From: Antoine Ténart <antoine.tenart@free-electrons.com>
Date: Thu, 15 Jun 2017 07:56:29 +0000 (+0200)
Subject: crypto: inside-secure - use the base_end pointer in ring rollback
X-Git-Tag: v4.13-rc1~158^2~9
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=cfb73f89534fb246155a05a52d63559cb5d58749;p=linux.git

crypto: inside-secure - use the base_end pointer in ring rollback

A base_end pointer is set and provided. Use it in the ring rollback
function to avoid using build-in defines.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/inside-secure/safexcel_ring.c b/drivers/crypto/inside-secure/safexcel_ring.c
index fdbf05ae55fc..c9d2a8716b5b 100644
--- a/drivers/crypto/inside-secure/safexcel_ring.c
+++ b/drivers/crypto/inside-secure/safexcel_ring.c
@@ -84,7 +84,7 @@ void safexcel_ring_rollback_wptr(struct safexcel_crypto_priv *priv,
 		return;
 
 	if (ring->write == ring->base)
-		ring->write += (EIP197_DEFAULT_RING_SIZE - 1) * ring->offset;
+		ring->write = ring->base_end - ring->offset;
 	else
 		ring->write -= ring->offset;