From: Greg KH <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
To: Ladislav Michl <ladis-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org>
Cc: linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: EHCI and MUSB do not discover devices without CONFIG_PM
Date: Tue, 28 Nov 2017 08:33:28 +0100 [thread overview]
Message-ID: <20171128073328.GF10757@kroah.com> (raw)
In-Reply-To: <20171127220833.GA10070@lenoch>
On Mon, Nov 27, 2017 at 11:08:33PM +0100, Ladislav Michl wrote:
> Hi there,
>
> USB hosts do not discover any connected device on OMAP3 based board
> with CONFIG_PM=n. Just enabling this option is enough to restore working
> behaviour. Nothing unusual in log. Tested 4.14.2 and 4.15-rc1. I know
> a lot of stuff depends on CONFIG_PM, but is this expected behaviour?
> Neither EHCI nor MUSB is working without CONFIG_PM.
What bus type is your controllers on? PCI? platform? Something else?
And yes, perhaps this is to be expected, why would you not want
CONFIG_PM to be enabled? :)
thanks,
greg k-h
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next prev parent reply other threads:[~2017-11-28 7:33 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-27 22:08 EHCI and MUSB do not discover devices without CONFIG_PM Ladislav Michl
2017-11-28 7:33 ` Greg KH [this message]
[not found] ` <20171128073328.GF10757-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2017-11-28 8:57 ` Ladislav Michl
2017-11-28 9:03 ` Felipe Balbi
[not found] ` <87induzseh.fsf-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-11-28 9:42 ` Ladislav Michl
2017-11-28 9:30 ` Greg KH
[not found] ` <20171128093054.GA20720-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2017-11-28 9:39 ` Ladislav Michl
2017-11-28 14:11 ` Tony Lindgren
[not found] ` <20171128141131.GR28152-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2017-11-28 14:28 ` Ladislav Michl
2017-11-28 14:39 ` Tony Lindgren
[not found] ` <20171128143913.GS28152-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2017-11-28 16:58 ` Ladislav Michl
2017-11-28 17:16 ` Tony Lindgren
2017-11-28 15:00 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1711280956560.1467-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2017-11-28 16:05 ` Ladislav Michl
2017-11-28 18:09 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1711281307250.1467-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2017-11-28 19:27 ` Ladislav Michl
2017-11-28 19:59 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1711281452520.1467-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2017-11-28 20:14 ` Ladislav Michl
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