host setup need instructions

[johnstile]

I fear I am missing some details about how to setup the linux host to use this program.

I am trying to use utp_com from a linux workstation to send commands to the embedded i.MX6 device via UTP.

When the embedded device boots it initializes the On The Go port for UTP, and the boot message says "Starting UTP".

My Llinux workstation's sees the usb device with vendor:066F, and product: 37FF, and udevadm monitor shows the uas driver takes over, leaving me with a kworker taking over 100% of one cpu core.
KERNEL[234.098134] remove /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0 (usb)
KERNEL[234.098213] remove /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4 (usb)
UDEV [234.100366] remove /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0 (usb)
UDEV [234.102942] remove /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4 (usb)
KERNEL[234.934201] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4 (usb)
KERNEL[234.942168] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0 (usb)
KERNEL[234.942264] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8 (scsi)
KERNEL[234.942282] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/scsi_host/host8 (scsi_host)
UDEV [234.948589] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4 (usb)
KERNEL[234.950234] add /module/uas (module)
KERNEL[234.950533] add /bus/usb/drivers/uas (drivers)
UDEV [234.951026] add /module/uas (module)
UDEV [234.952487] add /bus/usb/drivers/uas (drivers)
UDEV [234.954193] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0 (usb)
UDEV [234.955125] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8 (scsi)
UDEV [234.958795] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/scsi_host/host8 (scsi_host)
KERNEL[235.941134] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0 (scsi)
KERNEL[235.941170] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0/8:0:0:0 (scsi)
KERNEL[235.941682] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0/8:0:0:0/scsi_disk/8:0:0:0 (scsi_disk)
KERNEL[235.941702] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0/8:0:0:0/scsi_device/8:0:0:0 (scsi_device)
KERNEL[235.941726] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0/8:0:0:0/scsi_generic/sg2 (scsi_generic)
KERNEL[235.941751] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0/8:0:0:0/bsg/8:0:0:0 (bsg)
UDEV [235.942186] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0 (scsi)
UDEV [235.942782] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0/8:0:0:0 (scsi)
UDEV [235.944249] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0/8:0:0:0/scsi_disk/8:0:0:0 (scsi_disk)
UDEV [235.944598] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0/8:0:0:0/scsi_generic/sg2 (scsi_generic)
UDEV [235.944808] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0/8:0:0:0/scsi_device/8:0:0:0 (scsi_device)
UDEV [235.945498] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2.4/2-1.2.4:1.0/host8/target8:0:0/8:0:0:0/bsg/8:0:0:0 (bsg)

Can you offer some prerequisites, like essential workstation kernel modules or udev rules, or what I need to do so that the kworker does not take over 100% of a cpu core.

I am using gentoo, and my emerge --info:

Portage 2.2.26 (python 2.7.10-final-0, default/linux/amd64/13.0/desktop/kde, gcc-4.9.3, glibc-2.21-r1, 4.1.15-gentoo-r1 x86_64)

System uname: Linux-4.1.15-gentoo-r1-x86_64-Intel-R-_Core-TM-i5-2540M_CPU@_2.60GHz-with-gentoo-2.2
KiB Mem: 12156684 total, 87880 free
KiB Swap: 53809876 total, 53545688 free
Timestamp of repository gentoo: Tue, 09 Feb 2016 17:45:01 +0000
sh bash 4.3_p42-r1
ld GNU ld (Gentoo 2.25.1 p1.1) 2.25.1
app-shells/bash: 4.3_p42-r1::gentoo
dev-java/java-config: 2.2.0::gentoo
dev-lang/perl: 5.20.2::gentoo
dev-lang/python: 2.7.10-r1::gentoo, 3.4.3-r1::gentoo
dev-util/cmake: 3.3.1-r1::gentoo
dev-util/pkgconfig: 0.28-r2::gentoo
sys-apps/baselayout: 2.2::gentoo
sys-apps/openrc: 0.19.1::gentoo
sys-apps/sandbox: 2.10-r1::gentoo
sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo
sys-devel/automake: 1.10.3-r1::gentoo, 1.11.6-r1::gentoo, 1.12.6::gentoo, 1.13.4::gentoo, 1.14.1-r1::gentoo, 1.15::gentoo
sys-devel/binutils: 2.25.1-r1::gentoo
sys-devel/gcc: 4.8.5::gentoo, 4.9.3::gentoo
sys-devel/gcc-config: 1.7.3::gentoo
sys-devel/libtool: 2.4.6::gentoo
sys-devel/make: 4.1-r1::gentoo
sys-kernel/linux-headers: 4.3::gentoo (virtual/os-headers)
sys-libs/glibc: 2.21-r1::gentoo
Repositories:

gentoo
location: /usr/portage
sync-type: rsync
sync-uri: rsync://rsync.namerica.gentoo.org/gentoo-portage
priority: -1000

local_overlay
location: /usr/local/portage
masters: gentoo
priority: 0

java
location: /var/lib/layman/java
masters: gentoo
priority: 50

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="*"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=core2 -mtune=generic -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /etc/stunnel/stunnel.conf /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt /var/lib/hsqldb"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.5/ext-active/ /etc/php/apache2-php5.6/ext-active/ /etc/php/cgi-php5.5/ext-active/ /etc/php/cgi-php5.6/ext-active/ /etc/php/cli-php5.5/ext-active/ /etc/php/cli-php5.6/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/splash /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-march=core2 -mtune=generic -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--dynamic-deps=n"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LANG="en_US.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j5"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
USE="X a52 aac aalib accessibility acl acpi addc alsa amd64 apache2 arts asf autoipd avahi avi bash-completion berkdb bitmap-fonts bluetooth bookmarks branding bzip2 cairo cdda cdr cjkcodecs cleartype cli commons-codec consolekit corefonts cracklib crypt cups cxx dbus declarative divx4linux dri dsk dts dv dvd dvdnav dvdr dvdread emboss encode evolution exif exscalibar faacc faad fam ffmpeg fftw firefox flac fontconfig foomaticdb fortran frame fuse gd gdbm gif gimpprint glamor gphoto2 gpm gs gtk gtk2 gudev iconv iconvcodec icu ipod ipv6 jasper jpeg kde kde-meta kdexdeltas kerberos kipi krb5 lcms ldap libdv libnotify libtheora mad madwifi midi mmx mmxext mng modules mp3 mp4 mpeg mppe-mppc multilib mysql ncurses nls nptl nptlonly ogg opengl openmp openrc oss pam pango pcre pda pdf phonon plasma png policykit ppds profile python qt3support qt4 quicktime rar readline real samba sdl seccomp semantic-desktop session spell sql sse sse2 ssl startup-notification subtitles svg tcpd tga theora tiff truetype truetypelive type1 udev udisks unicode upower usb v4l v4l2 vaapi vdpau vorbis win32codecs wxwidgets x264 xattr xcb xcomposite xext ximian-connector xinerama xml xml2 xmms xscreensaver xv xvid zlib zvbi" ABI_X86="64" ALSA_CARDS="hda-intel" APACHE2_MODULES="actions alias auth_basic auth_digest authn_anon authn_dbd authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif so speling status unique_id userdir usertrack vhost_alias perl vdpau proxy_ajp" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="evdev synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python3_4" PYTHON_TARGETS="python3_4 python2_7" RUBY_TARGETS="ruby20 ruby21" SANE_BACKENDS="genesys" USERLAND="GNU" VIDEO_CARDS="nvidia intel" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
USE_PYTHON="2.7 3.4"
Unset: CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

[iJam42]

Try blacklisting uas. Device is shown as scsi-device, but it isn't a real disk.

++Jam