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path: root/drivers/char/mbcs.c
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Diffstat (limited to 'drivers/char/mbcs.c')
-rw-r--r--drivers/char/mbcs.c28
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)