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| author | Behan Webster <behanw@converseincode.com> | 2014-09-05 16:03:34 -0700 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2014-09-08 19:07:56 +0200 |
| commit | 9f06a8d623b2c3aea09292b844e329fbfb401231 (patch) | |
| tree | e70c1d741f2d74426bd56fb26903e25a3b40042b /net/bluetooth/amp.c | |
| parent | b28b4943660f4e36f118b751ec606c103ba6b1cc (diff) | |
| download | linux-9f06a8d623b2c3aea09292b844e329fbfb401231.tar.bz2 | |
Bluetooth: LLVMLinux: Remove VLAIS from bluetooth/amp.c
Replaced the use of a Variable Length Array In Struct (VLAIS) with a C99
compliant equivalent. This patch allocates the appropriate amount of memory
using an char array.
The new code can be compiled with both gcc and clang.
struct shash_desc contains a flexible array member member ctx declared with
CRYPTO_MINALIGN_ATTR, so sizeof(struct shash_desc) aligns the beginning
of the array declared after struct shash_desc with long long.
No trailing padding is required because it is not a struct type that can
be used in an array.
The CRYPTO_MINALIGN_ATTR is required so that desc is aligned with long long
as would be the case for a struct containing a member with
CRYPTO_MINALIGN_ATTR.
Signed-off-by: Behan Webster <behanw@converseincode.com>
Signed-off-by: Mark Charlebois <charlebm@gmail.com>
Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/amp.c')
| -rw-r--r-- | net/bluetooth/amp.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c index 016cdb66df6c..2640d78f30b8 100644 --- a/net/bluetooth/amp.c +++ b/net/bluetooth/amp.c @@ -149,15 +149,14 @@ static int hmac_sha256(u8 *key, u8 ksize, char *plaintext, u8 psize, u8 *output) if (ret) { BT_DBG("crypto_ahash_setkey failed: err %d", ret); } else { - struct { - struct shash_desc shash; - char ctx[crypto_shash_descsize(tfm)]; - } desc; + char desc[sizeof(struct shash_desc) + + crypto_shash_descsize(tfm)] CRYPTO_MINALIGN_ATTR; + struct shash_desc *shash = (struct shash_desc *)desc; - desc.shash.tfm = tfm; - desc.shash.flags = CRYPTO_TFM_REQ_MAY_SLEEP; + shash->tfm = tfm; + shash->flags = CRYPTO_TFM_REQ_MAY_SLEEP; - ret = crypto_shash_digest(&desc.shash, plaintext, psize, + ret = crypto_shash_digest(shash, plaintext, psize, output); } |