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@xxxxxxxxx>
---
drivers/staging/line6/driver.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/line6/driver.c b/drivers/staging/line6/driver.c
index ef511c76a6e3..503b2d763595 100644
--- a/drivers/staging/line6/driver.c
+++ b/drivers/staging/line6/driver.c
@@ -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;
--
1.9.1
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