linux-kernel - [PATCH] HID: uhid: actually use the err number from userspace

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Date:   Mon, 12 Aug 2019 18:21:05 +0200
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     David Rheinsberg <david.rheinsberg@...il.com>,
        Jiri Kosina <jikos@...nel.org>
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Subject: [PATCH] HID: uhid: actually use the err number from userspace

This can help debugging the situation

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
---

Hi,

not entirely sure if we can use this in a such simple way.

However, this is useful to mimic device behaviour from userspace.

Cheers,
Benjamin

 drivers/hid/uhid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
index fa0cc0899827..2fa32e7fc733 100644
--- a/drivers/hid/uhid.c
+++ b/drivers/hid/uhid.c
@@ -284,7 +284,7 @@ static int uhid_hid_set_report(struct hid_device *hid, unsigned char rnum,
 		goto unlock;
 
 	if (uhid->report_buf.u.set_report_reply.err)
-		ret = -EIO;
+		ret = -uhid->report_buf.u.set_report_reply.err;
 	else
 		ret = count;
 
-- 
2.19.2