Commit Graph

3 Commits

Author SHA1 Message Date
Martin Sperl fc8773e195 spi: loopback: match configuration of test to description
The test "two tx+rx transfers - alter second" actually modifies
the first not the second transfer, which - in conjunction with
testing the read data - results also in overwriting data read
earlier.

Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-12-13 20:10:14 +00:00
Martin Sperl d58b9fda12 spi: loopback: fix printk format issues with size_t
Fixes the reported printk format issues reported by kbuild-test-robot.

Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-12-13 20:10:14 +00:00
Martin Sperl 84e0c4e5e2 spi: add loopback test driver to allow for spi_master regression tests
This driver is submitting lots of distinct spi-messages messages
with all kinds of alignments and length pattern.
Also distinct kinds of transfer pattern tests are implemented
(rx, tx, rx/tx, tx+tx, tx+rx,...)

Right now on a raspberry pi 752 distinct spi_messages are executed
in 13 different scenarios.

Configuration of additional test-pattern is easy, so that when
new bugs in drivers get detected the relevant transfer pattern can
also get added to the test framework, so that such situations are
detected in other drivers as well.

The idea behind this driver is to make it possible to also detect
regressions in spi_master implementations when changes occur.
Potentially these tests could get executed automatically in a
test-server-farm.

Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-12-12 23:05:18 +00:00