zorro: use memory_read_from_buffer

zorro: use memory_read_from_buffer

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 8 deletions

diff --git a/drivers/zorro/zorro-sysfs.c b/drivers/zorro/zorro-sysfs.c
index 808b4f8675c5..3da712cc7708 100644
--- a/drivers/zorro/zorro-sysfs.c
+++ b/drivers/zorro/zorro-sysfs.c
@@ -15,6 +15,7 @@
 #include <linux/zorro.h>
 #include <linux/stat.h>
 #include <linux/string.h>
+#include <linux/fs.h>
 
 #include "zorro.h"
 
@@ -56,12 +57,6 @@ static ssize_t zorro_read_config(struct kobject *kobj,
         struct zorro_dev *z = to_zorro_dev(container_of(kobj, struct device,
                                            kobj));
         struct ConfigDev cd;
-        unsigned int size = sizeof(cd);
-
-        if (off > size)
-                return 0;
-        if (off+count > size)
-                count = size-off;
 
         /* Construct a ConfigDev */
         memset(&cd, 0, sizeof(cd));
@@ -71,8 +66,7 @@ static ssize_t zorro_read_config(struct kobject *kobj,
         cd.cd_BoardAddr = (void *)zorro_resource_start(z);
         cd.cd_BoardSize = zorro_resource_len(z);
 
-        memcpy(buf, (void *)&cd+off, count);
-        return count;
+        return memory_read_from_buffer(buf, count, &off, &cd, sizeof(cd));
 }
 
 static struct bin_attribute zorro_config_attr = {