From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Sun, 5 Apr 2015 12:06:29 +0000 (+0200)
Subject: HID: logitech-hidpp: fix error return code
X-Git-Tag: Ubuntu-snapdragon-4.4.0-1050.54~8401^2~1^6
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=b832da56024b33e6c7f06f766c59d90e4f377a9b;p=mirror_ubuntu-artful-kernel.git

HID: logitech-hidpp: fix error return code

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>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---

diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index 8e9cb25f45cb..b3cf6fd4be96 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -1220,6 +1220,7 @@ 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;