Bug#823552: endless "supply vcc not found, using dummy regulator"

["Steinar H. Gunderson" <sgunderson@bigfoot.com>]

Package: linux-image-4.5.0-2-armmp-lpae
Version: 4.5.2-1
Severity: normal

Hi,

I'm installing an ODROID XU4 (Exynos 5422-based). After upgrading it to sid and
installing 4.5.0-2-armmp-lpae (and generating the uInitrd myself, and updating
boot.ini -- I'm not entirely sure if this can be done more automatically), the
serial console shows tens of thousands of these messages on boot:

[   47.161428] exynos-dwc3 usb@12000000: no suspend clk specified               
[   47.162811] usb_phy_generic.49646.auto supply vcc not found, using dummy regulator 
[   47.163532] usb_phy_generic.49647.auto supply vcc not found, using dummy regulator

They appear to go on forever, blocking boot -- until I set the log level to 0
to suppress them (using magic SysRq over the serial console), nothing else seems
to happen on the machine.

As a reference point, this did not happen with 4.4.0-0.bpo.1-armmp from
jessie-backports, but I'm unsure if this is because of the kernel or due to
something in the initramfs differing between jessie and sid.