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authorBenjamin Tissoires <benjamin.tissoires@redhat.com>2018-09-04 15:31:14 +0200
committerJiri Kosina <jkosina@suse.cz>2018-09-04 21:31:43 +0200
commit0d6c3011409135ea84e2a231b013a22017ff999a (patch)
treed15a6125044b26af915fca021375d61c3035086e /drivers/hid
parentec6adef5fbc3f140c70e7499fdad818acb3a46c6 (diff)
downloadlinux-0d6c3011409135ea84e2a231b013a22017ff999a.tar.bz2
HID: core: fix grouping by application
commit f07b3c1da92d ("HID: generic: create one input report per application type") was effectively the same as MULTI_INPUT: hidinput->report was never set, so hidinput_match_application() always returned null. Fix that by testing against the real application. Note that this breaks some old eGalax touchscreens that expect MULTI_INPUT instead of HID_QUIRK_INPUT_PER_APP. Enable this quirk for backward compatibility on all non-Win8 touchscreens. link: https://bugzilla.kernel.org/show_bug.cgi?id=200847 link: https://bugzilla.kernel.org/show_bug.cgi?id=200849 link: https://bugs.archlinux.org/task/59699 link: https://github.com/NixOS/nixpkgs/issues/45165 Cc: stable@vger.kernel.org # v4.18+ Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-input.c4
-rw-r--r--drivers/hid/hid-multitouch.c3
2 files changed, 5 insertions, 2 deletions
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index ac201817a2dd..a481eaf39e88 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -1582,6 +1582,7 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid,
input_dev->dev.parent = &hid->dev;
hidinput->input = input_dev;
+ hidinput->application = application;
list_add_tail(&hidinput->list, &hid->inputs);
INIT_LIST_HEAD(&hidinput->reports);
@@ -1677,8 +1678,7 @@ static struct hid_input *hidinput_match_application(struct hid_report *report)
struct hid_input *hidinput;
list_for_each_entry(hidinput, &hid->inputs, list) {
- if (hidinput->report &&
- hidinput->report->application == report->application)
+ if (hidinput->application == report->application)
return hidinput;
}
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 88da991ef256..da954f3f4da7 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1697,6 +1697,9 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
*/
hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
+ if (id->group != HID_GROUP_MULTITOUCH_WIN_8)
+ hdev->quirks |= HID_QUIRK_MULTI_INPUT;
+
timer_setup(&td->release_timer, mt_expired_timeout, 0);
ret = hid_parse(hdev);