From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>,
Jiri Kosina <jkosina@suse.cz>,
Ben Hutchings <ben@decadent.org.uk>,
Yijing Wang <wangyijing@huawei.com>,
linux-input@vger.kernel.org, linux-usb@vger.kernel.org
Subject: [PATCH 3.4 025/134] HID: clean up quirk for Sony RF receivers
Date: Wed, 9 Apr 2014 20:22:21 -0700 [thread overview]
Message-ID: <20140410032303.148203539@linuxfoundation.org> (raw)
In-Reply-To: <20140410032259.587501440@linuxfoundation.org>
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
commit 99d249021abd4341771523ed8dd7946276103432 upstream.
Document what the fix-up is does and make it more robust by ensuring
that it is only applied to the USB interface that corresponds to the
mouse (sony_report_fixup() is called once per interface during probing).
Cc: linux-input@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/hid/hid-sony.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -44,9 +44,19 @@ static __u8 *sony_report_fixup(struct hi
{
struct sony_sc *sc = hid_get_drvdata(hdev);
- if ((sc->quirks & VAIO_RDESC_CONSTANT) &&
- *rsize >= 56 && rdesc[54] == 0x81 && rdesc[55] == 0x07) {
+ /*
+ * Some Sony RF receivers wrongly declare the mouse pointer as a
+ * a constant non-data variable.
+ */
+ if ((sc->quirks & VAIO_RDESC_CONSTANT) && *rsize >= 56 &&
+ /* usage page: generic desktop controls */
+ /* rdesc[0] == 0x05 && rdesc[1] == 0x01 && */
+ /* usage: mouse */
+ rdesc[2] == 0x09 && rdesc[3] == 0x02 &&
+ /* input (usage page for x,y axes): constant, variable, relative */
+ rdesc[54] == 0x81 && rdesc[55] == 0x07) {
hid_info(hdev, "Fixing up Sony RF Receiver report descriptor\n");
+ /* input: data, variable, relative */
rdesc[55] = 0x06;
}
prev parent reply other threads:[~2014-04-10 3:22 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20140410032259.587501440@linuxfoundation.org>
2014-04-10 3:22 ` [PATCH 3.4 024/134] HID: add support for Sony RF receiver with USB product id 0x0374 Greg Kroah-Hartman
2014-04-10 3:22 ` Greg Kroah-Hartman [this message]
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