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| author | Antoine Tenart <antoine.tenart@bootlin.com> | 2018-02-13 09:26:54 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-02-22 22:16:26 +0800 |
| commit | 95831ceafc0de7d94a5fe86ebb1c2042317cc2cd (patch) | |
| tree | ed8b14f514670d3db8099a86ff134db2c606a490 /drivers/crypto/inside-secure | |
| parent | 666a9c70b04fccabde5cea5e680ae1ae92460a62 (diff) | |
| download | linux-95831ceafc0de7d94a5fe86ebb1c2042317cc2cd.tar.bz2 | |
crypto: inside-secure - do not process request if no command was issued
This patch adds a check in the SafeXcel dequeue function, to avoid
processing request further if no hardware command was issued. This can
happen in certain cases where the ->send() function caches all the data
that would have been send.
Fixes: 809778e02cd4 ("crypto: inside-secure - fix hash when length is a multiple of a block")
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/inside-secure')
| -rw-r--r-- | drivers/crypto/inside-secure/safexcel.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c index 5cb90bcd3f18..0642d7181c9e 100644 --- a/drivers/crypto/inside-secure/safexcel.c +++ b/drivers/crypto/inside-secure/safexcel.c @@ -490,6 +490,15 @@ handle_req: if (backlog) backlog->complete(backlog, -EINPROGRESS); + /* In case the send() helper did not issue any command to push + * to the engine because the input data was cached, continue to + * dequeue other requests as this is valid and not an error. + */ + if (!commands && !results) { + kfree(request); + continue; + } + spin_lock_bh(&priv->ring[ring].egress_lock); list_add_tail(&request->list, &priv->ring[ring].list); spin_unlock_bh(&priv->ring[ring].egress_lock); |