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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-04-20 19:44:25 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-04-21 17:49:54 +0300 |
| commit | f60d7270c8a3d2beb1c23ae0da42497afa3584c2 (patch) | |
| tree | 546b47407e4e4b72205acb74be341a2c9b518887 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | dbaca8e56ea3f23fa215f48c2d46dd03ede06e02 (diff) | |
| download | linux-f60d7270c8a3d2beb1c23ae0da42497afa3584c2.tar.xz | |
spi: Avoid undefined behaviour when counting unused native CSs
ffz(), that has been used to count unused native CSs,
might cause undefined behaviour when called against ~0U.
To fix that, open code it with ffs(~value) - 1.
Fixes: 7d93aecdb58d ("spi: Add generic support for unused native cs with cs-gpios")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210420164425.40287-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions