonie@linaro.org>
Fri, 27 Sep 2013 19:10:26 +0000
(20:10 +0100)
committer
Mark Brown
<broonie@linaro.org>
Mon, 30 Sep 2013 11:53:35 +0000
(12:53 +0100)
Ensure that the FIFOs are fully drained before we deassert /CS or do any
delays that have been requested in order to ensure that the behaviour
visible on the bus matches that which was requested by the caller.
Signed-off-by: Mark Brown <broonie@linaro.org>
drivers/spi/spi-s3c64xx.c
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diff --git
a/drivers/spi/spi-s3c64xx.c
b/drivers/spi/spi-s3c64xx.c
index 229c6b994be351870a71443b7ee830c3d042efa5..2e267ce9dc19a2b99e97c9165b6be470ff8847c3 100644
(file)
--- a/
drivers/spi/spi-s3c64xx.c
+++ b/
drivers/spi/spi-s3c64xx.c
@@
-960,6
+960,8
@@
static int s3c64xx_spi_transfer_one_message(struct spi_master *master,
goto out;
}
+ flush_fifo(sdd);
+
if (xfer->delay_usecs)
udelay(xfer->delay_usecs);
@@
-972,8
+974,6
@@
static int s3c64xx_spi_transfer_one_message(struct spi_master *master,
}
msg->actual_length += xfer->len;
-
- flush_fifo(sdd);
}
out:
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