powerpc: Split __SYSFS_SPRSETUP macro

Split the __SYSFS_SPRSETUP macro into two parts so that registers requiring
custom read and write functions can use common code for their show and store
functions.

Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 13 insertions, 6 deletions

diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index d90d4b7810d6..e2a1d6fb3297 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -404,7 +404,7 @@ void ppc_enable_pmcs(void)
 }
 EXPORT_SYMBOL(ppc_enable_pmcs);
 
-#define __SYSFS_SPRSETUP(NAME, ADDRESS, EXTRA) \
+#define __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, EXTRA) \
 static void read_##NAME(void *val) \
 { \
         *(unsigned long *)val = mfspr(ADDRESS); \
@@ -413,7 +413,9 @@ static void write_##NAME(void *val) \
 { \
         EXTRA; \
         mtspr(ADDRESS, *(unsigned long *)val);  \
-} \
+}
+
+#define __SYSFS_SPRSETUP_SHOW_STORE(NAME) \
 static ssize_t show_##NAME(struct device *dev, \
                         struct device_attribute *attr, \
                         char *buf) \
@@ -436,10 +438,15 @@ static ssize_t __used \
         return count; \
 }
 
-#define SYSFS_PMCSETUP(NAME, ADDRESS)   \
-        __SYSFS_SPRSETUP(NAME, ADDRESS, ppc_enable_pmcs())
-#define SYSFS_SPRSETUP(NAME, ADDRESS)   \
-        __SYSFS_SPRSETUP(NAME, ADDRESS, )
+#define SYSFS_PMCSETUP(NAME, ADDRESS) \
+        __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, ppc_enable_pmcs()) \
+        __SYSFS_SPRSETUP_SHOW_STORE(NAME)
+#define SYSFS_SPRSETUP(NAME, ADDRESS) \
+        __SYSFS_SPRSETUP_READ_WRITE(NAME, ADDRESS, ) \
+        __SYSFS_SPRSETUP_SHOW_STORE(NAME)
+
+#define SYSFS_SPRSETUP_SHOW_STORE(NAME) \
+        __SYSFS_SPRSETUP_SHOW_STORE(NAME)
 
 /* Let's define all possible registers, we'll only hook up the ones
  * that are implemented on the current processor