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| author | Lokesh Vutla <lokeshvutla@ti.com> | 2016-08-04 13:28:43 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-09-13 20:22:06 +0800 |
| commit | 164f3ef301bff9741a00ff7015f9d51f1b864201 (patch) | |
| tree | 8619ca311244efbd0f77bce041bc17ba7f3a4118 /drivers/crypto/omap-aes.c | |
| parent | f303b455bb95233297c179b525a851a792e469b2 (diff) | |
| download | lwn-164f3ef301bff9741a00ff7015f9d51f1b864201.tar.gz lwn-164f3ef301bff9741a00ff7015f9d51f1b864201.zip | |
crypto: omap-aes - Add support for multiple cores
Some SoCs like omap4/omap5/dra7 contain multiple AES crypto accelerator
cores. Adapt the driver to support this. The driver picks the last used
device from a list of AES devices.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
[t-kristo@ti.com: forward ported to 4.7 kernel]
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/omap-aes.c')
| -rw-r--r-- | drivers/crypto/omap-aes.c | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index f2aae4a3cbcc..7615026709fe 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -330,20 +330,12 @@ static void omap_aes_dma_stop(struct omap_aes_dev *dd) static struct omap_aes_dev *omap_aes_find_dev(struct omap_aes_ctx *ctx) { - struct omap_aes_dev *dd = NULL, *tmp; + struct omap_aes_dev *dd; spin_lock_bh(&list_lock); - if (!ctx->dd) { - list_for_each_entry(tmp, &dev_list, list) { - /* FIXME: take fist available aes core */ - dd = tmp; - break; - } - ctx->dd = dd; - } else { - /* already found before */ - dd = ctx->dd; - } + dd = list_first_entry(&dev_list, struct omap_aes_dev, list); + list_move_tail(&dd->list, &dev_list); + ctx->dd = dd; spin_unlock_bh(&list_lock); return dd; @@ -616,7 +608,7 @@ static int omap_aes_prepare_req(struct crypto_engine *engine, { struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx( crypto_ablkcipher_reqtfm(req)); - struct omap_aes_dev *dd = omap_aes_find_dev(ctx); + struct omap_aes_dev *dd = ctx->dd; struct omap_aes_reqctx *rctx; if (!dd) @@ -662,7 +654,7 @@ static int omap_aes_crypt_req(struct crypto_engine *engine, { struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx( crypto_ablkcipher_reqtfm(req)); - struct omap_aes_dev *dd = omap_aes_find_dev(ctx); + struct omap_aes_dev *dd = ctx->dd; if (!dd) return -ENODEV; |