diff options
| author | Markus Pargmann <mpa@pengutronix.de> | 2014-12-26 12:41:18 +0100 |
|---|---|---|
| committer | Antonio Quartulli <antonio@meshcoding.com> | 2015-05-29 10:13:35 +0200 |
| commit | 9bb218828c8f4fa6587af93e248903c96ce469d0 (patch) | |
| tree | f7032b450be40f839eea8fe160290e5c5ab6d21e /net/batman-adv | |
| parent | 83e8b87721f21b26b843633caca8ef453e943623 (diff) | |
| download | lwn-9bb218828c8f4fa6587af93e248903c96ce469d0.tar.gz lwn-9bb218828c8f4fa6587af93e248903c96ce469d0.zip | |
batman-adv: debugfs, avoid compiling for !DEBUG_FS
Normally the debugfs framework will return error pointer with -ENODEV
for function calls when DEBUG_FS is not set.
batman does not notice this error code and continues trying to create
debugfs files and executes more code. We can avoid this code execution
by disabling compiling debugfs.c when DEBUG_FS is not set.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Diffstat (limited to 'net/batman-adv')
| -rw-r--r-- | net/batman-adv/Makefile | 2 | ||||
| -rw-r--r-- | net/batman-adv/debugfs.c | 8 | ||||
| -rw-r--r-- | net/batman-adv/debugfs.h | 34 |
3 files changed, 35 insertions, 9 deletions
diff --git a/net/batman-adv/Makefile b/net/batman-adv/Makefile index 79833ebcc2dd..bd7e343c98d1 100644 --- a/net/batman-adv/Makefile +++ b/net/batman-adv/Makefile @@ -20,7 +20,7 @@ obj-$(CONFIG_BATMAN_ADV) += batman-adv.o batman-adv-y += bat_iv_ogm.o batman-adv-y += bitarray.o batman-adv-$(CONFIG_BATMAN_ADV_BLA) += bridge_loop_avoidance.o -batman-adv-y += debugfs.o +batman-adv-$(CONFIG_DEBUG_FS) += debugfs.o batman-adv-$(CONFIG_BATMAN_ADV_DAT) += distributed-arp-table.o batman-adv-y += fragmentation.o batman-adv-y += gateway_client.o diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c index 0c213a892296..46118084221a 100644 --- a/net/batman-adv/debugfs.c +++ b/net/batman-adv/debugfs.c @@ -482,11 +482,7 @@ rem_attr: debugfs_remove_recursive(hard_iface->debug_dir); hard_iface->debug_dir = NULL; out: -#ifdef CONFIG_DEBUG_FS return -ENOMEM; -#else - return 0; -#endif /* CONFIG_DEBUG_FS */ } /** @@ -541,11 +537,7 @@ rem_attr: debugfs_remove_recursive(bat_priv->debug_dir); bat_priv->debug_dir = NULL; out: -#ifdef CONFIG_DEBUG_FS return -ENOMEM; -#else - return 0; -#endif /* CONFIG_DEBUG_FS */ } void batadv_debugfs_del_meshif(struct net_device *dev) diff --git a/net/batman-adv/debugfs.h b/net/batman-adv/debugfs.h index f3b49c394446..ed25605ca732 100644 --- a/net/batman-adv/debugfs.h +++ b/net/batman-adv/debugfs.h @@ -20,6 +20,8 @@ #define BATADV_DEBUGFS_SUBDIR "batman_adv" +#if IS_ENABLED(CONFIG_DEBUG_FS) + void batadv_debugfs_init(void); void batadv_debugfs_destroy(void); int batadv_debugfs_add_meshif(struct net_device *dev); @@ -27,4 +29,36 @@ void batadv_debugfs_del_meshif(struct net_device *dev); int batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface); void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface); +#else + +static inline void batadv_debugfs_init(void) +{ +} + +static inline void batadv_debugfs_destroy(void) +{ +} + +static inline int batadv_debugfs_add_meshif(struct net_device *dev) +{ + return 0; +} + +static inline void batadv_debugfs_del_meshif(struct net_device *dev) +{ +} + +static inline +int batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface) +{ + return 0; +} + +static inline +void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface) +{ +} + +#endif + #endif /* _NET_BATMAN_ADV_DEBUGFS_H_ */ |