Various hardware fixups

sr_mod non parallel I/O

symptom: while parallel writing to 5 DVD drives, speed is topped to the one of one single drive
reason: global locks introduced
demo: just eject all of them in parallel, and it will be serialized

r8152 hangs

Bus 003 Device 003: ID 0bda:8153 Realtek Semiconductor Corp.
USB Ethernet 1Gbit/s or less
hangs with high traffic (trigger with apt-get update) issue with 3.16.0-9-amd64:
   NETDEV WATCHDOG: eth3 (r8152): transmit queue 0 timed out
   [300923.448452] r8152 3-1.4:1.0 eth3: Tx timeout

solved with:
   cd /usr/src
   # tested with 2.11 release (commit 48b6eb1cd896c0e37099eccdc34e2fca9ba8af59)
   git clone
   cd realtek-r8152-linux

temp test:
   lsmod | grep r81
   rmmod r8152
   insmod r8152.ko

at each kernel change:
   make clean; make
   dpkg-divert --rename /lib/modules/$(uname -r)/kernel/drivers/net/usb/r8152.ko
   cp r8152.ko /lib/modules/$(uname -r)/kernel/drivers/net/usb/r8152.ko

-- MarcSCHAEFER - 07 Jun 2019
Topic revision: r1 - 07 Jun 2019, MarcSCHAEFER

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