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| author |   Mark Brown <broonie@kernel.org> | 2024-05-29 11:08:05 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-05-29 11:08:05 +0100 |
| commit | b0d8c563f0fb1dba8b10edc2553783f6ad058303 (patch) | |
| tree | dbf13cc6cef1a2d77c8c3a341da19095957a4db3 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | Add optional reset control for Cadence SPI (diff) | |
| parent | spi: wpcm-fiu: differentiate between unsupported and invalid requests (diff) | |
| download | wireguard-linux-b0d8c563f0fb1dba8b10edc2553783f6ad058303.tar.xz wireguard-linux-b0d8c563f0fb1dba8b10edc2553783f6ad058303.zip | |
spi: differentiate between unsupported and invalid
Merge series from Miquel Raynal <miquel.raynal@bootlin.com>:
I am working on spi-nand continuous read support, which lead me to check
what spi controllers were capable of.
>From a caller (and reviewer) point of view, distinguishing between error
cases has been proven useful, especially between two conditions:
- the request is totally unsupported and will never work
- the request is typically out of range somehow but a subsequent call
with corrected parameters might work
So while I was statically reading the various drivers, I attempted to
clarify these situations and thought it might be nice to have this
upstream as well.
As ENOTSUPP is not a SUSV4 code and previous series have already been
merged to reduce its use, I also converted these few cases to EOPNOTSUP
instead, but if anybody doesn't like these changes, it can be dropped.
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
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