Vladimir Oltean 862dd2a946
spi: Don't look at TX buffer for PTP system timestamping
The API for PTP system timestamping (associating a SPI transaction with
the system time at which it was transferred) is flawed: it assumes that
the xfer->tx_buf pointer will always be present.

This is, of course, not always the case.

So introduce a "progress" variable that denotes how many word have been
transferred.

Fix the Freescale DSPI driver, the only user of the API so far, in the
same patch.

Fixes: b42faeee718c ("spi: Add a PTP system timestamp to the transfer structure")
Fixes: d6b71dfaeeba ("spi: spi-fsl-dspi: Implement the PTP system timestamping for TCFQ mode")
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20191227012417.1057-1-olteanv@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-12-27 23:03:43 +00:00
2019-09-30 10:25:24 -07:00
2019-09-30 09:29:53 -07:00
2019-09-22 10:58:15 -07:00
2019-09-30 09:29:53 -07:00
2019-09-18 09:49:13 -07:00
2019-09-22 10:34:46 -07:00
2019-09-13 17:21:38 +03:00
2019-09-29 11:20:41 -07:00
2019-09-30 10:35:40 -07:00

Linux kernel
============

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