Patchwork [06/14] crc32.c in its original version freely mixed u32, __le32 and __be32 types

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Submitter Darrick J. Wong
Date Nov. 28, 2011, 10:37 p.m.
Message ID <20111128223745.28705.87905.stgit@elm3c44.beaverton.ibm.com>
Download mbox | patch
Permalink /patch/128098/
State Superseded
Headers show

Comments

Darrick J. Wong - Nov. 28, 2011, 10:37 p.m.
which caused warnings from sparse with __CHECK_ENDIAN__.
This patch fixes these by forcing the types to u32.

Signed-off-by: Bob Pearson <rpearson@systemfabricworks.com>
---
 lib/crc32.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)



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Patch

diff --git a/lib/crc32.c b/lib/crc32.c
index 2a87ea2..ff6bb9a 100644
--- a/lib/crc32.c
+++ b/lib/crc32.c
@@ -28,13 +28,13 @@ 
 #include "crc32defs.h"
 
 #if CRC_LE_BITS == 8
-# define tole(x) __constant_cpu_to_le32(x)
+# define tole(x) (__force u32) __constant_cpu_to_le32(x)
 #else
 # define tole(x) (x)
 #endif
 
 #if CRC_BE_BITS == 8
-# define tobe(x) __constant_cpu_to_be32(x)
+# define tobe(x) (__force u32) __constant_cpu_to_be32(x)
 #else
 # define tobe(x) (x)
 #endif
@@ -128,9 +128,9 @@  u32 __pure crc32_le(u32 crc, unsigned char const *p, size_t len)
 # elif CRC_LE_BITS == 8
 	const u32      (*tab)[] = crc32table_le;
 
-	crc = __cpu_to_le32(crc);
+	crc = (__force u32) __cpu_to_le32(crc);
 	crc = crc32_body(crc, p, len, tab);
-	crc = __le32_to_cpu(crc);
+	crc = __le32_to_cpu((__force __le32)crc);
 #endif
 	return crc;
 }
@@ -171,9 +171,9 @@  u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len)
 # elif CRC_BE_BITS == 8
 	const u32      (*tab)[] = crc32table_be;
 
-	crc = __cpu_to_be32(crc);
+	crc = (__force u32) __cpu_to_be32(crc);
 	crc = crc32_body(crc, p, len, tab);
-	crc = __be32_to_cpu(crc);
+	crc = __be32_to_cpu((__force __be32)crc);
 # endif
 	return crc;
 }