src/patches/suse-2.6.27.31/patches.arch/s390-03-05-dasd-block-uevent.patch

   1 From: Gerald Schaefer <geraldsc@de.ibm.com>
   2 Subject: dasd: DASD uevents are not sent correctly
   3 References: bnc#440610,LTC#49429
   4
   5 Symptom:     by-id device links are not created
   6 Problem:     On SLES10 there was an extra patch that would send
   7              uevents for a DASD block device when it reached the
   8              online state. This code was never upstream and is now
   9              missing from SLES11.
  10 Solution:    Send change events when device reaches or leaves online
  11              state.
  12
  13 Acked-by: John Jolly <jjolly@suse.de>
  14 ---
  15  drivers/s390/block/dasd.c |   33 ++++++++++++++++++++++++++++++---
  16  1 file changed, 30 insertions(+), 3 deletions(-)
  17
  18 Index: linux-sles11/drivers/s390/block/dasd.c
  19 ===================================================================
  20 --- linux-sles11.orig/drivers/s390/block/dasd.c
  21 +++ linux-sles11/drivers/s390/block/dasd.c
  22 @@ -335,7 +335,9 @@ static int dasd_state_unfmt_to_basic(str
  23  static int
  24  dasd_state_ready_to_online(struct dasd_device * device)
  25  {
  26 -       int rc;
  27 +       int rc, i;
  28 +       struct gendisk *disk;
  29 +       struct hd_struct *p;
  30
  31         if (device->discipline->ready_to_online) {
  32                 rc = device->discipline->ready_to_online(device);
  33 @@ -343,8 +345,19 @@ dasd_state_ready_to_online(struct dasd_d
  34                         return rc;
  35         }
  36         device->state = DASD_STATE_ONLINE;
  37 -       if (device->block)
  38 +       if (device->block) {
  39                 dasd_schedule_block_bh(device->block);
  40 +
  41 +               disk = device->block->bdev->bd_disk;
  42 +               kobject_uevent(&disk->dev.kobj, KOBJ_CHANGE);
  43 +               /* send uevents for all partitions */
  44 +               for (i = 1; i < disk->minors; i++) {
  45 +                       p = disk->part[i-1];
  46 +                       if (!p || !p->nr_sects)
  47 +                               continue;
  48 +                       kobject_uevent(&p->dev.kobj, KOBJ_CHANGE);
  49 +               }
  50 +       }
  51         return 0;
  52  }
  53
  54 @@ -353,7 +366,9 @@ dasd_state_ready_to_online(struct dasd_d
  55   */
  56  static int dasd_state_online_to_ready(struct dasd_device *device)
  57  {
  58 -       int rc;
  59 +       int rc, i;
  60 +       struct gendisk *disk;
  61 +       struct hd_struct *p;
  62
  63         if (device->discipline->online_to_ready) {
  64                 rc = device->discipline->online_to_ready(device);
  65 @@ -361,6 +376,18 @@ static int dasd_state_online_to_ready(st
  66                         return rc;
  67         }
  68         device->state = DASD_STATE_READY;
  69 +
  70 +       /* send uevents for all partitions */
  71 +       if (device->block) {
  72 +               disk = device->block->bdev->bd_disk;
  73 +               for (i = 1; i < disk->minors; i++) {
  74 +                       p = disk->part[i-1];
  75 +                       if (!p || !p->nr_sects)
  76 +                               continue;
  77 +                       kobject_uevent(&p->dev.kobj, KOBJ_CHANGE);
  78 +               }
  79 +               kobject_uevent(&disk->dev.kobj, KOBJ_CHANGE);
  80 +       }
  81         return 0;
  82  }
  83