sh: provide generic arch_debugfs_dir.

While sh previously had its own debugfs root, there now exists a
common arch_debugfs_dir prototype, so we switch everything over to
that.  Presumably once more architectures start making use of this
we'll be able to just kill off the stub kdebugfs wrapper.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

8 files changed, 24 insertions, 40 deletions

diff --git a/arch/sh/include/asm/system.h b/arch/sh/include/asm/system.h
index 0bd7a17d5e1a..1f1af5afff03 100644
--- a/arch/sh/include/asm/system.h
+++ b/arch/sh/include/asm/system.h
@@ -140,8 +140,6 @@ extern unsigned int instruction_size(unsigned int insn);
 extern unsigned long cached_to_uncached;
 extern unsigned long uncached_size;
 
-extern struct dentry *sh_debugfs_root;
-
 void per_cpu_trap_init(void);
 void default_idle(void);
 void cpu_idle_wait(void);
diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
index a1effb673722..8eed6a485446 100644
--- a/arch/sh/kernel/Makefile
+++ b/arch/sh/kernel/Makefile
@@ -12,8 +12,8 @@ endif
 CFLAGS_REMOVE_return_address.o = -pg
 
 obj-y   := clkdev.o debugtraps.o dma-nommu.o dumpstack.o                \
-           idle.o io.o irq.o                                            \
-           irq_$(BITS).o machvec.o nmi_debug.o process.o                \
+           idle.o io.o irq.o irq_$(BITS).o kdebugfs.o                   \
+           machvec.o nmi_debug.o process.o                              \
            process_$(BITS).o ptrace.o ptrace_$(BITS).o                  \
            reboot.o return_address.o                                    \
            setup.o signal_$(BITS).o sys_sh.o sys_sh$(BITS).o            \
diff --git a/arch/sh/kernel/kdebugfs.c b/arch/sh/kernel/kdebugfs.c
new file mode 100644
index 000000000000..e11c30bb100c
--- /dev/null
+++ b/arch/sh/kernel/kdebugfs.c
@@ -0,0 +1,16 @@
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/debugfs.h>
+
+struct dentry *arch_debugfs_dir;
+EXPORT_SYMBOL(arch_debugfs_dir);
+
+static int __init arch_kdebugfs_init(void)
+{
+        arch_debugfs_dir = debugfs_create_dir("sh", NULL);
+        if (!arch_debugfs_dir)
+                return -ENOMEM;
+
+        return 0;
+}
+arch_initcall(arch_kdebugfs_init);
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index e769401a78ba..f24d0ea8be2d 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -24,7 +24,6 @@
 #include <linux/module.h>
 #include <linux/smp.h>
 #include <linux/err.h>
-#include <linux/debugfs.h>
 #include <linux/crash_dump.h>
 #include <linux/mmzone.h>
 #include <linux/clk.h>
@@ -458,17 +457,3 @@ const struct seq_operations cpuinfo_op = {
         .show   = show_cpuinfo,
 };
 #endif /* CONFIG_PROC_FS */
-
-struct dentry *sh_debugfs_root;
-
-static int __init sh_debugfs_init(void)
-{
-        sh_debugfs_root = debugfs_create_dir("sh", NULL);
-        if (!sh_debugfs_root)
-                return -ENOMEM;
-        if (IS_ERR(sh_debugfs_root))
-                return PTR_ERR(sh_debugfs_root);
-
-        return 0;
-}
-arch_initcall(sh_debugfs_init);
diff --git a/arch/sh/mm/asids-debugfs.c b/arch/sh/mm/asids-debugfs.c
index cd8c3bf39b5a..74c03ecc4871 100644
--- a/arch/sh/mm/asids-debugfs.c
+++ b/arch/sh/mm/asids-debugfs.c
@@ -63,7 +63,7 @@ static int __init asids_debugfs_init(void)
 {
         struct dentry *asids_dentry;
 
