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Unverified Commit f60d7270 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Mark Brown
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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: 7d93aecd ("spi: Add generic support for unused native cs with cs-gpios")
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210420164425.40287-2-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent dbaca8e5
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