tree 9d17e23f66e4db98171f7342f3ddf27af9664b49
parent 97f46ae45c70857e459b7f8df1fc2807e7bd90a9
author FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> 1208533395 +0900
committer James Bottomley <James.Bottomley@HansenPartnership.com> 1208895392 -0500

[SCSI] scsi_transport_sas: fix the lifetime of sas bsg objects

scsi_transport_sas calls blk_cleanup_queue too early for bsg
queues. If a user holds a sas_host, end_device, or expander device
open, remove the device, then send a request to it, we get a kernel
crash. We need to call blk_cleanup_queue in the release callback as we
do with scsi devices.

This patch moves blk_cleanup_queue to sas_expander_release and
sas_end_device_release from sas_bsg_remove. sas_host can't use the
release callback in struct device so use bsg's release callback.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>