Merge commit 'ec80a3d' (closes #11)

README.md

@@ -2,7 +2,7 @@
 
 kernel module and device tree overlay to add support for the EMC2301 fan controller on the Raspberry Pi Compute Module 4 IO Board.
 
-*Works with 5.10.y 64-bit kernels only.*
+*Works with 5.10+ 64-bit kernels only.*
 
 Uses Traverse Technologies' EMC2301 [hwmon driver](https://gitlab.traverse.com.au/ls1088firmware/traverse-sensors) for their [ten64](https://www.crowdsupply.com/traverse-technologies/ten64) board, which you should definitely check out because it's awesome.
 
@@ -22,6 +22,11 @@ sudo dkms install cm4io-fan/0.1.1
 ```
 dtoverlay=cm4io-fan,minrpm=1000,maxrpm=5000
 ```
+5. Some distributions may not automatically load the kernel module despite the devicetree entry; Raspberry Pi OS does, Ubuntu 21.10 does not, etc. 
+   To make the module load, edit `/etc/modules` (or make a new file called `/etc/modules-load.d/cm4io-fan.conf`), adding this line:
+```
+emc2301
+```
 
 ## Install from git
 1. Install dkms if you haven't already:

dkms.conf

@@ -1,6 +1,7 @@
 PACKAGE_NAME="cm4io-fan"
 PACKAGE_VERSION="0.1.1"
-BUILD_EXCLUSIVE_KERNEL="^5.[10-].*"
+# allow anything 5.10 thru 5.99, which should be fine...
+BUILD_EXCLUSIVE_KERNEL="^5\.([1-9][0-9])\..*"
 
 MAKE="make"
 CLEAN="make clean"

dkms.post_install

@@ -7,7 +7,8 @@ install_dt_overlay()
     local PWD=$(eval pwd)
     local overlay=$1
     local base_dir="${PWD%/*}/$kernelver/$arch/module"
-    local overlays_dir="/boot/overlays"
+    source /etc/default/rpi-eeprom-update
+    local overlays_dir="${BOOTFS:-/boot}/overlays"
 
     echo "$overlay:"
     echo " - Installation"

dkms.post_remove

@@ -3,7 +3,8 @@
 remove_dt_overlay()
 {
     local overlay=$1
-    local overlays_dir="/boot/overlays"
+    source /etc/default/rpi-eeprom-update
+    local overlays_dir="${BOOTFS:-/boot}/overlays"
 
     echo "${overlay}:"
     echo " - Uninstallation"