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| author |   Akinobu Mita <akinobu.mita@gmail.com> | 2008-06-09 16:39:57 -0700 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2008-07-21 15:16:31 -0700 |
| commit | 518386c7d4cc3eb8e6b815e0b11ed2cec6245907 (patch) | |
| tree | 68e3a61a64b91e26b71fc82b1c2f8cd37cdf2144 /drivers | |
| parent | USB: uhci: mark root_hub_hub_des[] as const (diff) | |
| download | linux-dev-518386c7d4cc3eb8e6b815e0b11ed2cec6245907.tar.xz linux-dev-518386c7d4cc3eb8e6b815e0b11ed2cec6245907.zip | |
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')
| -rw-r--r-- | drivers/usb/mon/mon_stat.c | 14 |
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) |