-        asids_dentry = debugfs_create_file("asids", S_IRUSR, sh_debugfs_root,
+        asids_dentry = debugfs_create_file("asids", S_IRUSR, arch_debugfs_dir,
                                            NULL, &asids_debugfs_fops);
         if (!asids_dentry)
                 return -ENOMEM;
diff --git a/arch/sh/mm/cache-debugfs.c b/arch/sh/mm/cache-debugfs.c
index 690ed010d002..52411462c409 100644
--- a/arch/sh/mm/cache-debugfs.c
+++ b/arch/sh/mm/cache-debugfs.c
@@ -126,25 +126,19 @@ static int __init cache_debugfs_init(void)
 {
         struct dentry *dcache_dentry, *icache_dentry;
 
-        dcache_dentry = debugfs_create_file("dcache", S_IRUSR, sh_debugfs_root,
+        dcache_dentry = debugfs_create_file("dcache", S_IRUSR, arch_debugfs_dir,
                                             (unsigned int *)CACHE_TYPE_DCACHE,
                                             &cache_debugfs_fops);
         if (!dcache_dentry)
                 return -ENOMEM;
-        if (IS_ERR(dcache_dentry))
-                return PTR_ERR(dcache_dentry);
 
-        icache_dentry = debugfs_create_file("icache", S_IRUSR, sh_debugfs_root,
+        icache_dentry = debugfs_create_file("icache", S_IRUSR, arch_debugfs_dir,
                                             (unsigned int *)CACHE_TYPE_ICACHE,
                                             &cache_debugfs_fops);
         if (!icache_dentry) {
                 debugfs_remove(dcache_dentry);
                 return -ENOMEM;
         }
-        if (IS_ERR(icache_dentry)) {
-                debugfs_remove(dcache_dentry);
-                return PTR_ERR(icache_dentry);
-        }
 
         return 0;
 }
diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c
index 6379091a1647..233c011c4d22 100644
--- a/arch/sh/mm/pmb.c
+++ b/arch/sh/mm/pmb.c
@@ -866,11 +866,9 @@ static int __init pmb_debugfs_init(void)
         struct dentry *dentry;
 
         dentry = debugfs_create_file("pmb", S_IFREG | S_IRUGO,
-                                     sh_debugfs_root, NULL, &pmb_debugfs_fops);
+                                     arch_debugfs_dir, NULL, &pmb_debugfs_fops);
         if (!dentry)
                 return -ENOMEM;
-        if (IS_ERR(dentry))
-                return PTR_ERR(dentry);
 
         return 0;
 }
diff --git a/arch/sh/mm/tlb-debugfs.c b/arch/sh/mm/tlb-debugfs.c
index 229bf75f28df..dea637a09246 100644
--- a/arch/sh/mm/tlb-debugfs.c
+++ b/arch/sh/mm/tlb-debugfs.c
@@ -151,15 +151,13 @@ static int __init tlb_debugfs_init(void)
 {
         struct dentry *itlb, *utlb;
 
-        itlb = debugfs_create_file("itlb", S_IRUSR, sh_debugfs_root,
+        itlb = debugfs_create_file("itlb", S_IRUSR, arch_debugfs_dir,
                                    (unsigned int *)TLB_TYPE_ITLB,
                                    &tlb_debugfs_fops);
         if (unlikely(!itlb))
                 return -ENOMEM;
-        if (IS_ERR(itlb))
-                return PTR_ERR(itlb);
 
-        utlb = debugfs_create_file("utlb", S_IRUSR, sh_debugfs_root,
+        utlb = debugfs_create_file("utlb", S_IRUSR, arch_debugfs_dir,
                                    (unsigned int *)TLB_TYPE_UTLB,
                                    &tlb_debugfs_fops);
         if (unlikely(!utlb)) {
@@ -167,11 +165,6 @@ static int __init tlb_debugfs_init(void)
                 return -ENOMEM;
         }
 
-        if (IS_ERR(utlb)) {
-                debugfs_remove(itlb);
-                return PTR_ERR(utlb);
-        }
-
         return 0;
 }
 module_init(tlb_debugfs_init);