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Subject[PATCH 9/16] HID: logitech-hidpp: fix error return code
Date
Return a negative error code on failure.

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

// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
drivers/hid/hid-logitech-hidpp.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index e77658c..ce9819f 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -1210,6 +1210,7 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
connected = hidpp_is_connected(hidpp);
if (id->group != HID_GROUP_LOGITECH_DJ_DEVICE) {
if (!connected) {
+ ret = -ENODEV;
hid_err(hdev, "Device not connected");
hid_device_io_stop(hdev);
goto hid_parse_fail;


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