diff -ruN linux-2.4.8-orig/drivers/block/rd.c linux-2.4.8/drivers/block/rd.c --- linux-2.4.8-orig/drivers/block/rd.c Sun Jul 15 19:15:44 2001 +++ linux-2.4.8/drivers/block/rd.c Wed Aug 15 13:34:53 2001 @@ -704,11 +704,29 @@ int swim3_fd_eject(int devnum); #endif +#ifdef CONFIG_USB_STORAGE +static void __init wait_for_usb_root_floppy(void) +{ + extern int blkdev_ops_exist(unsigned int); + long t; + + while (!blkdev_ops_exist(MAJOR(ROOT_DEV))) + schedule_timeout(HZ); + /* Extra timeout for remaining messages. */ + t = 5*HZ; + while (t > 0) + t = schedule_timeout(t); +} +#endif + static void __init rd_load_disk(int n) { #ifdef CONFIG_BLK_DEV_INITRD extern kdev_t real_root_dev; #endif +#ifdef CONFIG_USB_STORAGE + extern int usb_root_floppy_p; +#endif if (rd_doload == 0) return; @@ -717,6 +735,9 @@ #ifdef CONFIG_BLK_DEV_INITRD && MAJOR(real_root_dev) != FLOPPY_MAJOR #endif +#ifdef CONFIG_USB_STORAGE + && !usb_root_floppy_p +#endif ) return; @@ -729,6 +750,10 @@ swim3_fd_eject(MINOR(ROOT_DEV)); else if(MAJOR(real_root_dev) == FLOPPY_MAJOR) swim3_fd_eject(MINOR(real_root_dev)); +#endif +#ifdef CONFIG_USB_STORAGE + if (usb_root_floppy_p) + wait_for_usb_root_floppy(); #endif printk(KERN_NOTICE "VFS: Insert root floppy disk to be loaded into RAM disk and press ENTER\n"); diff -ruN linux-2.4.8-orig/fs/block_dev.c linux-2.4.8/fs/block_dev.c --- linux-2.4.8-orig/fs/block_dev.c Thu Aug 9 19:41:36 2001 +++ linux-2.4.8/fs/block_dev.c Sun Aug 12 23:05:13 2001 @@ -517,6 +517,14 @@ return ret; } +int blkdev_ops_exist(unsigned int major) +{ + /* major 0 is used for non-device mounts */ + if (major && major < MAX_BLKDEV) + return (blkdevs[major].bdops != 0); + return 0; +} + int register_blkdev(unsigned int major, const char * name, struct block_device_operations *bdops) { if (major == 0) { diff -ruN linux-2.4.8-orig/init/main.c linux-2.4.8/init/main.c --- linux-2.4.8-orig/init/main.c Thu Jul 5 14:31:58 2001 +++ linux-2.4.8/init/main.c Sun Aug 12 23:05:13 2001 @@ -124,6 +124,10 @@ kdev_t real_root_dev; #endif +#ifdef CONFIG_USB_STORAGE +int usb_root_floppy_p = 0; +#endif + int root_mountflags = MS_RDONLY; char *execute_command; char root_device_name[64]; @@ -303,6 +307,20 @@ } __setup("root=", root_dev_setup); + +#ifdef CONFIG_USB_STORAGE + +static int __init usb_root_floppy_setup(char *line) +{ + extern int usb_root_floppy_p; + root_dev_setup (line); + usb_root_floppy_p = 1; + return 1; +} + +__setup("usb_root_floppy=", usb_root_floppy_setup); + +#endif static int __init checksetup(char *line) {