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Date:   Tue, 15 May 2018 18:00:47 +0200
From:   Greg KH <greg@kroah.com>
To:     Paul Menzel <pmenzel+linux-usb@molgen.mpg.de>
Cc:     Heikki Krogerus <heikki.krogerus@linux.intel.com>,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        Mario Limonciello <mario.limonciello@dell.com>
Subject: Re: `ucsi_acpi: probe of USBC000:00 failed with error -12` on Dell
 XPS 13 9370
Message-ID: <20180515160047.GB26720@kroah.com>
References: <9365397f-7206-728e-ee76-146629bfd186@molgen.mpg.de>
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On Tue, May 15, 2018 at 04:34:03PM +0200, Paul Menzel wrote:
> Dear Linux folks,
> 
> 
> Linux 4.17-rc5 shows the error below on the Dell XPS 13 9370 with Debian
> Sid/unstable.
> 
> ```
> […]
> [    0.440240] usb: port power management may be unreliable
> [    0.441358] usbcore: registered new interface driver usb-storage
> [    0.441367] usbcore: registered new interface driver usbserial_generic
> [    0.441369] usbserial: USB Serial support registered for generic
> [    0.441383] ioremap error for 0x3f799000-0x3f79a000, requested 0x2, got
> 0x0
> [    0.441518] ucsi_acpi: probe of USBC000:00 failed with error -12
> […]
> ```
> 
> 1.  Are the ioremap and ucsi_acpi error related or is a separate report
> needed?

The ioremap error is what causes ucsi_acpi to fail the probe call (-12
is "out of memory".)

> 2.  Do you know the reason for the ucsi_acpi error?

the call to ioremap failed.

Does this device really have a working typec connector?  Does normal USB
devices work with it?

thanks,

greg k-h