From 94eaa1bd7ca67e8f57919da96cbb41c215ef20cb Mon Sep 17 00:00:00 2001
From: Patrick McHardy <kaber@trash.net>
Date: Wed, 7 May 2008 22:32:28 +0800
Subject: [PATCH] [HIFN]: Handle ablkcipher_walk errors
ablkcipher_walk may return a negative error value, handle this properly
instead of treating it as a huge number of scatter-gather elements.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
drivers/crypto/hifn_795x.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
index cce6e6f1baa5..4e89cd8f664f 100644
--- a/drivers/crypto/hifn_795x.c
+++ b/drivers/crypto/hifn_795x.c
@@ -1602,7 +1602,10 @@ static int hifn_setup_session(struct ablkcipher_request *req)
idx = 0;
sg_num = ablkcipher_walk(req, &ctx->walk);
-
+ if (sg_num < 0) {
+ err = sg_num;
+ goto err_out_exit;
+ }
atomic_set(&ctx->sg_num, sg_num);
spin_lock_irqsave(&dev->lock, flags);
--
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