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spi: Catch improper use of PTP system timestamping API 

We can catch whether the SPI controller has declared it can take care of
software timestamping transfers, but didn't. So do it.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20191227012444.1204-1-olteanv@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vladimir Oltean 2019-12-27 03:24:44 +02:00 committed by Mark Brown
parent f03ee2042b
commit f971a20744
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1 changed files with 7 additions and 0 deletions
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7
drivers/spi/spi.c
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@ -1680,6 +1680,13 @@ void spi_finalize_current_message(struct spi_controller *ctlr)
}
}
if (unlikely(ctlr->ptp_sts_supported)) {
list_for_each_entry(xfer, &mesg->transfers, transfer_list) {
WARN_ON_ONCE(xfer->ptp_sts && !xfer->timestamped_pre);
WARN_ON_ONCE(xfer->ptp_sts && !xfer->timestamped_post);
}
}
spi_unmap_msg(ctlr, mesg);
if (ctlr->cur_msg_prepared && ctlr->unprepare_message) {