linux-kernel - [PATCH -next 1/2] drivers: most: use DEFINE

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Date:   Mon, 29 Mar 2021 17:40:14 +0800
From:   Shixin Liu <liushixin2@...wei.com>
To:     Christian Gromm <christian.gromm@...rochip.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     <linux-kernel@...r.kernel.org>, Shixin Liu <liushixin2@...wei.com>
Subject: [PATCH -next 1/2] drivers: most: use DEFINE_SPINLOCK() for spinlock

spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().

Signed-off-by: Shixin Liu <liushixin2@...wei.com>
---
 drivers/most/most_cdev.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/most/most_cdev.c b/drivers/most/most_cdev.c
index 044880760b58..8b69cf3ca60b 100644
--- a/drivers/most/most_cdev.c
+++ b/drivers/most/most_cdev.c
@@ -45,7 +45,7 @@ struct comp_channel {
 
 #define to_channel(d) container_of(d, struct comp_channel, cdev)
 static struct list_head channel_list;
-static spinlock_t ch_list_lock;
+static DEFINE_SPINLOCK(ch_list_lock);
 
 static inline bool ch_has_mbo(struct comp_channel *c)
 {
@@ -495,7 +495,6 @@ static int __init mod_init(void)
 		return PTR_ERR(comp.class);
 
 	INIT_LIST_HEAD(&channel_list);
-	spin_lock_init(&ch_list_lock);
 	ida_init(&comp.minor_id);
 
 	err = alloc_chrdev_region(&comp.devno, 0, CHRDEV_REGION_SIZE, "cdev");
-- 
2.25.1