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SubjectRe: `ucsi_acpi: probe of USBC000:00 failed with error -12` on Dell XPS 13 9370
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

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