linux-kernel - [PATCH v2 -next] dma: idxd: use DEFINE

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Date:   Thu, 24 Dec 2020 21:22:54 +0800
From:   Zheng Yongjun <zhengyongjun3@...wei.com>
To:     <vkoul@...nel.org>, <dmaengine@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <dave.jiang@...el.com>, <dan.j.williams@...el.com>,
        Zheng Yongjun <zhengyongjun3@...wei.com>
Subject: [PATCH v2 -next] dma: idxd: use DEFINE_MUTEX() for mutex lock

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

Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
---
 drivers/dma/idxd/init.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
index 0a4432b063b5..2297c93dd527 100644
--- a/drivers/dma/idxd/init.c
+++ b/drivers/dma/idxd/init.c
@@ -27,7 +27,7 @@ MODULE_AUTHOR("Intel Corporation");
 #define DRV_NAME "idxd"
 
 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 */
@@ -481,7 +481,6 @@ static int __init idxd_init_module(void)
 	pr_info("%s: Intel(R) Accelerator Devices Driver %s\n",
 		DRV_NAME, IDXD_DRIVER_VERSION);
 
-	mutex_init(&idxd_idr_lock);
 	for (i = 0; i < IDXD_TYPE_MAX; i++)
 		idr_init(&idxd_idrs[i]);
 
-- 
2.22.0