aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi/scsi_lib.c
diff options
context:
space:
mode:
authorHannes Reinecke <hare@suse.de>2017-08-11 08:53:47 +0200
committerMartin K. Petersen <martin.petersen@oracle.com>2017-08-24 22:28:53 -0400
commit8a97712e5314aefe16b3ffb4583a34deaa49de04 (patch)
treef7697a26c31ded4a2a97bac3fec36c90ce14228a /drivers/scsi/scsi_lib.c
parent8cd1ec78ca15f1016f6c3c683c21b3383b5cb966 (diff)
scsi: make 'state' device attribute pollable
While the 'state' attribute can (and will) change occasionally, calling 'poll()' or 'select()' on it fails as sysfs is never notified that the state has changed. With this patch calling 'poll()' or 'select()' will work properly. Signed-off-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
-rw-r--r--drivers/scsi/scsi_lib.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 4a295a630848..2afca92445c9 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -2654,6 +2654,7 @@ scsi_device_set_state(struct scsi_device *sdev, enum scsi_device_state state)
}
sdev->sdev_state = state;
+ sysfs_notify(&sdev->sdev_gendev.kobj, NULL, "state");
return 0;
illegal:
@@ -3077,6 +3078,7 @@ int scsi_internal_device_unblock_nowait(struct scsi_device *sdev,
case SDEV_BLOCK:
case SDEV_TRANSPORT_OFFLINE:
sdev->sdev_state = new_state;
+ sysfs_notify(&sdev->sdev_gendev.kobj, NULL, "state");
break;
case SDEV_CREATED_BLOCK:
if (new_state == SDEV_TRANSPORT_OFFLINE ||
@@ -3084,6 +3086,7 @@ int scsi_internal_device_unblock_nowait(struct scsi_device *sdev,
sdev->sdev_state = new_state;
else
sdev->sdev_state = SDEV_CREATED;
+ sysfs_notify(&sdev->sdev_gendev.kobj, NULL, "state");
break;
case SDEV_CANCEL:
case SDEV_OFFLINE:

Privacy Policy