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staging: line6: do not return 0 from probe if no initialization done

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There is a strange "return 0" in line6_probe() before any initialization of
the module is done. It can lead to NULL pointer dereference in other functions.
The patch proposes to return -ENODEV in this case.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexey Khoroshilov 2014-06-11 00:22:50 +04:00 committed by Greg Kroah-Hartman
parent 07467e509b
commit c7f268df3f
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/line6/driver.c
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@ -663,7 +663,7 @@ static int line6_probe(struct usb_interface *interface,
case LINE6_DEVID_POCKETPOD:
switch (interface_number) {
case 0:
return 0; /* this interface has no endpoints */
return -ENODEV; /* this interface has no endpoints */
case 1:
alternate = 0;
break;