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authorAkinobu Mita <akinobu.mita@gmail.com>2008-06-10 03:39:57 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2008-07-22 02:16:31 +0400
commit518386c7d4cc3eb8e6b815e0b11ed2cec6245907 (patch)
tree68e3a61a64b91e26b71fc82b1c2f8cd37cdf2144 /drivers/usb/mon
parentbef4665a2e5145737fa925a5a1a7a8afd1b91acc (diff)
downloadlinux-518386c7d4cc3eb8e6b815e0b11ed2cec6245907.tar.xz
USB: usbmon: use simple_read_from_buffer()
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/mon')
-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 c7a595cd648a..ac8b0d5ce7f8 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)