A failure of sahara_hw_descriptor_create() with -EINVAL due to scatter list
out of bounds/invalid would not be reported back. This patch just passes on
the -EINVAL so it is visible in sahara_queue_manage().

Signed-off-by: Nicholas Mc Guire <hof...@osadl.org>
---

Patch was only compile tested with imx_v4_v5_defconfig
CONFIG_CRYPTO_HW=y, CONFIG_CRYPTO_DEV_SAHARA=m

Patch is against 3.19.0-rc7 (localversion-next is -next-20150204)

 drivers/crypto/sahara.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c
index 0c790be..a9eeb8b 100644
--- a/drivers/crypto/sahara.c
+++ b/drivers/crypto/sahara.c
@@ -602,6 +602,8 @@ static int sahara_aes_process(struct ablkcipher_request 
*req)
        reinit_completion(&dev->dma_completion);
 
        ret = sahara_hw_descriptor_create(dev);
+       if (!ret)
+               return -EINVAL;
 
        timeout = wait_for_completion_timeout(&dev->dma_completion,
                                msecs_to_jiffies(SAHARA_TIMEOUT_MS));
-- 
1.7.10.4

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