Traced the issue to file /etc/initramfs-tools/scripts/init-bottom/setbootconfig.sh

+ grep -q 'Hardware[[:blank:]]*:[[:blank:]]*BCM' /proc/cpuinfo
+ unset IS_REAL_SYSTEM
+ unset DO_MOUNT
+ '['  '=' --noreboot -o -n  ]
+ IS_REAL_SYSTEM=1
+ DO_MOUNT=1
+ MNTDIR=/tmp/boot
+ '[' 1 '=' 1 ]
+ '[' -d /sys/firmware/devicetree/base/soc/i2c@7e804000/mcp7941x@6f ]
+ RTC=1
+ '[' -d /sys/firmware/devicetree/base/soc/spi@7e204000/neuronspi@0 ]
+ NEURONDRV=1
+ '[' -d /sys/firmware/devicetree/base/soc/i2c@7e804000/24c01@57 ]
+ EEPROM_1=1
+ '[' -d /sys/firmware/devicetree/base/soc/i2c@7e804000/24c02@50 ]
+ EEPROM_2=1
+ '[' -n 1 -a -n 1 ]
+ EE_CONFLICT=1
+ grep -q okay /sys/firmware/devicetree/base/soc/spi@7e204000/status
+ SPI=1
+ grep -q okay /sys/firmware/devicetree/base/soc/i2c@7e804000/status
+ I2C=1
+ '[' -n 1 -a -n 1 -a -z 1 ]
+ '[' 1 '=' 1 ]
+ mkdir -p /tmp/boot
+ mount /dev/mmcblk0p1 /tmp/boot
+ echo 'dtparam=i2c_arm=on'
+ echo 'dtoverlay=i2c-rtc,mcp7941x'
+ '['  '=' 1 ]
+ echo 'dtoverlay=neuron-spi-new'
+ rm -f /tmp/boot/config-unipi.inc
+ sed -i 's/include config-unipi\.inc/include config_unipi.inc/' /tmp/boot/config.txt
+ INCLUDE='include config_unipi.inc'
+ grep -q -e '^[[:blank:]]*include config_unipi.inc' /tmp/boot/config.txt
+ '[' 1 '=' 1 ]
+ umount /tmp/boot
+ rmdir /tmp/boot
+ sync
+ echo REBOOT
REBOOT
+ exit 0
done.

There seem to exist both /sys/firmware/devicetree/base/soc/i2c@7e804000/24c02@50 and /sys/firmware/devicetree/base/soc/i2c@7e804000/24c01@57 folders in my systems, setting the EE_CONFLICT flag. If I comment out the line that sets the flag and reconfigure the package, everything seems to be working OK.

+ grep -q 'Hardware[[:blank:]]*:[[:blank:]]*BCM' /proc/cpuinfo
+ unset IS_REAL_SYSTEM
+ unset DO_MOUNT
+ '['  '=' --noreboot -o -n  ]
+ IS_REAL_SYSTEM=1
+ DO_MOUNT=1
+ MNTDIR=/tmp/boot
+ '[' 1 '=' 1 ]
+ '[' -d /sys/firmware/devicetree/base/soc/i2c@7e804000/mcp7941x@6f ]
+ RTC=1
+ '[' -d /sys/firmware/devicetree/base/soc/spi@7e204000/neuronspi@0 ]
+ NEURONDRV=1
+ '[' -d /sys/firmware/devicetree/base/soc/i2c@7e804000/24c01@57 ]
+ EEPROM_1=1
+ '[' -d /sys/firmware/devicetree/base/soc/i2c@7e804000/24c02@50 ]
+ EEPROM_2=1
+ grep -q okay /sys/firmware/devicetree/base/soc/spi@7e204000/status
+ SPI=1
+ grep -q okay /sys/firmware/devicetree/base/soc/i2c@7e804000/status
+ I2C=1
+ '[' -n 1 -a -n 1 -a -z  ]
+ echo 24c02 0x50
sh: write error: Device or resource busy
+ '[' -f /sys/bus/i2c/devices/1-0050/eeprom ]
+ echo 0x50
sh: write error: No such file or directory
+ echo 24c01 0x57
sh: write error: Device or resource busy
+ '[' -f /sys/bus/i2c/devices/1-0057/eeprom ]
+ IS_NEURON=1
+ '[' '(' -n 1 -o -n  ')' -a -n 1 -a -n 1 ]
+ '[' -n  ]
+ '[' -n 1 ]
+ echo OK
OK
+ exit 0
done.

Is there a particular reason for this "conflict" test? Also, rebooting after applying the configs seems a bit extreme, since if anything goes wrong and system goes into an infinite reboot loop, it is a pain to debug and fix...

Hi @Martin-Kudláček,

found another issue on latest rpi kernel.

