diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2015-03-18 11:27:28 +0100 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2015-04-10 10:03:57 +0100 |
| commit | b4773b1d802a7f46cc0d1db1d80850fa6d9bf15f (patch) | |
| tree | 54e67d6df705af6696498230448aba61468cc57f /include/trace | |
| parent | 66c1d22bc170f9bfaa54a11e34ac7f0392e52100 (diff) | |
spi: trigger trace event for message-done before mesg->complete
commit 391949b6f02121371e3d7d9082c6d17fd9853034 upstream.
With spidev the mesg->complete callback points to spidev_complete.
Calling this unblocks spidev_sync and so spidev_sync_write finishes. As
the struct spi_message just read is a local variable in
spidev_sync_write and recording the trace event accesses this message
the recording is better done first. The same can happen for
spidev_sync_read.
This fixes an oops observed on a 3.14-rt system with spidev activity
after
echo 1 > /sys/kernel/debug/tracing/events/spi/enable
.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'include/trace')
0 files changed, 0 insertions, 0 deletions