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V4L/DVB (7108): radio-si470x.c: check-after-use

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Adrian used the coverity checker against radio-si470x and found this:

> The Coverity checker spotted the following check-after-use in
> drivers/media/radio/radio-si470x.c:
>
> <--  snip  -->
> static void si470x_usb_driver_disconnect(struct usb_interface *intf)
> {
>         struct si470x_device *radio = usb_get_intfdata(intf);
>
>         del_timer_sync(&radio->timer);    <------------------
>         flush_scheduled_work();
>
>         usb_set_intfdata(intf, NULL);
>         if (radio) {                      <------------------
>                 video_unregister_device(radio->videodev);
>                 kfree(radio->buffer);
>                 kfree(radio);
>         }
> }
> <--  snip  -->
>
> Either "radio" can be NULL and this case has to be properly handled or
> the NULL check is not required.

These two lines should indeed better be inside the if statement.

Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Tobias Lorenz 2008-01-28 22:43:13 -03:00 committed by Mauro Carvalho Chehab
parent 532fe65205
commit c3f686f152
1 changed files with 2 additions and 3 deletions
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5
drivers/media/radio/radio-si470x.c
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@ -1439,11 +1439,10 @@ static void si470x_usb_driver_disconnect(struct usb_interface *intf)
{
struct si470x_device *radio = usb_get_intfdata(intf);
del_timer_sync(&radio->timer);
flush_scheduled_work();
usb_set_intfdata(intf, NULL);
if (radio) {
del_timer_sync(&radio->timer);
flush_scheduled_work();
video_unregister_device(radio->videodev);
kfree(radio->buffer);
kfree(radio);