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| author | Iuliana Prodan <iuliana.prodan@nxp.com> | 2020-02-12 20:55:20 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-02-22 04:25:47 +0300 |
| commit | 4d370a1036958d7df9f1492c345b4984a4eba7f6 (patch) | |
| tree | 77113940ba078bb828036aec4d3a00f321ac81ab /drivers/crypto/caam/caamrng.c | |
| parent | d53e44fe980ba7325ac60f85312c9facf78fbba1 (diff) | |
| download | linux-4d370a1036958d7df9f1492c345b4984a4eba7f6.tar.xz | |
crypto: caam - change return code in caam_jr_enqueue function
Based on commit 6b80ea389a0b ("crypto: change transient busy return code to -ENOSPC"),
change the return code of caam_jr_enqueue function to -EINPROGRESS, in
case of success, -ENOSPC in case the CAAM is busy (has no space left
in job ring queue), -EIO if it cannot map the caller's descriptor.
Update, also, the cases for resource-freeing for each algorithm type.
This is done for later use, on backlogging support in CAAM.
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Horia Geanta <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/caam/caamrng.c')
| -rw-r--r-- | drivers/crypto/caam/caamrng.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/crypto/caam/caamrng.c b/drivers/crypto/caam/caamrng.c index e8baacaabe07..34cbb4a56f05 100644 --- a/drivers/crypto/caam/caamrng.c +++ b/drivers/crypto/caam/caamrng.c @@ -133,7 +133,7 @@ static inline int submit_job(struct caam_rng_ctx *ctx, int to_current) dev_dbg(jrdev, "submitting job %d\n", !(to_current ^ ctx->current_buf)); init_completion(&bd->filled); err = caam_jr_enqueue(jrdev, desc, rng_done, ctx); - if (err) + if (err != -EINPROGRESS) complete(&bd->filled); /* don't wait on failed job*/ else atomic_inc(&bd->empty); /* note if pending */ @@ -153,7 +153,7 @@ static int caam_read(struct hwrng *rng, void *data, size_t max, bool wait) if (atomic_read(&bd->empty) == BUF_EMPTY) { err = submit_job(ctx, 1); /* if can't submit job, can't even wait */ - if (err) + if (err != -EINPROGRESS) return 0; } /* no immediate data, so exit if not waiting */ |