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libertas: Fix up error handling in lbs_setuserscan() 

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
David Woodhouse 2007-12-08 00:23:55 +00:00 committed by David S. Miller
parent c12bdc45d9
commit 99c893f34a
1 changed files with 19 additions and 10 deletions
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29
drivers/net/wireless/libertas/debugfs.c
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@ -293,19 +293,24 @@ static ssize_t lbs_setuserscan(struct file *file,
struct lbs_ioctl_user_scan_cfg *scan_cfg;
union iwreq_data wrqu;
int dur;
unsigned long addr = get_zeroed_page(GFP_KERNEL);
char *buf = (char *)addr;
char *buf = (char *)get_zeroed_page(GFP_KERNEL);
scan_cfg = kzalloc(sizeof(struct lbs_ioctl_user_scan_cfg), GFP_KERNEL);
if (!scan_cfg)
if (!buf)
return -ENOMEM;
buf_size = min(count, len - 1);
if (copy_from_user(buf, userbuf, buf_size)) {
res = -EFAULT;
goto out_unlock;
goto out_buf;
}
scan_cfg = kzalloc(sizeof(struct lbs_ioctl_user_scan_cfg), GFP_KERNEL);
if (!scan_cfg) {
res = -ENOMEM;
goto out_buf;
}
res = count;
scan_cfg->bsstype = LBS_SCAN_BSS_TYPE_ANY;
dur = lbs_parse_dur(buf, count, scan_cfg);
@ -317,15 +322,19 @@ static ssize_t lbs_setuserscan(struct file *file,
lbs_scan_networks(priv, scan_cfg, 1);
wait_event_interruptible(priv->adapter->cmd_pending,
!priv->adapter->nr_cmd_pending);
priv->adapter->surpriseremoved || !priv->adapter->nr_cmd_pending);
if (priv->adapter->surpriseremoved)
goto out_scan_cfg;
memset(&wrqu, 0x00, sizeof(union iwreq_data));
wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL);
out_unlock:
free_page(addr);
out_scan_cfg:
kfree(scan_cfg);
return count;
out_buf:
free_page((unsigned long)buf);
return res;
}