diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2006-09-20 15:58:51 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-09-20 15:58:51 +0200 |
| commit | 39b083fe1c3c7b88939f6fa1b0b96e579f12e96f (patch) | |
| tree | b56864fed4a0aa286696cb4e63cbea6d8a962c8a /include/asm-s390/io.h | |
| parent | ff6b8ea68f4b7353f88b97024f28127e2148aa00 (diff) | |
[S390] empty function defines.
Use do { } while (0) constructs instead of empty defines to avoid
subtle compile bugs.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390/io.h')
| -rw-r--r-- | include/asm-s390/io.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-s390/io.h b/include/asm-s390/io.h index d4614b35f423..a6cc27e77007 100644 --- a/include/asm-s390/io.h +++ b/include/asm-s390/io.h @@ -116,7 +116,7 @@ extern void iounmap(void *addr); #define outb(x,addr) ((void) writeb(x,addr)) #define outb_p(x,addr) outb(x,addr) -#define mmiowb() +#define mmiowb() do { } while (0) /* * Convert a physical pointer to a virtual kernel pointer for /dev/mem |