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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2023-04-01 20:59:47 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-17 14:59:12 +0300 |
| commit | 7ffce225ffe3d9c89f0db3889cc48fe6f312fbd0 (patch) | |
| tree | b4f6751e15bdfd591e3c80127bdc40f13dca72e8 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 90510aed20a26e1a4dede4ef6b640e6a4122f38f (diff) | |
| download | linux-7ffce225ffe3d9c89f0db3889cc48fe6f312fbd0.tar.xz | |
spi: fsl-spi: Re-organise transfer bits_per_word adaptation
commit 8a5299a1278eadf1e08a598a5345c376206f171e upstream.
For different reasons, fsl-spi driver performs bits_per_word
modifications for different reasons:
- On CPU mode, to minimise amount of interrupts
- On CPM/QE mode to work around controller byte order
For CPU mode that's done in fsl_spi_prepare_message() while
for CPM mode that's done in fsl_spi_setup_transfer().
Reunify all of it in fsl_spi_prepare_message(), and catch
impossible cases early through master's bits_per_word_mask
instead of returning EINVAL later.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/0ce96fe96e8b07cba0613e4097cfd94d09b8919a.1680371809.git.christophe.leroy@csgroup.eu
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions