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authorKevin Hilman <khilman@linaro.org>2013-12-20 08:59:04 -0800
committerKevin Hilman <khilman@linaro.org>2013-12-20 08:59:30 -0800
commit490b929d42d2a321887f9538a83fc9f215675f15 (patch)
tree04fe7161f92c568839605f92c8f1c8730216f739 /include/crypto/algapi.h
parent23621799f24c3c4e8e8dcdf5fdeb3ebd2be148f9 (diff)
parentef43eff3447f30b4a3cfc61813902c2e57c20245 (diff)
Merge branch 'efm32/soc' into next/soc
From Uwe Kleine-König: * efm32/soc: (1003 commits) ARM: device trees for Energy Micro's EFM32 Cortex-M3 SoCs ARM: new platform for Energy Micro's EFM32 Cortex-M3 SoCs +Linux 3.13-rc4 Signed-off-by: Kevin Hilman <khilman@linaro.org>
Diffstat (limited to 'include/crypto/algapi.h')
-rw-r--r--include/crypto/algapi.h18
1 files changed, 17 insertions, 1 deletions
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 418d270e1806..e73c19e90e38 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -386,5 +386,21 @@ static inline int crypto_requires_sync(u32 type, u32 mask)
return (type ^ CRYPTO_ALG_ASYNC) & mask & CRYPTO_ALG_ASYNC;
}
-#endif /* _CRYPTO_ALGAPI_H */
+noinline unsigned long __crypto_memneq(const void *a, const void *b, size_t size);
+
+/**
+ * crypto_memneq - Compare two areas of memory without leaking
+ * timing information.
+ *
+ * @a: One area of memory
+ * @b: Another area of memory
+ * @size: The size of the area.
+ *
+ * Returns 0 when data is equal, 1 otherwise.
+ */
+static inline int crypto_memneq(const void *a, const void *b, size_t size)
+{
+ return __crypto_memneq(a, b, size) != 0UL ? 1 : 0;
+}
+#endif /* _CRYPTO_ALGAPI_H */