On 2013-12-02 20:07, Dmitry Torokhov wrote:

On Mon, Dec 02, 2013 at 07:35:47PM +0100, Manuel Krause wrote:

quoted

On 2013-12-02 17:45, Dmitry Torokhov wrote:

quoted

On Mon, Dec 02, 2013 at 08:38:16AM -0800, Dmitry Torokhov wrote:

quoted

On Monday, December 02, 2013 05:08:28 PM Manuel Krause wrote:

quoted

On 2013-12-01 16:43, Peter Hurley wrote:

quoted

[ +cc Dmitry Torokhov, Greg Kroah-Hartman, linux-input,
linux-serial ]

On 11/26/2013 05:19 PM, Manuel Krause wrote:

quoted

Since kernel 3.12.0 I have a problem with hibernate+resume
not reactivating my serial mouse (trackball) with my HP notebook.
Kernels 3.11.0 til 9 don't show this behaviour.

Machine:           HP Notebook with Core2Duo CPU (Penryn)
Distro:            openSUSE 12.3, 64bit, continuously updated
Desktop:           KDE 4.11.3
MESA & drm & Xorg: most recent ones from:

http://download.opensuse.org/repositories/home:/pontostroy:/X11/openSUSE_
12.3/x86_64/

Current kernel:    3.12.1 vanilla from openSUSE repos, with

                     -ck1 and BFQ patches

The Logitech Trackman Marble FX is a PS/2 device and connected
via an original Logitech
PS/2-COM-port adapter and manually configured via my xorg.conf.

At first, I blamed the -ck1 patches from Con Kolivas for this
behaviour that I use in
addition  to the BFQ patches, what has showed up as not right:
This happens with the
normal vanilla kernel
schedulers for CPU and disk I/O, too.

By coincidence I found a weird(!) way to reactivate the serial
mouse:
(1) call Hibernate (suspend-to-disk) from KDE desktop as normal
(2) resume --> the PS/2 touchpad is working, the serial
trackball NOT
(3) call suspend-to-RAM (Sleep) from KDE, serial trackball
still dead
(4) execute `setserial -a /dev/ttyS0` in a konsole window or a
tty* console
(5) ==> serial trackball is back with all configuration from
xorg.conf

It's fully reproducible over multiple hibernations. This also
happens when calling
`pm-hibernate` (to-disk) and `pm-suspend` (to-RAM) and the
setserial from a root shell
in KDE or any tty*.

Please, _always_CC_me_ -- as I'm not on the kernel mailing list.

Manuel,

Please attach complete dmesgs (zipped, if necessary) of a
suspend/resume cycle
on a vanilla 3.12.x (where resume fails) _and_ a vanilla 3.11.x
(where resume succeeds).

For the test configurations, please do not apply patches.

Regards,
Peter Hurley

Thank you very much for your reply!
Attached you'll find a zip file with the two edited dmesg logs of
plain vanilla kernel runs.

I have to add, that the resumes _do_ succeed in both cases, only
the serial mouse doesn't get activated after hibernate in 3.12.x
automatically. Just scan for and compare the lines indicating
"serial 00:08: disabled" or "serial 00:08: activated". In 3.12.x
the activation doesn't happen after hibernate, but after
suspend-to-ram (sleep). That only after STR and not before a
setserial gets my mouse back... a miracle. ;-)

I do not see

quoted

[  206.577370] serial 00:08: activated

in the restore from hibernation log of 3.12 which shoudl come from PNP
layer.

[dtor@dtor-d630 work]$ git log --oneline v3.11..v3.12 -- drivers/pnp/
729377d pnp: change pnp bus pm_ops to invoke pnp driver dev_pm_ops if specified
ce63e18 Merge branch 'pnp'
8ad928d ACPI / PM: Use ACPI_STATE_D3_COLD instead of ACPI_STATE_D3 everywhere
eaf140b PNP: convert PNP driver bus legacy pm_ops to dev_pm_ops

I'd start looking into these commits.

Does the following patch fixes the issue?

PNP: fix restoring devices after hibernation

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

On returning from hibernation 'restore; callback is called, not
'resume'.
This fixes breakage introduced by commit
eaf140b60ec961252083ab8adaf67aef29a362dd

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
  drivers/pnp/driver.c |    3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index a39ee38..185a24a 100644
--- a/drivers/pnp/driver.c
+++ b/drivers/pnp/driver.c

@@ -235,8 +235,9 @@ static int pnp_bus_resume(struct device *dev)

  static const struct dev_pm_ops pnp_bus_dev_pm_ops = {
  	.suspend = pnp_bus_suspend,
-	.freeze = pnp_bus_freeze,
  	.resume = pnp_bus_resume,
+	.freeze = pnp_bus_freeze,
+	.restore = pnp_bus_resume,
  };

  struct bus_type pnp_bus_type = {

YES! This patch fixes the issue!!! (Even if compiled with a patched
kernel.)   ;-)

Many thanks for your work!

Thank you Manuel, but IO think the patch is not complete as we need to
re-enable PNP devices after we make a snapshot to make sure they are
working and can handle saving the data. Coudl you please try the patch
below?

PNP: fix restoring devices after hibernation

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

On returning from hibernation 'restore; callback is called, not 
'resume'.
This fixes breakage introduced by commit
eaf140b60ec961252083ab8adaf67aef29a362dd

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
  drivers/pnp/driver.c |   12 +++++++++++-
  1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index a39ee38..2bd5c5f 100644
--- a/drivers/pnp/driver.c
+++ b/drivers/pnp/driver.c

@@ -197,6 +197,11 @@ static int pnp_bus_freeze(struct device *dev)
  	return __pnp_bus_suspend(dev, PMSG_FREEZE);
  }

+static int pnp_bus_poweroff(struct device *dev)
+{
+	return __pnp_bus_suspend(dev, PMSG_HIBERNATE);
+}
+
  static int pnp_bus_resume(struct device *dev)
  {
  	struct pnp_dev *pnp_dev = to_pnp_dev(dev);

@@ -234,9 +239,14 @@ static int pnp_bus_resume(struct device *dev)
  }

  static const struct dev_pm_ops pnp_bus_dev_pm_ops = {
+	/* Suspend callbacks */
  	.suspend = pnp_bus_suspend,
-	.freeze = pnp_bus_freeze,
  	.resume = pnp_bus_resume,
+	/* Hibernate callbacks */
+	.freeze = pnp_bus_freeze,
+	.thaw = pnp_bus_resume,
+	.poweroff = pnp_bus_poweroff,
+	.restore = pnp_bus_resume,
  };

  struct bus_type pnp_bus_type = {

ALSO, YES, this second patch version does cure the issue, on 
here, too.

Best regards, Manuel Krause