[patch] alsasound module unload on stop patch

alsasound.patch (text/plain), 1.77 KB, created by nvinson234 on 2009-03-27 01:51:45 UTC

--- alsasound	2009-03-26 21:23:14.000000000 -0400
+++ alsasound.new	2009-03-26 21:23:27.000000000 -0400
@@ -5,6 +5,7 @@
 
 alsastatedir=/var/lib/alsa
 alsascrdir=/etc/alsa.d
+loaded_modules=""
 
 opts="save restore"
 
@@ -46,6 +47,7 @@
 		if ! grep -q "^${DMOD} " /proc/modules ; then
 			ebegin "Loading: ${DRIVER}"
 			modprobe ${DRIVER}
+                        loaded_modules="${DRIVER} ${loaded_modules}"
 			eend $?
 		fi
 	done
@@ -58,6 +60,7 @@
 			if ! grep -q "^${DMOD} " /proc/modules ; then
 				ebegin "Loading: ${SEQUENCER}"
 				modprobe ${SEQUENCER}
+                                loaded_modules="${SEQUENCER} ${loaded_modules}"
 				eend $?
 			fi
 		done
@@ -78,6 +81,18 @@
 		eerror "ERROR: Failed to load necessary drivers"
 		return 1
 	fi
+
+        mkdir -p /var/run/alsasound
+        if [ ! -d /var/run/alsasound ] ; then
+                eerror "ERROR: Failed to create alsasound directory"
+                return 1
+        fi
+
+        echo "${loaded_modules}" > /var/run/alsasound/alsa.modules
+
+        if [ ! -f /var/run/alsasound/alsa.modules ] ; then
+            eeror "ERROR: Unable to create alsa.modules"
+        fi
 }
 
 unload_modules_24() {
@@ -105,6 +120,12 @@
 }
 
 unload_modules_26() {
+        # ensure drivers and sequencers are unloaded before everything else.
+        # see Gentoo bug: 232875
+        for module in `cat /var/run/alsasound/alsa.modules`; do
+            unload_modules_recursive "${module}"
+        done
+
 	# First of all, remove the snd module and all the modules depending
 	# on it, this should remove already most of ALSA modules.
 	lsmod | grep -q "^snd[[:space:]]" && unload_modules_recursive snd
@@ -114,6 +135,7 @@
 		unload_modules_recursive "${module}"
 	done
 
+        rm -rf /var/run/alsasound
 	lsmod | grep -vq "^snd"
 }