diff options
| author | Corentin Labbe <clabbe.montjoie@gmail.com> | 2019-09-24 11:08:32 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-10-04 18:06:21 +0300 |
| commit | 554c42b4efd486c322a46420f9cf0f6c767ac02c (patch) | |
| tree | 4661f0436751c31f17198a50e5325958674710ab /drivers/crypto/sunxi-ss/sun4i-ss-cipher.c | |
| parent | 70dd444ad0a023d853b5d84e68226a792bb17a82 (diff) | |
| download | linux-554c42b4efd486c322a46420f9cf0f6c767ac02c.tar.xz | |
crypto: sun4i-ss - enable pm_runtime
This patch enables power management on the Security System.
sun4i-ss now depends on PM because it simplify code and prevent some ifdef.
But this is not a problem since arch maintainer want ARCH_SUNXI to
depend on PM in the future.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/sunxi-ss/sun4i-ss-cipher.c')
| -rw-r--r-- | drivers/crypto/sunxi-ss/sun4i-ss-cipher.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c b/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c index 6536fd4bee65..e5954a643daf 100644 --- a/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c +++ b/drivers/crypto/sunxi-ss/sun4i-ss-cipher.c @@ -480,6 +480,7 @@ int sun4i_ss_cipher_init(struct crypto_tfm *tfm) struct sun4i_tfm_ctx *op = crypto_tfm_ctx(tfm); struct sun4i_ss_alg_template *algt; const char *name = crypto_tfm_alg_name(tfm); + int err; memset(op, 0, sizeof(struct sun4i_tfm_ctx)); @@ -497,13 +498,22 @@ int sun4i_ss_cipher_init(struct crypto_tfm *tfm) return PTR_ERR(op->fallback_tfm); } + err = pm_runtime_get_sync(op->ss->dev); + if (err < 0) + goto error_pm; + return 0; +error_pm: + crypto_free_sync_skcipher(op->fallback_tfm); + return err; } void sun4i_ss_cipher_exit(struct crypto_tfm *tfm) { struct sun4i_tfm_ctx *op = crypto_tfm_ctx(tfm); + crypto_free_sync_skcipher(op->fallback_tfm); + pm_runtime_put(op->ss->dev); } /* check and set the AES key, prepare the mode to be used */ |