On Sun 2018-12-09 08:46:50, Tony Lindgren wrote: > * Pavel Machek <[email protected]> [181209 12:13]: > > Hi! > > > > Poweroff does not seem to work on Motorola droid 4 -- it reboots. It > > seems to be problem "forever", 4.18 and 4.20-rc5 seem to be > > affected. It is bad, because when your battery is low, you get into > > reboot loop and discharge it furher, which batteries do not like. > > > > Any ideas, or at least idea how to debug this? > > Hmm can you check if this is happening with usb unloaded or > unbind? I suspect ohci or musb..
Ok, let me try: musb unbound, v4.20:
root@devuan:/sys/devices/platform/44000000.ocp/4a0ab000.usb_otg_hs#
echo 4a0ab000.usb_otg_hs > driver/unbind
(I hope I did not pull the USB too late). It rebooted instead of
poweroff. Now on 4.18:
root@devuan:/sys/devices/platform/44000000.ocp/4a062000.usbhstll# echo
4a062000.usbhstll > driver/unbind
root@devuan:/sys/devices/platform/44000000.ocp/4a062000.usbhstll#
uname -a
Linux devuan 4.18.0-rc4-88970-gf075a2c-dirty #764 SMP Mon Jul 9
12:51:47 CEST 2018 armv7l GNU/Linux
I get nice oops doing that:
[ 170.705383] ------------[ cut here ]------------
[ 170.710235] WARNING: CPU: 0 PID: 2371 at drivers/clk/clk.c:697
clk_core_unpre
pare+0xcc/0xec
[ 170.718749] Unpreparing enabled l3_init_cm:clk:0048:8
[ 170.723968] Modules linked in:
root@devuan:/sys/devices/platform/44000000.ocp/4a064000.usbhshost/4a064800.ohci#
echo 4a064800.ohci > driver/unbind
..Hmm. I'm not sure how to unbind ehci. Let me try sudo
poweroff... no, it reboots, too.
Can you check if it works for you?
Thanks,
Pavel
--
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http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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