From: Andrew Duggan <aduggan@synaptics.com>
To: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Andrew Duggan <aduggan@synaptics.com>,
Jiri Kosina <jkosina@suse.cz>,
Benjamin Tissoires <benjamin.tissoires@redhat.com>
Subject: [PATCH] HID: rmi: only bind the hid-rmi driver to the mouse interface of composite USB devices
Date: Thu, 17 Jul 2014 16:14:45 -0700 [thread overview]
Message-ID: <1405638885-8014-2-git-send-email-aduggan@synaptics.com> (raw)
In-Reply-To: <1405638885-8014-1-git-send-email-aduggan@synaptics.com>
On composite HID devices there may be multiple HID devices on separate interfaces, but hid-rmi
should only bind to the mouse interface. One example is the Dell Venue 11 Pro's keyboard dock
which contains a composite USB device with a HID touchpad and HID keyboard on separate intefaces.
Since the USB Vendor ID is Synaptic's, hid-core is currently trying to bind hid-rmi to all\of
the HID devices. This patch ensures that hid-rmi only binds to the mouse interface.
related bug:
https://bugzilla.kernel.org/show_bug.cgi?id=80091
Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
---
drivers/hid/hid-core.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 8ed66fd..f10e768 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -783,7 +783,9 @@ static int hid_scan_report(struct hid_device *hid)
* Vendor specific handlings
*/
if ((hid->vendor == USB_VENDOR_ID_SYNAPTICS) &&
- (hid->group == HID_GROUP_GENERIC))
+ (hid->group == HID_GROUP_GENERIC) &&
+ /* only bind to the mouse interface of composite USB devices */
+ (hid->bus != BUS_USB || hid->type == HID_TYPE_USBMOUSE))
/* hid-rmi should take care of them, not hid-generic */
hid->group = HID_GROUP_RMI;
--
1.9.1
next prev parent reply other threads:[~2014-07-17 23:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-17 23:14 [PATCH v2] HID: rmi: check that report ids exist in the report_id_hash before accessing their size Andrew Duggan
2014-07-17 23:14 ` Andrew Duggan [this message]
2014-07-18 13:07 ` [PATCH] HID: rmi: only bind the hid-rmi driver to the mouse interface of composite USB devices Benjamin Tissoires
2014-07-29 9:29 ` Jiri Kosina
2014-07-18 13:03 ` [PATCH v2] HID: rmi: check that report ids exist in the report_id_hash before accessing their size Benjamin Tissoires
2014-07-29 9:29 ` Jiri Kosina
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