Messages in this thread | | | Subject | Re: LED (leds_hp_disk) causes BUG: scheduling while atomic | From | Daniel Troeder <> | Date | Thu, 08 Jan 2009 09:04:15 +0100 |
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Am Dienstag, den 06.01.2009, 11:14 +0100 schrieb Pavel Machek: > > I have a HP Compaq nc2400 notebook, and having recently installed 2.6.28 > > (gentoo patchset, self configured), I have observed the following: > > > > When {I manually, udev automatically} load the leds_hp_disk module, my > > disk-led flashes regularly _without_ disk activity. When I look at my > > dmesg I see the following: > > Yes, that's a (mis-feature). > > > [ 724.376881] BUG: scheduling while atomic: swapper/0/0x10000100 > > [ 724.376886] Modules linked in: leds_hp_disk i915 drm snd_pcm_oss > > And that's a bug. I know what causes it, but i don't have right fix > yet. > > If you are interested, take latest -mm (mmotm from userweb) and apply > this manually: > > --- linux-mm/drivers/hwmon/hp_accel.c 2009-01-06 10:54:40.000000000 > +0100 > +++ linux/drivers/hwmon/hp_accel.c 2008-12-10 09:36:21.000000000 > +0100 > @@ -174,11 +174,35 @@ > } > > static struct led_classdev hpled_led = { > - .name = "hp:red:hddprotection", > - .default_trigger = "heartbeat", > + .name = "hp:red:hddprotect", > + .default_trigger = "none", > .brightness_set = hpled_set, > }; > > > ...led will stop blinking, and messages will be gone. (But note that > if you turn on heartbeat or similar trigger, you'll still get the > "scheduling in interrupt" nastyness...) > Pavel Hello :)
Sorry it took me so long to reply - I built a kernel based on vanilla-2.6.28 and applied patches with quilt to .DATE=2009-01-05-12-50. That worked well, except that when booted, the xfs driver corrupts each time my MUAs (evolution) configuration :(
But not your problem... the LED-scheduling-problem went away (no more blinking, on more kernel-BUG and I get:
[ 31.822317] lis3lv02d: laptop model unknown, using default axes configuration [ 31.822367] Registered led device: hp:red:hddprotect [ 32.059496] input: ST LIS3LV02DL Accelerometer as /devices/platform/lis3lv02d/input/input8 [ 32.081954] lis3lv02d driver loaded.
$ lsmod | egrep 'lis3lv02d|hp_accel' hp_accel 6656 0 led_class 3908 2 iwl3945,hp_accel lis3lv02d 5956 1 hp_accel
/sys/devices/platform/lis3lv02d /sys/bus/platform/devices/lis3lv02d /sys/bus/acpi/drivers/lis3lv02d /sys/module/lis3lv02d /sys/module/hp_accel
I was shortly confused, because CONFIG_LEDS_HP_DISK went away and got integrated into CONFIG_SENSORS_LIS3LV02D with lis3lv02d-merge-with-leds-hp-disk.patch :)
Bye, Daniel [unhandled content-type:application/pgp-signature] | |