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| author | Eric Biggers <ebiggers@google.com> | 2020-07-08 18:39:43 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-07-16 13:49:05 +0200 |
| commit | 9d4cafa5a04aeba68cc12de47ffcd975079e2f83 (patch) | |
| tree | bcd185a9b96094033b07264cdde730c2210d5e74 | |
| parent | mptcp: use sha256() instead of open coding (diff) | |
| download | linux-9d4cafa5a04aeba68cc12de47ffcd975079e2f83.tar.xz linux-9d4cafa5a04aeba68cc12de47ffcd975079e2f83.zip | |
ASoC: cros_ec_codec: use sha256() instead of open coding
Now that there's a function that calculates the SHA-256 digest of a
buffer in one step, use it instead of sha256_init() + sha256_update() +
sha256_final().
Also simplify the code by inlining calculate_sha256() into its caller
and switching a debug log statement to use %*phN instead of bin2hex().
Acked-by: Tzung-Bi Shih <tzungbi@google.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Cc: alsa-devel@alsa-project.org
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Cheng-Yi Chiang <cychiang@chromium.org>
Cc: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Tzung-Bi Shih <tzungbi@google.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | sound/soc/codecs/cros_ec_codec.c | 27 |
1 files changed, 2 insertions, 25 deletions
diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c index 8d45c628e988..ab009c7dfdf4 100644 --- a/sound/soc/codecs/cros_ec_codec.c +++ b/sound/soc/codecs/cros_ec_codec.c @@ -103,28 +103,6 @@ error: return ret; } -static int calculate_sha256(struct cros_ec_codec_priv *priv, - uint8_t *buf, uint32_t size, uint8_t *digest) -{ - struct sha256_state sctx; - - sha256_init(&sctx); - sha256_update(&sctx, buf, size); - sha256_final(&sctx, digest); - -#ifdef DEBUG - { - char digest_str[65]; - - bin2hex(digest_str, digest, 32); - digest_str[64] = 0; - dev_dbg(priv->dev, "hash=%s\n", digest_str); - } -#endif - - return 0; -} - static int dmic_get_gain(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { @@ -782,9 +760,8 @@ static int wov_hotword_model_put(struct snd_kcontrol *kcontrol, if (IS_ERR(buf)) return PTR_ERR(buf); - ret = calculate_sha256(priv, buf, size, digest); - if (ret) - goto leave; + sha256(buf, size, digest); + dev_dbg(priv->dev, "hash=%*phN\n", SHA256_DIGEST_SIZE, digest); p.cmd = EC_CODEC_WOV_GET_LANG; ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_WOV, |