Sun, 28 Oct 2018 22:06:54 +0300 tarihinde
Numan Demirdöğen [off-list ref] yazdı:

quoted

Thu, 25 Oct 2018 09:49:03 +0200 tarihinde
Pavel Machek [off-list ref] yazdı:

quoted

Hi!

Here's problem bisected down to:

commit 9d659ae14b545c4296e812c70493bfdc999b5c1c
Author: Peter Zijlstra [off-list ref]
Date:   Tue Aug 23 14:40:16 2016 +0200

    locking/mutex: Add lock handoff to avoid starvation

    Implement lock handoff to avoid lock starvation.

Numan, I assume revert of that patch on the 4.18 kernel still makes
it work?
  

Unfortunately, I could not revert
9d659ae14b545c4296e812c70493bfdc999b5c1c on kernels from 4.18.16 to
4.10-rc1 because there were too much conflicts, which I could not solve
as an "average Joe". I tried a3ea3d9b865c2a8f7fe455c7fa26db4b6fd066e3
which is parent of 9d659ae14b545c4296e812c70493bfdc999b5c1c and
succeeded to compile kernel.

git checkout a3ea3d9b865c2a8f7fe455c7fa26db4b6fd066e3

Then, I compiled kernel and rebooted with it. I tried a couples of
times suspending and resuming, all of the time keyboard worked as
expected.

With this one line patch from Takashi Iwai, keyboard is working as
expected after resuming from suspend/hibernate.

--- a/kernel/locking/mutex.c
+++ b/kernel/locking/mutex.c

@@ -59,7 +59,7 @@ EXPORT_SYMBOL(__mutex_init);
  * Bit2 indicates handoff has been done and we're waiting for pickup.
  */
 #define MUTEX_FLAG_WAITERS	0x01
-#define MUTEX_FLAG_HANDOFF	0x02
+#define MUTEX_FLAG_HANDOFF	0x00
 #define MUTEX_FLAG_PICKUP	0x04
 
 #define MUTEX_FLAGS		0x07

Thanks in advance and regards,