On 05/30/2016 09:09 PM, Oscar C wrote:
I'm trying to boot a udoo quad board (imx6, similar to cubox-i). It
boots and I can login but one of the usb ports work. Looking at the
dmesg output I see that there are unknown symbol errors when the usb
modules are being loaded:
[ 12.905677] libphy: fec_enet_mii_bus: probed
[ 12.910917] fec 2188000.ethernet eth0: registered PHC device 0
[ 12.979507] usbcore: registered new interface driver usbfs
[ 12.985146] usbcore: registered new interface driver hub
[ 12.990659] usbcore: registered new device driver usb
[ 13.175153] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 13.407405] usb_otg_fsm: module license 'unspecified' taints kernel.
This message means that the driver author didn't specify the license in
the source file.
[ 13.413995] Disabling lock debugging due to kernel
[ 13.420407] usb_otg_fsm: Unknown symbol usb_bus_start_enum (err 0)
[ 13.426990] usb_otg_fsm: Unknown symbol usb_control_msg (err 0)
[ 13.433189] usb_otg_fsm: Unknown symbol usb_hub_find_child (err 0)
[ 13.463782] usb_otg_fsm: Unknown symbol usb_bus_start_enum (err 0)
[ 13.471592] usb_otg_fsm: Unknown symbol usb_control_msg (err 0)
[ 13.478116] usb_otg_fsm: Unknown symbol usb_hub_find_child (err 0)
and those most probably mean that the driver is trying to use functions
/ variables that are defined outside its own scope, but not declared
with EXPORT_SYMBOL() which would be needed to have something get used by
a non-GPL module. And indeed, in the source you can see
which declares one of those "missing" symbols, but only to GPL modules.
The fix would be to add a
line in the usb_otg_fsm driver source file. At least if that's an
accurate description and the file is indeed GPL (which I guess it is,
since it's upstream). Send that patch upstream, mark it as CC
stable(a)vger.kernel.org. It will get into our tree automatically then. If
you like we can also backport it earlier if going via stable turns out
too slow for you :).
[ 13.531556] fsl-asrc 2034000.asrc: driver
[ 13.544423] fsl-asoc-card sound: ASoC: CPU DAI (null) not registered
[ 13.544764] fsl-ssi-dai 2028000.ssi: No cache defaults, reading
back from HW
[ 13.558141] fsl-asoc-card sound: snd_soc_register_card failed (-517)
[ 13.566862] fsl-asoc-card sound: ASoC: CODEC DAI ac97-hifi not
[ 13.568653] Adding 505292k swap on /dev/mmcblk0p3. Priority:-1
extents:1 across:505292k SSFS
Since the 4.6 kernel is not yet on factory (when will it land?), I'm
using the version from the kernel:stable repo.
What can I do to fix it?
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