lkml.org 
[lkml]   [2018]   [Feb]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3.18 01/36] Input: do not emit unneeded EV_SYN when suspending
Date
3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

commit 00159f19a5057cb779146afce1cceede692af346 upstream.

Do not emit EV_SYN/SYN_REPORT on suspend if there were no keys that are
still pressed as we are suspending the device (and in all other cases when
input core is forcibly releasing keys via input_dev_release_keys() call).

Reviewed-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Bo Hu <bohu@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/input/input.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -668,6 +668,7 @@ EXPORT_SYMBOL(input_close_device);
*/
static void input_dev_release_keys(struct input_dev *dev)
{
+ bool need_sync = false;
int code;

if (is_event_supported(EV_KEY, dev->evbit, EV_MAX)) {
@@ -675,9 +676,11 @@ static void input_dev_release_keys(struc
if (is_event_supported(code, dev->keybit, KEY_MAX) &&
__test_and_clear_bit(code, dev->key)) {
input_pass_event(dev, EV_KEY, code, 0);
+ need_sync = true;
}
}
- input_pass_event(dev, EV_SYN, SYN_REPORT, 1);
+ if (need_sync)
+ input_pass_event(dev, EV_SYN, SYN_REPORT, 1);
}
}


\
 
 \ /
  Last update: 2018-02-05 19:46    [W:0.209 / U:1.656 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site