[PATCH] provide MODALIAS= enviroment variable to autoload ieee1394 modules via udev

https://bugzilla.novell.com/show_bug.cgi?id=103746

Old 2.6.13 hotplug enviroment for 'plug in firewire disk' event:

==> debug.01139.ieee1394.add.8211 <==
set -- ieee1394
UDEV_LOG='7'
ACTION='add'
DEVPATH='/class/ieee1394/00010410100036e0-0'
SUBSYSTEM='ieee1394'
SEQNUM='1139'
PHYSDEVPATH='/devices/pci0001:10/0001:10:0d.0/0001:11:0a.0/fw-host0/00010410100036e0/00010410100036e0-0'
PHYSDEVBUS='ieee1394'
VENDOR_ID='000000'
MODEL_ID='001010'
GUID='00010410100036e0'
SPECIFIER_ID='00609e'
VERSION='010483'
UDEVD_EVENT='1'

Module spb2 is not loaded.

grep sbp2 /lib/modules/2.6.13-20050901172817-default/modules.alias
alias ieee1394:ven*mo*sp0000609Ever00010483* sbp2

printf 'ieee1394:ven%08Xmo%08Xsp%08Xver%08X\n' '0x000000' '0x001010' '0x00609e' '0x010483'
ieee1394:ven00000000mo00001010sp0000609Ever00010483

modprobe -v ieee1394:ven00000000mo00001010sp0000609Ever00010483
insmod /lib/modules/2.6.13-20050901172817-default/kernel/drivers/ieee1394/sbp2.ko

Providing a MODALIAS= enviroment variable with the content above will fix it.

Signed-off-by: Olaf Hering <olh@suse.de>
Cc: Ben Collins <bcollins@debian.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/ieee1394/nodemgr.c

@@ -1068,6 +1068,8 @@ static int nodemgr_hotplug(struct class_device *cdev, char **envp, int num_envp,
 	struct unit_directory *ud;
 	int i = 0;
 	int length = 0;
+	/* ieee1394:venNmoNspNverN */
+	char buf[8 + 1 + 3 + 8 + 2 + 8 + 2 + 8 + 3 + 8 + 1];
 
 	if (!cdev)
 		return -ENODEV;
@@ -1094,6 +1096,12 @@ do {								\
 	PUT_ENVP("GUID=%016Lx", (unsigned long long)ud->ne->guid);
 	PUT_ENVP("SPECIFIER_ID=%06x", ud->specifier_id);
 	PUT_ENVP("VERSION=%06x", ud->version);
+	snprintf(buf, sizeof(buf), "ieee1394:ven%08Xmo%08Xsp%08Xver%08X",
+			ud->vendor_id,
+			ud->model_id,
+			ud->specifier_id,
+			ud->version);
+	PUT_ENVP("MODALIAS=%s", buf);
 
 #undef PUT_ENVP