linux-kernel - [PATCH 1/1] Drivers: hid: hid-hyperv: Implement a stub raw

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Message-Id: <1396053687-21421-1-git-send-email-kys@microsoft.com>
Date:	Fri, 28 Mar 2014 17:41:27 -0700
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...e.de, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, ohering@...e.com, jkosina@...e.cz,
	benjamin.tissoires@...hat.com, dh.herrmann@...il.com
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>
Subject: [PATCH 1/1] Drivers: hid: hid-hyperv: Implement a stub  raw_request() entry point

commit 3c86726cfe38952f0366f86acfbbb025813ec1c2
Author: Benjamin Tissoires <benjamin.tissoires@...hat.com>
Date:   Thu Feb 20 15:24:49 2014 -0500

    HID: make .raw_request mandatory

    SET_REPORT and GET_REPORT are mandatory in the HID specification.
    Make the corresponding API in hid-core mandatory too, which removes the
    need to test against it in some various places.

    Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
    Reviewed-by: David Herrmann <dh.herrmann@...il.com>
    Signed-off-by: Jiri Kosina <jkosina@...e.cz>

Made .raw_request mandatory and broke the Hyper-V mouse driver. This patch
fixes the problem.

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
---
 drivers/hid/hid-hyperv.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/drivers/hid/hid-hyperv.c b/drivers/hid/hid-hyperv.c
index c24908f..89a9234 100644
--- a/drivers/hid/hid-hyperv.c
+++ b/drivers/hid/hid-hyperv.c
@@ -460,12 +460,22 @@ static void mousevsc_hid_stop(struct hid_device *hid)
 {
 }
 
+static int mousevsc_hid_raw_request(struct hid_device *hid,
+				    unsigned char report_num,
+				    __u8 buf, size_t len,
+				    unsigned char rtype,
+				    int reqtype)
+{
+	return 0;
+}
+
 static struct hid_ll_driver mousevsc_ll_driver = {
 	.parse = mousevsc_hid_parse,
 	.open = mousevsc_hid_open,
 	.close = mousevsc_hid_close,
 	.start = mousevsc_hid_start,
 	.stop = mousevsc_hid_stop,
+	.raw_request = mousevsc_hid_raw_request,
 };
 
 static struct hid_driver mousevsc_hid_driver;
-- 
1.7.4.1

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