lib: crc32: Add some additional __pure annotations

In case they help the compiler.

Signed-off-by: George Spelvin <linux@horizon.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/include/linux/crc32.h b/include/linux/crc32.h
index edf34e876e40..9e8a032c1788 100644
--- a/include/linux/crc32.h
+++ b/include/linux/crc32.h
@@ -8,8 +8,8 @@
 #include <linux/types.h>
 #include <linux/bitrev.h>
 
-extern u32  crc32_le(u32 crc, unsigned char const *p, size_t len);
-extern u32  crc32_be(u32 crc, unsigned char const *p, size_t len);
+u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len);
+u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len);
 
 /**
  * crc32_le_combine - Combine two crc32 check values into one. For two
@@ -36,7 +36,7 @@ static inline u32 crc32_le_combine(u32 crc1, u32 crc2, size_t len2)
         return crc32_le_shift(crc1, len2) ^ crc2;
 }
 
-extern u32  __crc32c_le(u32 crc, unsigned char const *p, size_t len);
+u32 __pure __crc32c_le(u32 crc, unsigned char const *p, size_t len);
 
 /**
  * __crc32c_le_combine - Combine two crc32c check values into one. For two