From 03a6f29000fdc13adc2bb2e22efd07a51d334154 Mon Sep 17 00:00:00 2001 From: Gary R Hook Date: Wed, 16 Mar 2016 09:02:26 -0500 Subject: crypto: ccp - fix lock acquisition code This patch simplifies an unneeded read-write lock. Signed-off-by: Gary R Hook Signed-off-by: Herbert Xu --- drivers/crypto/ccp/ccp-dev.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) 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 DEFINE_RWLOCK(ccp_unit_lock); 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 @@ static struct ccp_device *ccp_get_device(void) */ 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); -- cgit v1.1