From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Jiri Kosina <jkosina@suse.cz>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] HID: input: call input_sync() when automatically releasing a key
Date: Thu, 9 Jul 2015 14:33:21 -0700 [thread overview]
Message-ID: <20150709213321.GA9268@dtor-ws> (raw)
We need to emit EV_SYN/SYN_REPORT between key press and release, otherwise
userspace is allowed to "swallow" the event.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
Observed this with Plantronics headsets...
drivers/hid/hid-input.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 008e89b..50caf14 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -1162,8 +1162,11 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct
input_event(input, usage->type, usage->code, value);
- if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
+ if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
+ usage->type == EV_KEY && value) {
+ input_sync(input);
input_event(input, usage->type, usage->code, 0);
+ }
}
void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
--
2.4.3.573.g4eafbef
--
Dmitry
next reply other threads:[~2015-07-09 21:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-09 21:33 Dmitry Torokhov [this message]
2015-07-10 9:35 ` [PATCH] HID: input: call input_sync() when automatically releasing a key Jiri Kosina
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