cosmetic changes

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zeljkoavramovic 2020-10-05 16:04:03 +02:00 committed by GitHub
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@ -22,7 +22,7 @@ testj1939: socket(j1939): Protocol not supported
### Solution ### Solution
Above errors mean that **can-j1939** was not enabled in your kernel and you need to do it manually. There are several ways to do it. Any Linux kernel since 5.4 has **can-j1939** module, but you will probably want to install fresher version, which leads to downloading kernel sources, enabling **can-j1939** module, recompiling kernel and installing it. I will be using Debian 10.5 x64 (buster testing) virtual machine. Above errors mean that **can-j1939** was not enabled in your kernel and you need to compile it manually. There are several ways to do it. Any Linux kernel since 5.4 has **can-j1939** module, but you will probably want to install fresher version, which leads to downloading kernel sources, enabling **can-j1939** module, recompiling kernel and installing it. I will be using Debian 10.5 x64 (buster testing) virtual machine.
@ -30,7 +30,9 @@ Above errors mean that **can-j1939** was not enabled in your kernel and you need
We will download Debian patched kernel 5.8. First update your sources We will download Debian patched kernel 5.8. First update your sources
```avra@vm-debian:~$ sudo apt update``` ```
avra@vm-debian:~$ sudo apt update
```
and then see if what Debian pathed kernel source versions are available and then see if what Debian pathed kernel source versions are available
@ -45,7 +47,7 @@ linux-source-5.7 - Linux kernel source for version 5.7 with Debian patches
linux-source-5.8 - Linux kernel source for version 5.8 with Debian patches linux-source-5.8 - Linux kernel source for version 5.8 with Debian patches
``` ```
If kernel 5.8 does not show in the list (I can see it since I have already upgraded my 4.19 kernel to backported 5.7), then you will need to add backports to your sources list. Here is how my **/etc/apt/sources.list** looks like (you will need to append at least last line to yours): If kernel 5.8 does not show in your linux-sources list (it shows in mine since I have already upgraded stock 4.19 kernel to backported 5.7), then you will need to add backports to your sources list. Here is how my **/etc/apt/sources.list** looks like (you will need to append at least last line to yours):
``` ```
deb http://security.debian.org/debian-security buster/updates main contrib deb http://security.debian.org/debian-security buster/updates main contrib
@ -76,7 +78,9 @@ avra@vm-debian:/usr/src$ cd linux-source-5.8
First we need some packages for **menuconfig** First we need some packages for **menuconfig**
```sudo apt-get install libncurses5 libncurses5-dev``` ```
sudo apt-get install libncurses5 libncurses5-dev
```
copy and use our old configuration to run **menuconfig** copy and use our old configuration to run **menuconfig**
@ -106,11 +110,15 @@ and save it.
We will have to download necessary packages We will have to download necessary packages
```sudo apt install build-essential libssl-dev libelf-dev bison flex``` ```
sudo apt install build-essential libssl-dev libelf-dev bison flex
```
compile kernel (using threads to make it faster) compile kernel (using threads to make it faster)
```avra@vm-debian:/usr/src/linux-source-5.8$ sudo make -j $(nproc)``` ```
avra@vm-debian:/usr/src/linux-source-5.8$ sudo make -j $(nproc)
```
install install
@ -134,11 +142,15 @@ sudo modprobe can-j1939
and if you get no error then you can enjoy **can-j1939**. If you get some error then you might check if this alternative command works: and if you get no error then you can enjoy **can-j1939**. If you get some error then you might check if this alternative command works:
``` sudo insmod /lib/modules/5.8.10/kernel/net/can/j1939/can-j1939.ko``` ```
sudo insmod /lib/modules/5.8.10/kernel/net/can/j1939/can-j1939.ko
```
If it does then all you need to do is If it does then all you need to do is
```sudo depmod -av``` ```
sudo depmod -av
```
reboot once, and **modprobe** command from the above should finally work now. reboot once, and **modprobe** command from the above should finally work now.