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| author | Gary R Hook <gary.hook@amd.com> | 2016-03-16 09:02:26 -0500 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-03-17 19:09:02 +0800 |
| commit | 03a6f29000fdc13adc2bb2e22efd07a51d334154 (patch) | |
| tree | 6bcfe5e38d88a74da2086b40eaea3dad0fd24af3 /drivers/crypto/ccp | |
| parent | d1558f4e95cb14b0fff5c0b839c15a21f7e8aed0 (diff) | |
| download | linux-03a6f29000fdc13adc2bb2e22efd07a51d334154.tar.gz linux-03a6f29000fdc13adc2bb2e22efd07a51d334154.tar.bz2 linux-03a6f29000fdc13adc2bb2e22efd07a51d334154.zip | |
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>
Diffstat (limited to 'drivers/crypto/ccp')
| -rw-r--r-- | drivers/crypto/ccp/ccp-dev.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/crypto/ccp/ccp-dev.c b/drivers/crypto/ccp/ccp-dev.c index 336e5b780fcb..4dbc18727235 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); |