stmmac: debugfs entry name is not be changed when udev rename device name. (481a7d15) · Commits · 戴 / test

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

+32 −0

Original line number	Original line	Diff line number	Diff line
	@@ -106,6 +106,7 @@ MODULE_PARM_DESC(chain_mode, "To use chain instead of ring mode");
	static irqreturn_t stmmac_interrupt(int irq, void *dev_id);		static irqreturn_t stmmac_interrupt(int irq, void *dev_id);

	#ifdef CONFIG_DEBUG_FS		#ifdef CONFIG_DEBUG_FS
			static const struct net_device_ops stmmac_netdev_ops;
	static void stmmac_init_fs(struct net_device *dev);		static void stmmac_init_fs(struct net_device *dev);
	static void stmmac_exit_fs(struct net_device *dev);		static void stmmac_exit_fs(struct net_device *dev);
	#endif		#endif
	@@ -4256,6 +4257,34 @@ static int stmmac_dma_cap_show(struct seq_file seq, void v)
	}		}
	DEFINE_SHOW_ATTRIBUTE(stmmac_dma_cap);		DEFINE_SHOW_ATTRIBUTE(stmmac_dma_cap);

			/* Use network device events to rename debugfs file entries.
			*/
			static int stmmac_device_event(struct notifier_block *unused,
			unsigned long event, void *ptr)
			{
			struct net_device *dev = netdev_notifier_info_to_dev(ptr);
			struct stmmac_priv *priv = netdev_priv(dev);

			if (dev->netdev_ops != &stmmac_netdev_ops)
			goto done;

			switch (event) {
			case NETDEV_CHANGENAME:
			if (priv->dbgfs_dir)
			priv->dbgfs_dir = debugfs_rename(stmmac_fs_dir,
			priv->dbgfs_dir,
			stmmac_fs_dir,
			dev->name);
			break;
			}
			done:
			return NOTIFY_DONE;
			}

			static struct notifier_block stmmac_notifier = {
			.notifier_call = stmmac_device_event,
			};

	static void stmmac_init_fs(struct net_device *dev)		static void stmmac_init_fs(struct net_device *dev)
	{		{
	struct stmmac_priv *priv = netdev_priv(dev);		struct stmmac_priv *priv = netdev_priv(dev);
	@@ -4270,12 +4299,15 @@ static void stmmac_init_fs(struct net_device *dev)
	/* Entry to report the DMA HW features */		/* Entry to report the DMA HW features */
	debugfs_create_file("dma_cap", 0444, priv->dbgfs_dir, dev,		debugfs_create_file("dma_cap", 0444, priv->dbgfs_dir, dev,
	&stmmac_dma_cap_fops);		&stmmac_dma_cap_fops);

			register_netdevice_notifier(&stmmac_notifier);
	}		}

	static void stmmac_exit_fs(struct net_device *dev)		static void stmmac_exit_fs(struct net_device *dev)
	{		{
	struct stmmac_priv *priv = netdev_priv(dev);		struct stmmac_priv *priv = netdev_priv(dev);

			unregister_netdevice_notifier(&stmmac_notifier);
	debugfs_remove_recursive(priv->dbgfs_dir);		debugfs_remove_recursive(priv->dbgfs_dir);
	}		}
	#endif /* CONFIG_DEBUG_FS */		#endif /* CONFIG_DEBUG_FS */

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