From 34c28953aba4417414476de3b1c91617e9cd91ee Mon Sep 17 00:00:00 2001
From: "Luis R. Rodriguez" <mcgrof@do-not-panic.com>
Date: Wed, 10 Apr 2013 04:35:26 -0700
Subject: [PATCH] backports: add udev rules if required for backported
 firmware_class

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 backport/Makefile.real                        |  2 +-
 backport/scripts/backport_firmware_install.sh | 21 +++++++++++
 backport/udev/50-compat_firmware.rules        |  4 +++
 backport/udev/compat_firmware.sh              | 35 +++++++++++++++++++
 backport/udev/ubuntu/compat_firmware.sh       | 29 +++++++++++++++
 gentree.py                                    |  2 +-
 6 files changed, 91 insertions(+), 2 deletions(-)
 create mode 100755 backport/scripts/backport_firmware_install.sh
 create mode 100644 backport/udev/50-compat_firmware.rules
 create mode 100755 backport/udev/compat_firmware.sh
 create mode 100755 backport/udev/ubuntu/compat_firmware.sh

diff --git a/backport/Makefile.real b/backport/Makefile.real
index 35a1fb34c877..8842778927fa 100644
--- a/backport/Makefile.real
+++ b/backport/Makefile.real
@@ -90,6 +90,7 @@ install: modules
 	@./scripts/blacklist.sh $(KLIB)/ $(KLIB)/$(KMODDIR)
 	@./scripts/compress_modules.sh $(KLIB)/$(KMODDIR)
 	@./scripts/check_depmod.sh
+	@./scripts/backport_firmware_install.sh
 	@/sbin/depmod -ae
 	@echo
 	@echo Your backported driver modules should be installed now.
@@ -97,4 +98,3 @@ install: modules
 	@echo
 # FIXME:
 #	install/load/unload/... scripts?
-#	compat firmware class udev stuff
diff --git a/backport/scripts/backport_firmware_install.sh b/backport/scripts/backport_firmware_install.sh
new file mode 100755
index 000000000000..e4b9fb03835d
--- /dev/null
+++ b/backport/scripts/backport_firmware_install.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+if [ -f /usr/bin/lsb_release ]; then
+	LSB_RED_ID=$(/usr/bin/lsb_release -i -s)
+else
+	LSB_RED_ID="Unknown"
+fi
+
+case $LSB_RED_ID in
+"Ubuntu")
+	mkdir -p /lib/udev/ /lib/udev/rules.d/
+	cp udev/ubuntu/compat_firmware.sh /lib/udev/
+	cp udev/50-compat_firmware.rules /lib/udev/rules.d/
+        ;;
+*)
+	mkdir -p /lib/udev/ /lib/udev/rules.d/
+	cp udev/compat_firmware.sh /lib/udev/
+	cp udev/50-compat_firmware.rules /lib/udev/rules.d/
+        ;;
+esac
+
diff --git a/backport/udev/50-compat_firmware.rules b/backport/udev/50-compat_firmware.rules
new file mode 100644
index 000000000000..6473788ec464
--- /dev/null
+++ b/backport/udev/50-compat_firmware.rules
@@ -0,0 +1,4 @@
+# do not edit this file, it will be overwritten on update
+
+# compat_firmware-class requests, copies files into the kernel
+SUBSYSTEM=="compat_firmware", ACTION=="add", RUN+="compat_firmware.sh"
diff --git a/backport/udev/compat_firmware.sh b/backport/udev/compat_firmware.sh
new file mode 100755
index 000000000000..ef609e71c6df
--- /dev/null
+++ b/backport/udev/compat_firmware.sh
@@ -0,0 +1,35 @@
+#!/bin/sh -e
+
+# This is ported from Ubuntu but ubuntu uses these directories which
+# other distributions don't care about:
+# FIRMWARE_DIRS="/lib/firmware/updates/$(uname -r) /lib/firmware/updates \
+#               /lib/firmware/$(uname -r) /lib/firmware"
+# If your distribution looks for firmware in other directories
+# feel free to extend this and add your own directory here.
+#
+FIRMWARE_DIRS="/lib/firmware"
+
+err() {
+	echo "$@" >&2
+	logger -t "${0##*/}[$$]" "$@" 2>/dev/null || true
+}
+
+if [ ! -e /sys$DEVPATH/loading ]; then
+	err "udev firmware loader misses sysfs directory"
+	exit 1
+fi
+
+for DIR in $FIRMWARE_DIRS; do
+	[ -e "$DIR/$FIRMWARE" ] || continue
+	echo 1 > /sys$DEVPATH/loading
+	cat "$DIR/$FIRMWARE" > /sys$DEVPATH/data
+	echo 0 > /sys$DEVPATH/loading
+	exit 0
+done
+
+echo -1 > /sys$DEVPATH/loading
+err "Cannot find  firmware file '$FIRMWARE'"
+mkdir -p /dev/.udev/firmware-missing
+file=$(echo "$FIRMWARE" | sed 's:/:\\x2f:g')
+ln -s -f "$DEVPATH" /dev/.udev/firmware-missing/$file
+exit 1
diff --git a/backport/udev/ubuntu/compat_firmware.sh b/backport/udev/ubuntu/compat_firmware.sh
new file mode 100755
index 000000000000..9d4659a34d78
--- /dev/null
+++ b/backport/udev/ubuntu/compat_firmware.sh
@@ -0,0 +1,29 @@
+#!/bin/sh -e
+
+FIRMWARE_DIRS="/lib/firmware/updates/$(uname -r) /lib/firmware/updates \
+               /lib/firmware/$(uname -r) /lib/firmware"
+
+err() {
+	echo "$@" >&2
+	logger -t "${0##*/}[$$]" "$@" 2>/dev/null || true
+}
+
+if [ ! -e /sys$DEVPATH/loading ]; then
+	err "udev firmware loader misses sysfs directory"
+	exit 1
+fi
+
+for DIR in $FIRMWARE_DIRS; do
+	[ -e "$DIR/$FIRMWARE" ] || continue
+	echo 1 > /sys$DEVPATH/loading
+	cat "$DIR/$FIRMWARE" > /sys$DEVPATH/data
+	echo 0 > /sys$DEVPATH/loading
+	exit 0
+done
+
+echo -1 > /sys$DEVPATH/loading
+err "Cannot find  firmware file '$FIRMWARE'"
+mkdir -p /dev/.udev/firmware-missing
+file=$(echo "$FIRMWARE" | sed 's:/:\\x2f:g')
+ln -s -f "$DEVPATH" /dev/.udev/firmware-missing/$file
+exit 1
diff --git a/gentree.py b/gentree.py
index 199a2c97410f..476a3fc82672 100755
--- a/gentree.py
+++ b/gentree.py
@@ -324,7 +324,7 @@ def process(kerneldir, outdir, copy_list_file, git_revision=None,
     backport_files = [(x, x) for x in [
         'Kconfig', 'Makefile', 'Makefile.build', 'Makefile.kernel', '.gitignore',
         'Makefile.real', 'compat/', 'include/', 'kconfig/', 'defconfigs/',
-        'scripts/', '.blacklist.map',
+        'scripts/', '.blacklist.map', 'udev/',
     ]]
     if not args.git_revision:
         logwrite('Copy original source files ...')
-- 
2.30.2