Commit 6734011f authored by Peter Senna Tschudin's avatar Peter Senna Tschudin Committed by David S. Miller

drivers/net/irda/mcs7780.c: fix error return code

The function mcs_probe() return 0 for success and negative value
for most of its internal tests failures. There is one exception
that is error case going to error2:. For this error case, the
function abort its success execution path, but returns non negative
value, making it difficult for a caller function to notice the error.

This patch fixes the error case that do not return negative value.

A simplified version of the semantic match that finds this problem is
as follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>
Signed-off-by: default avatarPeter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 87286477
...@@ -920,8 +920,10 @@ static int mcs_probe(struct usb_interface *intf, ...@@ -920,8 +920,10 @@ static int mcs_probe(struct usb_interface *intf,
ndev->netdev_ops = &mcs_netdev_ops; ndev->netdev_ops = &mcs_netdev_ops;
if (!intf->cur_altsetting) if (!intf->cur_altsetting) {
ret = -ENOMEM;
goto error2; goto error2;
}
ret = mcs_find_endpoints(mcs, intf->cur_altsetting->endpoint, ret = mcs_find_endpoints(mcs, intf->cur_altsetting->endpoint,
intf->cur_altsetting->desc.bNumEndpoints); intf->cur_altsetting->desc.bNumEndpoints);
......
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