From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Mon, 8 Aug 2016 17:04:47 +0000 (+0100)
Subject: crypto: caam - mark the hardware descriptor as cache line aligned
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=d7b24ed4a9a4250f483f4c2fea3588828ab43af2;p=deliverable%2Flinux.git

crypto: caam - mark the hardware descriptor as cache line aligned

Mark the hardware descriptor as being cache line aligned; on DMA
incoherent architectures, the hardware descriptor should sit in a
separate cache line from the CPU accessed data to avoid polluting
the caches.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
index 683a945e10aa..faf3d1bbcce9 100644
--- a/drivers/crypto/caam/caamhash.c
+++ b/drivers/crypto/caam/caamhash.c
@@ -604,7 +604,7 @@ struct ahash_edesc {
 	int src_nents;
 	int sec4_sg_bytes;
 	struct sec4_sg_entry *sec4_sg;
-	u32 hw_desc[DESC_JOB_IO_LEN / sizeof(u32)];
+	u32 hw_desc[DESC_JOB_IO_LEN / sizeof(u32)] ____cacheline_aligned;
 };
 
 static inline void ahash_unmap(struct device *dev,