crypto: ccp - fix lock acquisition code
This patch simplifies an unneeded read-write lock.
Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c
index 336e5b7..4dbc187 100644
--- a/drivers/crypto/ccp/ccp-dev.c
+++ b/drivers/crypto/ccp/ccp-dev.c
@@ -53,7 +53,7 @@
static LIST_HEAD(ccp_units);
/* Round-robin counter */
-static DEFINE_RWLOCK(ccp_rr_lock);
+static DEFINE_SPINLOCK(ccp_rr_lock);
static struct ccp_device *ccp_rr;
/* Ever-increasing value to produce unique unit numbers */
@@ -128,14 +128,14 @@
*/
read_lock_irqsave(&ccp_unit_lock, flags);
if (!list_empty(&ccp_units)) {
- write_lock_irqsave(&ccp_rr_lock, flags);
+ spin_lock(&ccp_rr_lock);
dp = ccp_rr;
if (list_is_last(&ccp_rr->entry, &ccp_units))
ccp_rr = list_first_entry(&ccp_units, struct ccp_device,
entry);
else
ccp_rr = list_next_entry(ccp_rr, entry);
- write_unlock_irqrestore(&ccp_rr_lock, flags);
+ spin_unlock(&ccp_rr_lock);
}
read_unlock_irqrestore(&ccp_unit_lock, flags);