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Fix compilation of drivers with -O0 

It is sometimes useful to compile individual drivers with optimization
disabled for easier debugging.  Currently drivers which use htonl() and
similar functions don't compile with -O0.  This patch fixes it.  It also
removes obsolete and misleading comments.  This header is not for
userspace, so we don't have to care about strange programs these comments
mention.

(akpm: -O0 probably isn't a good idea, but this code looks pretty crufty and
unuseful)

Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Michal Schmidt 2007-05-08 00:24:49 -07:00 committed by Linus Torvalds
parent 46595390e9
commit ee7b9e3706
1 changed files with 0 additions and 25 deletions
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25
include/linux/byteorder/generic.h
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@ -124,19 +124,8 @@
#define be32_to_cpus __be32_to_cpus
#define cpu_to_be16s __cpu_to_be16s
#define be16_to_cpus __be16_to_cpus
#endif
#if defined(__KERNEL__)
/*
* Handle ntohl and suches. These have various compatibility
* issues - like we want to give the prototype even though we
* also have a macro for them in case some strange program
* wants to take the address of the thing or something..
*
* Note that these used to return a "long" in libc5, even though
* long is often 64-bit these days.. Thus the casts.
*
* They have to be macros in order to do the constant folding
* correctly - if the argument passed into a inline function
* it is no longer constant according to gcc..
@ -147,17 +136,6 @@
#undef htonl
#undef htons
/*
* Do the prototypes. Somebody might want to take the
* address or some such sick thing..
*/
extern __u32 ntohl(__be32);
extern __be32 htonl(__u32);
extern __u16 ntohs(__be16);
extern __be16 htons(__u16);
#if defined(__GNUC__) && defined(__OPTIMIZE__)
#define ___htonl(x) __cpu_to_be32(x)
#define ___htons(x) __cpu_to_be16(x)
#define ___ntohl(x) __be32_to_cpu(x)
@ -168,9 +146,6 @@ extern __be16 htons(__u16);
#define htons(x) ___htons(x)
#define ntohs(x) ___ntohs(x)
#endif /* OPTIMIZE */
#endif /* KERNEL */
#endif /* _LINUX_BYTEORDER_GENERIC_H */