Building initial module for 4.19.93+
Error!  Build of unipi.ko failed for: 4.19.93+ (armv7l)
Consult the make.log in the build directory
/var/lib/dkms/unipi/1.36/build/ for more information.
root@vkplc-home:~# cat /var/lib/dkms/unipi/1.36/build/make.log 
DKMS make.log for unipi-1.36 for kernel 4.19.93+ (armv7l)
Wed 22 Jan 2020 12:33:22 PM EET
make: Entering directory '/usr/src/linux-headers-4.19.93+'
  CC [M]  /var/lib/dkms/unipi/1.36/build/unipi/src/unipi_spi.o
  CC [M]  /var/lib/dkms/unipi/1.36/build/unipi/src/unipi_iio.o
  CC [M]  /var/lib/dkms/unipi/1.36/build/unipi/src/unipi_gpio.o
  CC [M]  /var/lib/dkms/unipi/1.36/build/unipi/src/unipi_uart.o
/var/lib/dkms/unipi/1.36/build/unipi/src/unipi_uart.c: In function ‘neuronspi_uart_handle_rx’:
/var/lib/dkms/unipi/1.36/build/unipi/src/unipi_uart.c:320:31: error: passing argument 1 of ‘uart_handle_sysrq_char’ from incompatible pointer type [-Werror=incompatible-pointer-types]
    if (uart_handle_sysrq_char(port, ch))
                               ^~~~
In file included from /var/lib/dkms/unipi/1.36/build/unipi/src/unipi_common.h:36,
                 from /var/lib/dkms/unipi/1.36/build/unipi/src/unipi_uart.h:22,
                 from /var/lib/dkms/unipi/1.36/build/unipi/src/unipi_uart.c:19:
./include/linux/serial_core.h:514:42: note: expected ‘struct uart_port *’ but argument is of type ‘struct neuronspi_port *’
 uart_handle_sysrq_char(struct uart_port *port, unsigned int ch) { return 0; }
                        ~~~~~~~~~~~~~~~~~~^~~~
  CC [M]  /var/lib/dkms/unipi/1.36/build/unipi/src/unipi_sysfs.o
cc1: some warnings being treated as errors
make[1]: *** [scripts/Makefile.build:303: /var/lib/dkms/unipi/1.36/build/unipi/src/unipi_uart.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1522: _module_/var/lib/dkms/unipi/1.36/build/unipi] Error 2
make: Leaving directory '/usr/src/linux-headers-4.19.93+'
make: Entering directory '/usr/src/linux-headers-4.19.93+'
  CC [M]  /var/lib/dkms/unipi/1.36/build/rtc-unipi/rtc-unipi.o
/var/lib/dkms/unipi/1.36/build/rtc-unipi/rtc-unipi.c: In function ‘rtc_unipi_probe’:
/var/lib/dkms/unipi/1.36/build/rtc-unipi/rtc-unipi.c:666:6: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
      struct nvmem_config nvmem_cfg = {
      ^~~~~~
  Building modules, stage 2.
  MODPOST 1 modules
  CC      /var/lib/dkms/unipi/1.36/build/rtc-unipi/rtc-unipi.mod.o
  LD [M]  /var/lib/dkms/unipi/1.36/build/rtc-unipi/rtc-unipi.ko
make: Leaving directory '/usr/src/linux-headers-4.19.93+'```

Line 320 in unipi_uart.c

if (uart_handle_sysrq_char(port, ch))

passes "port" as an arqument to uart_handle_sysrq_char, which is of type "struct neuronspi_port", but uart_handle_sysrq_char expects a type of "struct uart_port", which is part of struct neuronspi_port as seen on unipi_common.h.

Changing line 320 as below seems to fix the issue.

if (uart_handle_sysrq_char(&port->port, ch))

@martin-kudláček said in unipi-kernel-modules-dkms does not generate modules on upgrade:

1.2.19.test.20191220083937

I can confirm the package works as intended on my systems.

Thanks,
Achilleas

One more patch against the latest version that renames the old file during package configuration, because if it gets upgraded on a live system, the previously inserted code is not executed (script exits early if devices are found)

--- setbootconfig.sh.orig	2019-12-19 21:39:51.490185707 +0200
+++ setbootconfig.sh	2019-12-19 22:04:27.094799784 +0200
@@ -9,6 +9,10 @@
 if [ "$1" = "--noreboot" -o -n "${DESTDIR}" ]; then
     ## called from package install
     MNTDIR=/boot
+    # Move old file using '-' instead of '_'
+    [ -f "${MNTDIR}/config-unipi.inc" ] && mv -f "${MNTDIR}/config-unipi.inc" "${MNTDIR}/config_unipi.inc"
+    # Change include using '-' instead of '_'
+    sed -i "s/include config-unipi\.inc/include config_unipi.inc/" "${MNTDIR}/config.txt"
     # check if running from "real" Neuron system
     grep -q '^/dev/mmcblk[[:digit:]]p1 /boot ' /proc/mounts && IS_REAL_SYSTEM=1
 else

This cleaned up my system perfectly doing a dpkg-reconfigure unipi-common so I suppose it should be working on the package being upgraded also. I can test one of my systems if you generate a testing package to see if it applies cleanly.

