diff options
| author | Vinícius Tinti <viniciustinti@gmail.com> | 2014-04-04 23:21:24 +0200 |
|---|---|---|
| committer | Behan Webster <behanw@converseincode.com> | 2014-10-14 10:51:22 +0200 |
| commit | 0458a953d85088a9ba3e448745676377775879e0 (patch) | |
| tree | c73eb37def38237f25aba8347443237f25941725 /fs/btrfs/hash.c | |
| parent | crypto: LLVMLinux: Add macro to remove use of VLAIS in crypto code (diff) | |
| download | linux-0458a953d85088a9ba3e448745676377775879e0.tar.xz linux-0458a953d85088a9ba3e448745676377775879e0.zip | |
btrfs: LLVMLinux: Remove VLAIS
Replaced the use of a Variable Length Array In Struct (VLAIS) with a C99
compliant equivalent. This patch instead allocates the appropriate amount of
memory using a char array using the SHASH_DESC_ON_STACK macro.
The new code can be compiled with both gcc and clang.
Signed-off-by: Vinícius Tinti <viniciustinti@gmail.com>
Reviewed-by: Jan-Simon Möller <dl9pf@gmx.de>
Reviewed-by: Mark Charlebois <charlebm@gmail.com>
Signed-off-by: Behan Webster <behanw@converseincode.com>
Acked-by: Chris Mason <clm@fb.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Diffstat (limited to 'fs/btrfs/hash.c')
| -rw-r--r-- | fs/btrfs/hash.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/fs/btrfs/hash.c b/fs/btrfs/hash.c index 64f15bb30a81..aae520b2aee5 100644 --- a/fs/btrfs/hash.c +++ b/fs/btrfs/hash.c @@ -31,18 +31,16 @@ void btrfs_hash_exit(void) u32 btrfs_crc32c(u32 crc, const void *address, unsigned int length) { - struct { - struct shash_desc shash; - char ctx[crypto_shash_descsize(tfm)]; - } desc; + SHASH_DESC_ON_STACK(shash, tfm); + u32 *ctx = (u32 *)shash_desc_ctx(shash); int err; - desc.shash.tfm = tfm; - desc.shash.flags = 0; - *(u32 *)desc.ctx = crc; + shash->tfm = tfm; + shash->flags = 0; + *ctx = crc; - err = crypto_shash_update(&desc.shash, address, length); + err = crypto_shash_update(shash, address, length); BUG_ON(err); - return *(u32 *)desc.ctx; + return *ctx; } |