Add AVR32 kernel patches for linux-2.6.21.5

toolchain/kernel-headers/linux-2.6.21.5-006-wait-for-async-scanned-block-devices.patch

@@ -0,0 +1,55 @@
+diff --git a/init/do_mounts.c b/init/do_mounts.c
+index 46fe407..efc134c 100644
+--- a/init/do_mounts.c
++++ b/init/do_mounts.c
+@@ -25,6 +25,7 @@ int __initdata rd_doload;	/* 1 = load RAM disk, 0 = don't load */
+ int root_mountflags = MS_RDONLY | MS_SILENT;
+ char * __initdata root_device_name;
+ static char __initdata saved_root_name[64];
++int __initdata root_wait;
+ 
+ dev_t ROOT_DEV;
+ 
+@@ -216,6 +217,14 @@ static int __init root_dev_setup(char *line)
+ 
+ __setup("root=", root_dev_setup);
+ 
++static int __init rootwait_setup(char *line)
++{
++	root_wait = simple_strtol(line,NULL,0);
++	return 1;
++}
++
++__setup("rootwait=", rootwait_setup);
++
+ static char * __initdata root_mount_data;
+ static int __init root_data_setup(char *str)
+ {
+@@ -438,11 +447,24 @@ void __init prepare_namespace(void)
+ 			root_device_name += 5;
+ 	}
+ 
+-	is_floppy = MAJOR(ROOT_DEV) == FLOPPY_MAJOR;
+-
+ 	if (initrd_load())
+ 		goto out;
+ 
++	/* wait for any asynchronous scanning to complete */
++	if ((ROOT_DEV == 0) && root_wait) {
++		printk(KERN_INFO "Waiting for root device %s...\n",
++			saved_root_name);
++		do {
++			while (driver_probe_done() != 0)
++				msleep(100);
++			ROOT_DEV = name_to_dev_t(saved_root_name);
++			if (ROOT_DEV == 0)
++				msleep(100);
++		} while (ROOT_DEV == 0);
++	}
++
++	is_floppy = MAJOR(ROOT_DEV) == FLOPPY_MAJOR;
++
+ 	if (is_floppy && rd_doload && rd_load_disk(0))
+ 		ROOT_DEV = Root_RAM0;
+ 
+