From 285e9670d91cdeb6b6693729950339cb45410fdc Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Tue, 14 Aug 2007 14:10:39 +0200 Subject: [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 [jejb: modified for new event API] Signed-off-by: James Bottomley --- drivers/scsi/sr.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'drivers/scsi/sr.c') 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; } -- cgit v1.2.2