drivers: staging: zcache: fix compile error

Because 'ramster_debugfs_init' is not defined if !CONFIG_DEBUG_FS, there is
compile error:

$ make drivers/staging/zcache/
staging/zcache/ramster/ramster.c: In function ‘ramster_init’:
staging/zcache/ramster/ramster.c:981:2: error: implicit declaration of
function ‘ramster_debugfs_init’ [-Werror=implicit-function-declaration]

This patch fix it and reduce some #ifdef CONFIG_DEBUG_FS in .c files the same
way.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/zcache/ramster/ramster.c b/drivers/staging/zcache/ramster/ramster.c
index bf96a1c..01fc672 100644 (file)
--- a/drivers/staging/zcache/ramster/ramster.c
+++ b/drivers/staging/zcache/ramster/ramster.c
@@ -134,6 +134,11 @@ static int __init ramster_debugfs_init(void)
 }
 #undef zdebugfs
 #undef zdfs64
+#else
+static inline int ramster_debugfs_init(void)
+{
+       return 0;
+}
 #endif
 
 static LIST_HEAD(ramster_rem_op_list);

diff --git a/drivers/staging/zcache/zbud.c b/drivers/staging/zcache/zbud.c
index fdff5c6..6cda4ed 100644 (file)
--- a/drivers/staging/zcache/zbud.c
+++ b/drivers/staging/zcache/zbud.c
@@ -342,6 +342,11 @@ static int zbud_debugfs_init(void)
 }
 #undef zdfs
 #undef zdfs64
+#else
+static inline int zbud_debugfs_init(void)
+{
+       return 0;
+}
 #endif
 
 /* protects the buddied list and all unbuddied lists */
@@ -1051,9 +1056,7 @@ void zbud_init(void)
 {
        int i;
 
-#ifdef CONFIG_DEBUG_FS
        zbud_debugfs_init();
-#endif
        BUG_ON((sizeof(struct tmem_handle) * 2 > CHUNK_SIZE));
        BUG_ON(sizeof(struct zbudpage) > sizeof(struct page));
        for (i = 0; i < NCHUNKS; i++) {

diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache/zcache-main.c
index 7a6dd96..cf3001c 100644 (file)
--- a/drivers/staging/zcache/zcache-main.c
+++ b/drivers/staging/zcache/zcache-main.c
@@ -1733,9 +1733,7 @@ static int __init zcache_init(void)
                namestr = "ramster";
                ramster_register_pamops(&zcache_pamops);
        }
-#ifdef CONFIG_DEBUG_FS
        zcache_debugfs_init();
-#endif
        if (zcache_enabled) {
                unsigned int cpu;