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authorDan Williams <dan.j.williams@intel.com>2011-09-21 22:05:34 -0700
committerJames Bottomley <JBottomley@Parallels.com>2011-10-16 10:54:02 -0500
commit1a34c0640137eed8dabdac3a68a7a84116ac9e0d (patch)
treefbe141523906f19c10c80bbdbdd4a69446c5fa44 /include/scsi/libsas.h
parent29f366e8a99fdced4c0b5417a478d7539adc66d3 (diff)
downloadlinux-next-1a34c0640137eed8dabdac3a68a7a84116ac9e0d.tar.gz
[SCSI] libsas: fix port->dev_list locking
port->dev_list maintains a list of devices attached to a given sas root port. It needs to be mutated under a lock as contexts outside of the single-threaded-libsas-workqueue access the list via sas_find_dev_by_rphy(). Fixup locations where the list was being mutated without a lock. This is a follow-up to commit 5911e963 "[SCSI] libsas: remove expander from dev list on error", where Luben noted [1]: > 2/ We have unlocked list manipulations in sas_ex_discover_end_dev(), > sas_unregister_common_dev(), and sas_ex_discover_end_dev() Yes, I can see that and that is very unfortunate. [1]: http://marc.info/?l=linux-scsi&m=131480962006471&w=2 Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'include/scsi/libsas.h')
-rw-r--r--include/scsi/libsas.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index c4b7cd0b85e5..6a308d42d98f 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -656,7 +656,7 @@ int sas_discover_event(struct asd_sas_port *, enum discover_event ev);
int sas_discover_sata(struct domain_device *);
int sas_discover_end_dev(struct domain_device *);
-void sas_unregister_dev(struct domain_device *);
+void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *);
void sas_init_dev(struct domain_device *);