From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: Martin Langhoff <martin.langhoff@gmail.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Linus Walleij <linus.walleij@linaro.org>,
linux-gpio@vger.kernel.org,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: Re: Diagnosing ACPI trouble related to pinctr_cherryview on 4.4.x
Date: Tue, 22 Mar 2016 17:51:59 +0200 [thread overview]
Message-ID: <20160322155159.GC2099@lahna.fi.intel.com> (raw)
In-Reply-To: <20160322154950.GB2099@lahna.fi.intel.com>
On Tue, Mar 22, 2016 at 05:49:50PM +0200, Mika Westerberg wrote:
> On Tue, Mar 22, 2016 at 11:41:38AM -0400, Martin Langhoff wrote:
> > On Tue, Mar 22, 2016 at 11:22 AM, Mika Westerberg
> > <mika.westerberg@linux.intel.com> wrote:
> > > I think this is a known issue.
> > >
> > > Please disable dw_dmac from your .config (or blacklist the module):
> > >
> > > CONFIG_DW_DMAC_CORE=n
> > > CONFIG_DW_DMAC=n
> > >
> > > You can also enable pinctrl-cherryview.c.
> >
> > Thanks for the suggestion. Did not complete boot however, got a
> > slightly different call trace, but still no go. As that trace crossed
> > _prepare_cpus I tried adding nosmp, but we still crash in
> > acpi_init->acpi_scan_init->acpi_bus_scan->acpi_bus_attach
> >
> > Any other suggestion? lspci normal and verbose follow...
>
> Do you have anything special on the kernel command line? You should not
> do anything else than disable DW_DMAC. That is enough to prevent the
> DMA hang if that's the issue.
>
> Are you able to get dmesg of the crash?
Also I can see that the LPSS devices are in PCI mode for some reason.
BTW, what laptop this is?
next prev parent reply other threads:[~2016-03-22 15:52 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CACPiFCKv=QJ0t5e=9Wm4cC4Spynx-tVCiabL7AcbcOkp_w47fQ@mail.gmail.com>
2016-03-22 15:22 ` Diagnosing ACPI trouble related to pinctr_cherryview on 4.4.x Mika Westerberg
2016-03-22 15:41 ` Martin Langhoff
2016-03-22 15:49 ` Mika Westerberg
2016-03-22 15:51 ` Mika Westerberg [this message]
2016-03-22 15:59 ` Martin Langhoff
2016-03-22 16:22 ` Mika Westerberg
2016-03-22 16:59 ` Martin Langhoff
2016-03-22 17:36 ` Andy Shevchenko
2016-03-22 17:53 ` Martin Langhoff
2016-03-22 20:32 ` Martin Langhoff
2016-03-23 11:13 ` Mika Westerberg
2016-03-23 13:25 ` Martin Langhoff
2016-03-23 11:25 ` Mika Westerberg
2016-03-23 13:26 ` Martin Langhoff
2016-03-28 20:57 ` Martin Langhoff
2016-03-29 9:15 ` Mika Westerberg
2016-03-31 9:24 ` Mika Westerberg
2016-03-30 10:33 ` Andy Shevchenko
2016-03-22 15:58 ` Andy Shevchenko
2016-03-22 15:18 Martin Langhoff
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