fastboot: make the raid autodetect code wait for all devices to init

The raid autodetect code really needs to have all devices probed before
it can detect raid arrays; not doing so would give rather messy situations
where arrays would get detected as degraded while they shouldn't be etc.

This is in preparation of removing the "wait for everything to init"
code that makes everyone pay, not just raid users.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c
index 693d24694a6c..c0412a9dc003 100644
--- a/init/do_mounts_md.c
+++ b/init/do_mounts_md.c
@@ -267,9 +267,16 @@ __setup("md=", md_setup);
 void __init md_run_setup(void)
 {
         create_dev("/dev/md0", MKDEV(MD_MAJOR, 0));
+
         if (raid_noautodetect)
                 printk(KERN_INFO "md: Skipping autodetection of RAID arrays. (raid=noautodetect)\n");
         else {
+                /* 
+                 * Since we don't want to detect and use half a raid array, we need to
+                 * wait for the known devices to complete their probing
+                 */
+                while (driver_probe_done() != 0)
+                        msleep(100);
                 int fd = sys_open("/dev/md0", 0, 0);
                 if (fd >= 0) {
                         sys_ioctl(fd, RAID_AUTORUN, raid_autopart);