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[media] drivers/staging/media/easycap/easycap_main.c: add missing usb_free_urb

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Add missing usb_free_urb on failure path after usb_alloc_urb.

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

// <smpl>
@km exists@
local idexpression e;
expression e1,e2,e3;
type T,T1;
identifier f;
@@

* e = usb_alloc_urb(...)
... when any
    when != e = e1
    when != e1 = (T)e
    when != e1(...,(T)e,...)
    when != &e->f
if(...) { ... when != e2(...,(T1)e,...)
                 when != e3 = e
                 when forall
(
             return <+...e...+>;
|
*             return ...;
) }
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Julia Lawall 2012-07-24 11:06:09 -03:00 committed by Mauro Carvalho Chehab
parent 5a7a570bf4
commit e53a99eb15
1 changed files with 1 additions and 0 deletions
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1
drivers/staging/media/easycap/easycap_main.c
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@ -3083,6 +3083,7 @@ static int create_video_urbs(struct easycap *peasycap)
peasycap->allocation_video_urb += 1;
pdata_urb = kzalloc(sizeof(struct data_urb), GFP_KERNEL);
if (!pdata_urb) {
usb_free_urb(purb);
SAM("ERROR: Could not allocate struct data_urb.\n");
return -ENOMEM;
}