1 files changed, 3 insertions, 25 deletions

diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
index e5d3e3f7a49b..67d426470e53 100644
--- a/drivers/char/mbcs.c
+++ b/drivers/char/mbcs.c
@@ -26,6 +26,7 @@
 #include <linux/uio.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
+#include <linux/pagemap.h>
 #include <asm/io.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
@@ -451,31 +452,8 @@ mbcs_sram_write(struct file * fp, const char __user *buf, size_t len, loff_t * o
 
 static loff_t mbcs_sram_llseek(struct file * filp, loff_t off, int whence)
 {
-        loff_t newpos;
-
-        switch (whence) {
-        case SEEK_SET:
-                newpos = off;
-                break;
-
-        case SEEK_CUR:
-                newpos = filp->f_pos + off;
-                break;
-
-        case SEEK_END:
-                newpos = MBCS_SRAM_SIZE + off;
-                break;
-
-        default:                /* can't happen */
-                return -EINVAL;
-        }
-
-        if (newpos < 0)
-                return -EINVAL;
-
-        filp->f_pos = newpos;
-
-        return newpos;
+        return generic_file_llseek_size(filp, off, whence, MAX_LFS_FILESIZE,
+                                        MBCS_SRAM_SIZE);
 }
 
 static uint64_t mbcs_pioaddr(struct mbcs_soft *soft, uint64_t offset)