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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/sd.c | |
| parent | d0c4c9d4a2e46f052178806c4004d52cd3ae040f (diff) | |
| download | linux-285e9670d91cdeb6b6693729950339cb45410fdc.tar.bz2 | |
[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/sd.c')
| -rw-r--r-- | drivers/scsi/sd.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index a69b155f39a2..18343a6acd8e 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -749,8 +749,11 @@ static int sd_media_changed(struct gendisk *disk) * can deal with it then. It is only because of unrecoverable errors * that we would ever take a device offline in the first place. */ - if (!scsi_device_online(sdp)) - goto not_present; + if (!scsi_device_online(sdp)) { + set_media_not_present(sdkp); + retval = 1; + goto out; + } /* * Using TEST_UNIT_READY enables differentiation between drive with @@ -762,6 +765,7 @@ static int sd_media_changed(struct gendisk *disk) * sd_revalidate() is called. */ retval = -ENODEV; + if (scsi_block_when_processing_errors(sdp)) retval = scsi_test_unit_ready(sdp, SD_TIMEOUT, SD_MAX_RETRIES); @@ -771,8 +775,11 @@ static int sd_media_changed(struct gendisk *disk) * and we will figure it out later once the drive is * available again. */ - if (retval) - goto not_present; + if (retval) { + set_media_not_present(sdkp); + retval = 1; + goto out; + } /* * For removable scsi disk we have to recognise the presence @@ -783,12 +790,11 @@ static int sd_media_changed(struct gendisk *disk) retval = sdp->changed; sdp->changed = 0; - +out: + if (retval != sdkp->previous_state) + sdev_evt_send_simple(sdp, SDEV_EVT_MEDIA_CHANGE, GFP_KERNEL); + sdkp->previous_state = retval; return retval; - -not_present: - set_media_not_present(sdkp); - return 1; } static int sd_sync_cache(struct scsi_disk *sdkp) |