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Subject[patch -v3 04/22] isdn: use simple_read_from_buffer
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Karsten Keil <kkeil@suse.de>
---
drivers/isdn/hysdn/hysdn_procconf.c | 27 +++++++--------------------
1 file changed, 7 insertions(+), 20 deletions(-)
Index: 2.6-git/drivers/isdn/hysdn/hysdn_procconf.c
===================================================================
--- 2.6-git.orig/drivers/isdn/hysdn/hysdn_procconf.c
+++ 2.6-git/drivers/isdn/hysdn/hysdn_procconf.c
@@ -207,30 +207,17 @@ hysdn_conf_write(struct file *file, cons
/* read conf file -> output card info data */
/*******************************************/
static ssize_t
-hysdn_conf_read(struct file *file, char __user *buf, size_t count, loff_t * off)
+hysdn_conf_read(struct file *file, char __user *buf, size_t count, loff_t *off)
{
char *cp;
- int i;

- if (file->f_mode & FMODE_READ) {
- if (!(cp = file->private_data))
- return (-EFAULT); /* should never happen */
- i = strlen(cp); /* get total string length */
- if (*off < i) {
- /* still bytes to transfer */
- cp += *off; /* point to desired data offset */
- i -= *off; /* remaining length */
- if (i > count)
- i = count; /* limit length to transfer */
- if (copy_to_user(buf, cp, i))
- return (-EFAULT); /* copy error */
- *off += i; /* adjust offset */
- } else
- return (0);
- } else
- return (-EPERM); /* no permission to read */
+ if (!(file->f_mode & FMODE_READ))
+ return -EPERM; /* no permission to read */

- return (i);
+ if (!(cp = file->private_data))
+ return -EFAULT; /* should never happen */
+
+ return simple_read_from_buffer(buf, count, off, cp, strlen(cp));
} /* hysdn_conf_read */

/******************/
--


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