Hi @martin-kudláček,
thanks for the reward.

Can't find the testing repository url, can you please send it?

Thanks,
Achilleas

Upon further investigation, I have located the issue.
dkms checks for installed kernels using the presence of files in /boot directory, including config-* files
As you can see on a normal x64 debian:

akots@xps:~$ ls -l /boot/config-*
-rw-r--r-- 1 root root 235827 Nov 12 10:46 /boot/config-5.3.0-23-generic
-rw-r--r-- 1 root root 235885 Nov 14 00:41 /boot/config-5.3.0-24-generic

On raspbian, package unipi-common installs two scripts

root@basementplc:# dpkg -S /etc/initramfs-tools/scripts/init-bottom/setbootconfig.sh
unipi-common: /etc/initramfs-tools/scripts/init-bottom/setbootconfig.sh
root@basementplc:~# dpkg -S /etc/kernel/postinst.d/initrd-config
unipi-common: /etc/kernel/postinst.d/initrd-config

These two scripts create two files in /boot matching the config-* expression

root@basementplc:/etc# ls -l /boot/config-*
-rwxr-xr-x 1 root root 212 Nov 10 11:01 /boot/config-initrd.inc
-rwxr-xr-x 1 root root 108 Sep 29 05:38 /boot/config-unipi.inc

These are the culpit. Renaming these to config_initrd.inc and config_unipi.inc, and changing the relevant includes in /boot/config.txt fixes the issue.

So, you need to patch unipi-common in order to create files that don't match files that dkms mistakes for kernel configs.
Attached patches for both files.

--- initrd-config.orig	2019-12-18 16:18:34.483277993 +0200
+++ initrd-config	2019-12-18 16:19:31.032380354 +0200
@@ -1,10 +1,15 @@
 #!/bin/bash
 
 CONFIGTXT=/boot/config.txt
-CONFIGINC=config-initrd.inc
+CONFIGINC=config_initrd.inc
 PATHINC="/boot/${CONFIGINC}"
 
-# check or insert include directive  into config.txt  
+# Remove old file using '-' instead of '_'
+rm -f "/boot/config-initrd.inc"
+# Change include using '-' instead of '_'
+sed -i "s/include config-initrd\.inc/include config_initrd.inc/" "${CONFIGTXT}"
+
+# check or insert include directive into config.txt  
 INCLUDE="include ${CONFIGINC}"
 grep -q -e "^[[:blank:]]*${INCLUDE}" "${CONFIGTXT}" || sed "1 i${INCLUDE}" -i "${CONFIGTXT}"

--- setbootconfig.sh.orig	2019-09-20 12:43:10.000000000 +0300
+++ setbootconfig.sh	2019-12-18 16:34:06.618599153 +0200
@@ -54,10 +54,15 @@
 	echo "dtoverlay=i2c-rtc,mcp7941x"
 	echo "dtoverlay=unipiee"
 	[ "$IS_UNIPI1" = "1" ] || echo "dtoverlay=neuron-spi-new"
-) >"${MNTDIR}/config-unipi.inc"
+) >"${MNTDIR}/config_unipi.inc"
+
+# Remove old file using '-' instead of '_'
+rm -f "${MNTDIR}/config-unipi.inc"
+# Change include using '-' instead of '_'
+sed -i "s/include config-unipi\.inc/include config_unipi.inc/" "${MNTDIR}/config.txt"
 
 # check or insert include into config.txt
-INCLUDE="include config-unipi.inc"
+INCLUDE="include config_unipi.inc"
 grep -q -e "^[[:blank:]]*${INCLUDE}" "${MNTDIR}/config.txt" || sed "1 i${INCLUDE}" -i "${MNTDIR}/config.txt"
 
 if [ "${DO_MOUNT}" = "1" ]; then

Hi @martin-kudláček,

Initial installation of unipi-kernel-modules-dkms or replacing unipi-kernel-modules works. Upgrading unipi-kernel-modules-dkms to a newer version doesn't work.

Using raspbian and packages from https://repo.unipi.technology/debian. Happens on both stretch and buster.

Unpacking unipi-kernel-modules-dkms (1.36) over (1.34) ...
Setting up unipi-kernel-modules-dkms (1.36) ...
Loading new unipi-1.36 DKMS files...
dpkg: warning: version 'initrd.inc-initrd.inc' has bad syntax: version number does 
not start with digit
dpkg: warning: version 'unipi.inc-unipi.inc' has bad syntax: version number does no
t start with digit
dpkg: warning: version 'initrd.inc-initrd.inc' has bad syntax: version number does 
not start with digit
It is likely that 4.19.75-v7+ belongs to a chroot's host
Building for unipi.inc
Module build for kernel unipi.inc was skipped since the
kernel headers for this kernel does not seem to be installed.
root@basementplc:~# find /lib/modules -iname '*unipi*'
root@basementplc:~#