Identify and include missing firmware for iwlwifi (mga#9541)

1 files changed, 20 insertions, 0 deletions

diff --git a/kernel/modules.pl b/kernel/modules.pl
index 70d6ed0bd..9ec6f5356 100644
--- a/kernel/modules.pl
+++ b/kernel/modules.pl
@@ -150,3 +150,23 @@ sub check() {
 
     exit $error;
 }
+
+sub list_additional_firmware {
+    my ($kern_ver) = @_;
+
+    # The firmware reported by 'modinfo iwlwifi' is the latest supported version of each firmware
+    # type. Sometimes the latest supported version is not available, and the driver falls back to
+    # an older version. This means dracut doesn't automatically identify and include the necessary
+    # firmware files, so we need to list them here (mga#9541).
+    foreach (map { /^firmware:\s+(.*)/ ? $1 : () } split("\n", `modinfo -k $kern_ver iwlwifi`)) {
+        next if -f "/lib/firmware/$_";
+        my ($basename, $version) = /(.*)-([0-9]+).ucode/;
+        while ($version-- > 0) {
+            my $filepath = "/lib/firmware/$basename-$version.ucode";
+            if (-f $filepath) {
+                print "$filepath\n";
+                last;
+            }
+        }
+    }
+}