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| author | Kay Sievers <kay.sievers@vrfy.org> | 2007-08-14 14:10:39 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-01-11 18:22:30 -0600 |
| commit | 285e9670d91cdeb6b6693729950339cb45410fdc (patch) | |
| tree | 5edd3f6d19ca92b408ed07daa85cc0361a7a9a72 /drivers/scsi/sr.c | |
| parent | d0c4c9d4a2e46f052178806c4004d52cd3ae040f (diff) | |
| download | lwn-285e9670d91cdeb6b6693729950339cb45410fdc.tar.gz lwn-285e9670d91cdeb6b6693729950339cb45410fdc.zip | |
[SCSI] sr,sd: send media state change modification events
This will send for a card reader slot (remove/add media):
UEVENT[1187091572.155884] change /devices/pci0000:00/0000:00:1d.7/usb5/5-2/5-2:1.0/host7/target7:0:0/7:0:0:0 (scsi)
UEVENT[1187091572.162314] remove /block/sdb/sdb1 (block)
UEVENT[1187091572.172464] add /block/sdb/sdb1 (block)
UEVENT[1187091572.175408] change /devices/pci0000:00/0000:00:1d.7/usb5/5-2/5-2:1.0/host7/target7:0:0/7:0:0:0 (scsi)
and for a DVD drive (add/eject media):
UEVENT[1187091590.189159] change /devices/pci0000:00/0000:00:1f.1/host4/target4:0:0/4:0:0:0 (scsi)
UEVENT[1187091590.957124] add /module/isofs (module)
UEVENT[1187091604.468207] change /devices/pci0000:00/0000:00:1f.1/host4/target4:0:0/4:0:0:0 (scsi)
Userspace gets events, even for unpartitioned media. This unifies
the event handling for asynchronoous events (AN) and events caused by
perodical polling the device from userspace.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
[jejb: modified for new event API]
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/sr.c')
| -rw-r--r-- | drivers/scsi/sr.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index c61999031141..7702681d93f9 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -192,8 +192,9 @@ static int sr_media_change(struct cdrom_device_info *cdi, int slot) * and we will figure it out later once the drive is * available again. */ cd->device->changed = 1; - return 1; /* This will force a flush, if called from - * check_disk_change */ + /* This will force a flush, if called from check_disk_change */ + retval = 1; + goto out; }; retval = cd->device->changed; @@ -203,9 +204,16 @@ static int sr_media_change(struct cdrom_device_info *cdi, int slot) if (retval) { /* check multisession offset etc */ sr_cd_check(cdi); - get_sectorsize(cd); } + +out: + /* Notify userspace, that media has changed. */ + if (retval != cd->previous_state) + sdev_evt_send_simple(cd->device, SDEV_EVT_MEDIA_CHANGE, + GFP_KERNEL); + cd->previous_state = retval; + return retval; } |