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| author | Anton Blanchard <anton@samba.org> | 2005-08-26 18:34:07 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-08-26 19:37:11 -0700 |
| commit | 32818c2eb6b83ea5065c89e0c3cf774abc4dc02b (patch) | |
| tree | 909eed391340511798a80a4e693b401b61ef1e50 /include | |
| parent | 212d6d2237f60bc28c1518f8abf9d3ed6c17574a (diff) | |
| download | linux-32818c2eb6b83ea5065c89e0c3cf774abc4dc02b.tar.gz linux-32818c2eb6b83ea5065c89e0c3cf774abc4dc02b.tar.bz2 linux-32818c2eb6b83ea5065c89e0c3cf774abc4dc02b.zip | |
[PATCH] ppc64: Fix issue with gcc 4.0 compiled kernels
I recently had a BUG_ON() go off spuriously on a gcc 4.0 compiled kernel.
It turns out gcc-4.0 was removing a sign extension while earlier gcc
versions would not. Thinking this to be a compiler bug, I submitted a
report:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23422
It turns out we need to cast the input in order to tell gcc to sign extend
it.
Thanks to Andrew Pinski for his help on this bug.
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-ppc64/bug.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/asm-ppc64/bug.h b/include/asm-ppc64/bug.h index 169868fa307d..160178278861 100644 --- a/include/asm-ppc64/bug.h +++ b/include/asm-ppc64/bug.h @@ -43,8 +43,8 @@ struct bug_entry *find_bug(unsigned long bugaddr); ".section __bug_table,\"a\"\n\t" \ " .llong 1b,%1,%2,%3\n" \ ".previous" \ - : : "r" (x), "i" (__LINE__), "i" (__FILE__), \ - "i" (__FUNCTION__)); \ + : : "r" ((long long)(x)), "i" (__LINE__), \ + "i" (__FILE__), "i" (__FUNCTION__)); \ } while (0) #define WARN_ON(x) do { \ @@ -53,7 +53,8 @@ struct bug_entry *find_bug(unsigned long bugaddr); ".section __bug_table,\"a\"\n\t" \ " .llong 1b,%1,%2,%3\n" \ ".previous" \ - : : "r" (x), "i" (__LINE__ + BUG_WARNING_TRAP), \ + : : "r" ((long long)(x)), \ + "i" (__LINE__ + BUG_WARNING_TRAP), \ "i" (__FILE__), "i" (__FUNCTION__)); \ } while (0) |