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authorAkinobu Mita <akinobu.mita@gmail.com>2010-12-25 15:03:58 +0900
committerJohn W. Linville <linville@tuxdriver.com>2011-01-04 14:35:12 -0500
commitad9082adfc0a6bdcef1bad2f22485575479d7a9d (patch)
treed990dec471dce26a84f922c90c6b5cccbbe02536 /drivers/net/wireless/airo.c
parent52671e43dbfb0e0dfa5fab604cb3984bd1d777a6 (diff)
downloadlinux-stericsson-ad9082adfc0a6bdcef1bad2f22485575479d7a9d.tar.gz
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.c20
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)