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author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2020-03-19 09:12:26 -0700 |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-03-30 11:50:49 +1100 |
commit | 8483c831b9f3fca2219ac45f361386a1233f6c9b (patch) | |
tree | 2927ee52b53bf6881ed980f2b478b57b46f83661 | |
parent | f0ac02c791a178df807c0a079a2372b8d825652b (diff) | |
download | linux-8483c831b9f3fca2219ac45f361386a1233f6c9b.tar.bz2 |
crypto: caam - use struct hwrng's .init for initialization
Make caamrng code a bit more symmetric by moving initialization code
to .init hook of struct hwrng.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Horia Geantă <horia.geanta@nxp.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Iuliana Prodan <iuliana.prodan@nxp.com>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-imx@nxp.com
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-rw-r--r-- | drivers/crypto/caam/caamrng.c | 47 |
1 files changed, 24 insertions, 23 deletions
diff --git a/drivers/crypto/caam/caamrng.c b/drivers/crypto/caam/caamrng.c index 34cbb4a56f05..69a02ac5de54 100644 --- a/drivers/crypto/caam/caamrng.c +++ b/drivers/crypto/caam/caamrng.c @@ -256,6 +256,7 @@ static void caam_cleanup(struct hwrng *rng) } rng_unmap_ctx(rng_ctx); + caam_jr_free(rng_ctx->jrdev); } static int caam_init_buf(struct caam_rng_ctx *ctx, int buf_id) @@ -274,28 +275,43 @@ static int caam_init_buf(struct caam_rng_ctx *ctx, int buf_id) return 0; } -static int caam_init_rng(struct caam_rng_ctx *ctx, struct device *jrdev) +static int caam_init(struct hwrng *rng) { + struct caam_rng_ctx *ctx = rng_ctx; int err; - ctx->jrdev = jrdev; + ctx->jrdev = caam_jr_alloc(); + err = PTR_ERR_OR_ZERO(ctx->jrdev); + if (err) { + pr_err("Job Ring Device allocation for transform failed\n"); + return err; + } err = rng_create_sh_desc(ctx); if (err) - return err; + goto free_jrdev; ctx->current_buf = 0; ctx->cur_buf_idx = 0; err = caam_init_buf(ctx, 0); if (err) - return err; + goto free_jrdev; + + err = caam_init_buf(ctx, 1); + if (err) + goto free_jrdev; - return caam_init_buf(ctx, 1); + return 0; + +free_jrdev: + caam_jr_free(ctx->jrdev); + return err; } static struct hwrng caam_rng = { .name = "rng-caam", + .init = caam_init, .cleanup = caam_cleanup, .read = caam_read, }; @@ -305,14 +321,12 @@ void caam_rng_exit(void) if (!init_done) return; - caam_jr_free(rng_ctx->jrdev); hwrng_unregister(&caam_rng); kfree(rng_ctx); } int caam_rng_init(struct device *ctrldev) { - struct device *dev; u32 rng_inst; struct caam_drv_private *priv = dev_get_drvdata(ctrldev); int err; @@ -328,21 +342,11 @@ int caam_rng_init(struct device *ctrldev) if (!rng_inst) return 0; - dev = caam_jr_alloc(); - if (IS_ERR(dev)) { - pr_err("Job Ring Device allocation for transform failed\n"); - return PTR_ERR(dev); - } rng_ctx = kmalloc(sizeof(*rng_ctx), GFP_DMA | GFP_KERNEL); - if (!rng_ctx) { - err = -ENOMEM; - goto free_caam_alloc; - } - err = caam_init_rng(rng_ctx, dev); - if (err) - goto free_rng_ctx; + if (!rng_ctx) + return -ENOMEM; - dev_info(dev, "registering rng-caam\n"); + dev_info(ctrldev, "registering rng-caam\n"); err = hwrng_register(&caam_rng); if (!err) { @@ -350,9 +354,6 @@ int caam_rng_init(struct device *ctrldev) return err; } -free_rng_ctx: kfree(rng_ctx); -free_caam_alloc: - caam_jr_free(dev); return err; } |