diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2010-12-25 15:03:58 +0900 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-01-04 14:35:12 -0500 |
| commit | ad9082adfc0a6bdcef1bad2f22485575479d7a9d (patch) | |
| tree | d990dec471dce26a84f922c90c6b5cccbbe02536 /drivers/net/wireless/airo.c | |
| parent | 52671e43dbfb0e0dfa5fab604cb3984bd1d777a6 (diff) | |
airo: use simple_write_to_buffer
Simplify write file operation for /proc files by using
simple_write_to_buffer().
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/airo.c')
| -rw-r--r-- | drivers/net/wireless/airo.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c index a36e7870b03e..57a79b0475f6 100644 --- a/drivers/net/wireless/airo.c +++ b/drivers/net/wireless/airo.c @@ -4652,24 +4652,18 @@ static ssize_t proc_write( struct file *file, size_t len, loff_t *offset ) { - loff_t pos = *offset; + ssize_t ret; struct proc_data *priv = file->private_data; if (!priv->wbuffer) return -EINVAL; - if (pos < 0) - return -EINVAL; - if (pos >= priv->maxwritelen) - return 0; - if (len > priv->maxwritelen - pos) - len = priv->maxwritelen - pos; - if (copy_from_user(priv->wbuffer + pos, buffer, len)) - return -EFAULT; - if ( pos + len > priv->writelen ) - priv->writelen = len + file->f_pos; - *offset = pos + len; - return len; + ret = simple_write_to_buffer(priv->wbuffer, priv->maxwritelen, offset, + buffer, len); + if (ret > 0) + priv->writelen = max_t(int, priv->writelen, *offset); + + return ret; } static int proc_status_open(struct inode *inode, struct file *file) |