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authorAnssi Hannula <anssi.hannula@iki.fi>2014-06-09 19:16:43 +0300
committerMark Brown <broonie@linaro.org>2014-06-09 21:00:42 +0100
commitc89c7e94bb7d89b39471c79034e3ba1b25d817f5 (patch)
tree66d54740aadc7a1baf67aba55c843748bf2f6ed8 /lib/iomap_copy.c
parente9b383dc940f4cba6876887ecb47df3082ec925e (diff)
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ASoC: fsl_spdif: Fix integer overflow when calculating divisors
The calculation code does u64 = (u32 - u32) * 100000; The 64 bits are of no help here as the type is casted only after the multiplication, and therefore the result may overflow, possibly causing inoptimal or wrong clock setup in an unfortunate case (the maximum result value of the first substraction is currently 47999). Fix the code to cast before multiplication. Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi> Acked-by: Nicolin Chen <Guangyu.Chen@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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