From: Zheng Yongjun <zhengyongjun3@huawei.com>
Date: Thu, 24 Dec 2020 13:22:54 +0000 (+0800)
Subject: dma: idxd: use DEFINE_MUTEX() for mutex lock
X-Git-Tag: v5.11.22~172
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=24c6dac48370457089e450a87a2bdcf86e26c351;p=thirdparty%2Fkernel%2Fstable.git

dma: idxd: use DEFINE_MUTEX() for mutex lock

[ Upstream commit e2fcd6e427c2fae92b366b24759f95d77b6f7bc7 ]

mutex lock can be initialized automatically with DEFINE_MUTEX()
rather than explicitly calling mutex_init().

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20201224132254.30961-1-zhengyongjun3@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
index ababd059da6f3..d223242a34f48 100644
--- a/drivers/dma/idxd/init.c
+++ b/drivers/dma/idxd/init.c
@@ -31,7 +31,7 @@ MODULE_AUTHOR("Intel Corporation");
 bool support_enqcmd;
 
 static struct idr idxd_idrs[IDXD_TYPE_MAX];
-static struct mutex idxd_idr_lock;
+static DEFINE_MUTEX(idxd_idr_lock);
 
 static struct pci_device_id idxd_pci_tbl[] = {
 	/* DSA ver 1.0 platforms */
@@ -543,7 +543,6 @@ static int __init idxd_init_module(void)
 	else
 		support_enqcmd = true;
 
-	mutex_init(&idxd_idr_lock);
 	for (i = 0; i < IDXD_TYPE_MAX; i++)
 		idr_init(&idxd_idrs[i]);