[regression, bisected] adb trackpad disappears after suspend to ram

Jan Scholz
2009-05-28T07:59:38Z

Jan Scholz <scholz@fias.uni-frankfurt.de> writes:

> Hi,
>
> On my PowerBook6,5 (iBook G4) the trackpad does not show up on the
> adb-bus after resuming from suspend to ram. This happens in roughly 50%
> of the resume cycles.
> Affected kernel versions: v2.6.30_rc1 through _rc7

I bisected the regression and found the first bad commit to be:
2ed8d2b3a81bdbb0418301628ccdb008ac9f40b7
"PM: Rework handling of interrupts during suspend-resume"

To those of you I cc'ed: sorry for the noise, but you were the ones that
get_maintainers.pl spit out when asking for *adb*-files.

In addition to the diff of the lshal output I posted before, here is the
diff in the output of lsadb:

--- lsadb-ok.out 2009-05-28 08:53:09.000000000 +0200
+++ lsadb-notouchpad.out 2009-05-28 08:55:59.000000000 +0200
@@ -1,35 +1,24 @@

Devices connected to the ADB-Bus: (PMU: 12)

D R raw data decoded data
-------------------------------------------------------------------------------------
2.3: [62 c4] Encode Device
Apple Macintosh PowerBook G3 Keyboard (ISO layout)
Exceptional Event enabled
Service Request enabled
2: [ff ff] Qualifier: (not all must be supported)
Fn-key Delete Caps-Lock Reset Control
Shift Option Apple Num-Lock Scroll-Lock
Scroll-Lock-LED Caps-Lock-LED Num-Lock-LED
1: [05 01] Special keys need Fn Key
0:

- 3.3: [23 04] Relative-Position Device
- Extended Mouse Protokoll
- Exceptional Event disabled
- Service Request enabled
- 2: [08 48 03 00 00 00 00 00]
- 1: [74 70 61 64 01 90 03 04] Mouse type: tpad
- resolution: 400 dpi
- Device class: Trackpad
- buttons: 4
- 0:
-
7.3: [67 1f] Misc. Device
Powerbook G3 (Pismo) Button Device
Exceptional Event enabled
Service Request enabled
2:
1:
0:

>
> Here is a diff of the output of lshal before and after the trackpad vanished:
>
> --- lshal-ok.out 2009-05-25 17:00:28.000000000 +0200
> +++ lshal-notouchpad.out 2009-05-25 17:04:42.000000000 +0200
> @@ -1,5 +1,5 @@
>
> -Dumping 81 device(s) from the Global Device List:
> +Dumping 80 device(s) from the Global Device List:
> -------------------------------------------------
> udi = '/org/freedesktop/Hal/devices/computer'
> info.addons = {'hald-addon-cpufreq'} (string list)
> @@ -95,21 +95,6 @@
> linux.subsystem = 'input' (string)
> linux.sysfs_path = '/sys/devices/virtual/input/input4/event4' (string)
>
> -udi = '/org/freedesktop/Hal/devices/computer_logicaldev_input_2'
> - info.capabilities = {'input', 'input.mouse'} (string list)
> - info.category = 'input' (string)
> - info.parent = '/org/freedesktop/Hal/devices/computer' (string)
> - info.product = 'ADB mouse' (string)
> - info.subsystem = 'input' (string)
> - info.udi = '/org/freedesktop/Hal/devices/computer_logicaldev_input_2' (string)
> - input.device = '/dev/input/event3' (string)
> - input.product = 'ADB mouse' (string)
> - input.x11_driver = 'evdev' (string)
> - linux.device_file = '/dev/input/event3' (string)
> - linux.hotplug_type = 2 (0x2) (int)
> - linux.subsystem = 'input' (string)
> - linux.sysfs_path = '/sys/devices/virtual/input/input3/event3' (string)
> -
> udi = '/org/freedesktop/Hal/devices/computer_logicaldev_input_1'
> info.addons.singleton = {'hald-addon-input'} (string list)
> info.capabilities = {'input', 'input.keys', 'button'} (string list)
> @@ -1820,6 +1805,6 @@
> pci.vendor_id = 4203 (0x106b) (int)
>
>
> -Dumped 81 device(s) from the Global Device List.
> +Dumped 80 device(s) from the Global Device List.
> ------------------------------------------------
>
> Please let me know if you need more info.
>
> Regards,
> Jan Scholz
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/

--
Jan Scholz ____ ____ __ ___
( ___)(_ _) /__\ / __)
Frankfurt Institute for Advanced Studies )__) _)(_ /(__)\ \__ \
(__) (____)(__)(__)(___/
Goethe Universitaet Frankfurt
Ruth-Moufang-Str. 1 Tel. 069-798-47534
60438 Frankfurt am Main