diff mbox

staging: gdm724x: Replace semaphore netlink with mutex

Message ID 1465828160-17141-1-git-send-email-binoy.jayan@linaro.org
State Superseded
Headers show

Commit Message

Binoy Jayan June 13, 2016, 2:29 p.m. UTC
Replace semaphore netlink_mutex with mutex. Semaphores are
going away in the future.

Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org>

---
 drivers/staging/gdm724x/netlink_k.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

-- 
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a Linux Foundation Collaborative Project

Comments

Arnd Bergmann June 13, 2016, 3:48 p.m. UTC | #1
On Monday, June 13, 2016 7:59:20 PM CEST Binoy Jayan wrote:
> 

> -#if defined(DEFINE_MUTEX)

> -static DEFINE_MUTEX(netlink_mutex);

> -#else

> -static struct semaphore netlink_mutex;

> -#define mutex_lock(x)          down(x)

> -#define mutex_unlock(x)                up(x)

> -#endif

> +static struct mutex netlink_mutex;

> 


Good catch! I think the patch is correct, but the DEFINE_MUTEX
here seems preferable over the runtime mutex_init() call.

	Arnd
diff mbox

Patch

diff --git a/drivers/staging/gdm724x/netlink_k.c b/drivers/staging/gdm724x/netlink_k.c
index a0232e8..57db83d 100644
--- a/drivers/staging/gdm724x/netlink_k.c
+++ b/drivers/staging/gdm724x/netlink_k.c
@@ -21,13 +21,7 @@ 
 
 #include "netlink_k.h"
 
-#if defined(DEFINE_MUTEX)
-static DEFINE_MUTEX(netlink_mutex);
-#else
-static struct semaphore netlink_mutex;
-#define mutex_lock(x)		down(x)
-#define mutex_unlock(x)		up(x)
-#endif
+static struct mutex netlink_mutex;
 
 #define ND_MAX_GROUP		30
 #define ND_IFINDEX_LEN		sizeof(int)
@@ -96,9 +90,7 @@  struct sock *netlink_init(int unit,
 		.input  = netlink_rcv,
 	};
 
-#if !defined(DEFINE_MUTEX)
-	init_MUTEX(&netlink_mutex);
-#endif
+	mutex_init(&netlink_mutex);
 
 	sock = netlink_kernel_create(&init_net, unit, &cfg);