This is a note to let you know that I've just added the patch titled
HID: fix hid_ignore_special_drivers module parameter
to the 4.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
hid-fix-hid_ignore_special_drivers-module-parameter.patch
and it can be found in the queue-4.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4392bf333388cabdad5afe5b1500002d7b9c318e Mon Sep 17 00:00:00 2001
From: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Date: Fri, 12 Feb 2016 17:10:37 +0100
Subject: HID: fix hid_ignore_special_drivers module parameter
From: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
commit 4392bf333388cabdad5afe5b1500002d7b9c318e upstream.
hid_ignore_special_drivers works fine until hid_scan_report autodetects and
reassign devices (for hid-multitouch, hid-microsoft and hid-rmi).
Simplify the handling of the parameter: if it is there, use hid-generic, no
matter what, and if not, scan the device or rely on the hid_have_special_driver
table.
This was detected while trying to disable hid-multitouch on a Surface Pro cover
which prevented to use the keyboard.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/hid/hid-core.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2616,9 +2616,10 @@ int hid_add_device(struct hid_device *hd
/*
* Scan generic devices for group information
*/
- if (hid_ignore_special_drivers ||
- (!hdev->group &&
- !hid_match_id(hdev, hid_have_special_driver))) {
+ if (hid_ignore_special_drivers) {
+ hdev->group = HID_GROUP_GENERIC;
+ } else if (!hdev->group &&
+ !hid_match_id(hdev, hid_have_special_driver)) {
ret = hid_scan_report(hdev);
if (ret)
hid_warn(hdev, "bad device descriptor (%d)\n", ret);
Patches currently in stable-queue which might be from benjamin.tissoires@xxxxxxxxxx are
queue-4.5/hid-multitouch-force-retrieving-of-win8-signature-blob.patch
queue-4.5/hid-fix-hid_ignore_special_drivers-module-parameter.patch
queue-4.5/hid-i2c-hid-fix-oob-write-in-i2c_hid_set_or_send_report.patch
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