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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-04-19 00:43:14 +0900
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-04-22 15:16:32 -0500
commit97f46ae45c70857e459b7f8df1fc2807e7bd90a9 (patch)
tree7e7245349c433f67be23c6a75c3936c0466b59d6 /drivers/scsi/scsi_transport_sas.c
parent[SCSI] rework scsi_target allocation (diff)
downloadlinux-dev-97f46ae45c70857e459b7f8df1fc2807e7bd90a9.tar.xz
linux-dev-97f46ae45c70857e459b7f8df1fc2807e7bd90a9.zip
[SCSI] bsg: add release callback support
This patch adds release callback support, which is called when a bsg device goes away. bsg_register_queue() takes a pointer to a callback function. This feature is useful for stuff like sas_host that can't use the release callback in struct device. If a caller doesn't need bsg's release callback, it can call bsg_register_queue() with NULL pointer (e.g. scsi devices can use release callback in struct device so they don't need bsg's callback). With this patch, bsg uses kref for refcounts on bsg devices instead of get/put_device in fops->open/release. bsg calls put_device and the caller's release callback (if it was registered) in kref_put's release. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to '')
-rw-r--r--drivers/scsi/scsi_transport_sas.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index 27ec625ab771..94ff29f7c34b 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -219,7 +219,7 @@ static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
if (!q)
return -ENOMEM;
- error = bsg_register_queue(q, dev, name);
+ error = bsg_register_queue(q, dev, name, NULL);
if (error) {
blk_cleanup_queue(q);
return -ENOMEM;