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-rw-r--r--drivers/usb/mon/mon_stat.c14
1 files changed, 2 insertions, 12 deletions
diff --git a/drivers/usb/mon/mon_stat.c b/drivers/usb/mon/mon_stat.c
index c7a595cd648..ac8b0d5ce7f 100644
--- a/drivers/usb/mon/mon_stat.c
+++ b/drivers/usb/mon/mon_stat.c
@@ -9,6 +9,7 @@
#include <linux/kernel.h>
#include <linux/usb.h>
+#include <linux/fs.h>
#include <asm/uaccess.h>
#include "usb_mon.h"
@@ -42,19 +43,8 @@ static ssize_t mon_stat_read(struct file *file, char __user *buf,
size_t nbytes, loff_t *ppos)
{
struct snap *sp = file->private_data;
- loff_t pos = *ppos;
- int cnt;
- if (pos < 0 || pos >= sp->slen)
- return 0;
- if (nbytes == 0)
- return 0;
- if ((cnt = sp->slen - pos) > nbytes)
- cnt = nbytes;
- if (copy_to_user(buf, sp->str + pos, cnt))
- return -EFAULT;
- *ppos = pos + cnt;
- return cnt;
+ return simple_read_from_buffer(buf, nbytes, ppos, sp->str, sp->slen);
}
static int mon_stat_release(struct inode *inode, struct file *file)