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| author |   David McKay <david.mckay@codasip.com> | 2024-01-04 09:40:10 +0000 |
|---|---|---|
| committer |   Arnd Bergmann <arnd@arndb.de> | 2024-01-05 23:19:14 +0100 |
| commit | d93cca2f3109f88c94a32d3322ec8b2854a9c339 (patch) | |
| tree | 1b00871dbfab6e39c9aa8bef5bdf52e6ff46e9aa /include/asm-generic | |
| parent | Hexagon: Make pfn accessors statics inlines (diff) | |
| download | wireguard-linux-d93cca2f3109f88c94a32d3322ec8b2854a9c339.tar.xz wireguard-linux-d93cca2f3109f88c94a32d3322ec8b2854a9c339.zip | |
asm-generic: Fix 32 bit __generic_cmpxchg_local
Commit 656e9007ef58 ("asm-generic: avoid __generic_cmpxchg_local
warnings") introduced a typo that means the code is incorrect for 32 bit
values. It will work fine for postive numbers, but will fail for
negative numbers on a system where longs are 64 bit.
Fixes: 656e9007ef58 ("asm-generic: avoid __generic_cmpxchg_local warnings")
Signed-off-by: David McKay <david.mckay@codasip.com>
Signed-off-by: Stuart Menefy <stuart.menefy@codasip.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/cmpxchg-local.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-generic/cmpxchg-local.h b/include/asm-generic/cmpxchg-local.h index 3df9f59a544e..f27d66fdc00a 100644 --- a/include/asm-generic/cmpxchg-local.h +++ b/include/asm-generic/cmpxchg-local.h @@ -34,7 +34,7 @@ static inline unsigned long __generic_cmpxchg_local(volatile void *ptr, *(u16 *)ptr = (new & 0xffffu); break; case 4: prev = *(u32 *)ptr; - if (prev == (old & 0xffffffffffu)) + if (prev == (old & 0xffffffffu)) *(u32 *)ptr = (new & 0xffffffffu); break; case 8: prev = *(u64 *)ptr; |