[PATCH net-next] netdevice: add the case if dev is NULL

[PATCH net-next] netdevice: add the case if dev is NULL

[Yajun Deng]

Add the case if dev is NULL in dev_{put, hold}, so the caller doesn't
need to care whether dev is NULL or not.

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
---
 include/linux/netdevice.h | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 1b4d4509d04b..135c943699d0 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4143,11 +4143,13 @@ void netdev_run_todo(void);
  */
 static inline void dev_put(struct net_device *dev)
 {
+	if (dev) {
 #ifdef CONFIG_PCPU_DEV_REFCNT
-	this_cpu_dec(*dev->pcpu_refcnt);
+		this_cpu_dec(*dev->pcpu_refcnt);
 #else
-	refcount_dec(&dev->dev_refcnt);
+		refcount_dec(&dev->dev_refcnt);
 #endif
+	}
 }
 
 /**
@@ -4158,11 +4160,13 @@ static inline void dev_put(struct net_device *dev)
  */
 static inline void dev_hold(struct net_device *dev)
 {
+	if (dev) {
 #ifdef CONFIG_PCPU_DEV_REFCNT
-	this_cpu_inc(*dev->pcpu_refcnt);
+		this_cpu_inc(*dev->pcpu_refcnt);
 #else
-	refcount_inc(&dev->dev_refcnt);
+		refcount_inc(&dev->dev_refcnt);
 #endif
+	}
 }
 
 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
-- 
2.32.0

Re: [PATCH net-next] netdevice: add the case if dev is NULL

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (refs/heads/master):

On Thu,  5 Aug 2021 19:54:34 +0800 you wrote:
> Add the case if dev is NULL in dev_{put, hold}, so the caller doesn't
> need to care whether dev is NULL or not.
> 
> Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
> ---
>  include/linux/netdevice.h | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)

Here is the summary with links:
  - [net-next] netdevice: add the case if dev is NULL
    https://git.kernel.org/netdev/net-next/c/b37a46683739

You are awesome, thank you!
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