[PATCH 4.4 45/57] crypto: atmel - only treat EBUSY as transient if backlog

From	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Newsgroups	linux.kernel
Subject	[PATCH 4.4 45/57] crypto: atmel - only treat EBUSY as transient if backlog
Date	2017-07-19 13:20 +0200
Message-ID	<u4Vbl-7Nz-33@gated-at.bofh.it> (permalink)
References	<u4Vbk-7Nz-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Gilad Ben-Yossef <gilad@benyossef.com>

commit 1606043f214f912a52195293614935811a6e3e53 upstream.

The Atmel SHA driver was treating -EBUSY as indication of queueing
to backlog without checking that backlog is enabled for the request.

Fix it by checking request flags.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/crypto/atmel-sha.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/crypto/atmel-sha.c
+++ b/drivers/crypto/atmel-sha.c
@@ -963,7 +963,9 @@ static int atmel_sha_finup(struct ahash_
 	ctx->flags |= SHA_FLAGS_FINUP;
 
 	err1 = atmel_sha_update(req);
-	if (err1 == -EINPROGRESS || err1 == -EBUSY)
+	if (err1 == -EINPROGRESS ||
+	    (err1 == -EBUSY && (ahash_request_flags(req) &
+				CRYPTO_TFM_REQ_MAY_BACKLOG)))
 		return err1;
 
 	/*

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

[PATCH 4.4 45/57] crypto: atmel - only treat EBUSY as transient if backlog Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-19 13:20 +0200

csiph-web