[SCSI] libsas: Fix various sparse complaints

Annotate sas_queuecommand with locking details, and clean up a few
more sparse warnings about static/non-static declarations.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

2 files changed, 6 insertions, 4 deletions

diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index 7663841eb4cf..b784089b18d0 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -200,6 +200,10 @@ int sas_queue_up(struct sas_task *task)
  */
 int sas_queuecommand(struct scsi_cmnd *cmd,
                      void (*scsi_done)(struct scsi_cmnd *))
+        __releases(host->host_lock)
+        __acquires(dev->sata_dev.ap->lock)
+        __releases(dev->sata_dev.ap->lock)
+        __acquires(host->host_lock)
 {
         int res = 0;
         struct domain_device *dev = cmd_to_domain_dev(cmd);
@@ -410,7 +414,7 @@ static int sas_recover_I_T(struct domain_device *dev)
 }
 
 /* Find the sas_phy that's attached to this device */
-struct sas_phy *find_local_sas_phy(struct domain_device *dev)
+static struct sas_phy *find_local_sas_phy(struct domain_device *dev)
 {
         struct domain_device *pdev = dev->parent;
         struct ex_phy *exphy = NULL;
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index e42374cebf95..93248cd48373 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -563,7 +563,7 @@ struct sas_task {
         struct work_struct abort_work;
 };
 
-
+extern struct kmem_cache *sas_task_cache;
 
 #define SAS_TASK_STATE_PENDING      1
 #define SAS_TASK_STATE_DONE         2
@@ -573,7 +573,6 @@ struct sas_task {
 
 static inline struct sas_task *sas_alloc_task(gfp_t flags)
 {
-        extern struct kmem_cache *sas_task_cache;
         struct sas_task *task = kmem_cache_zalloc(sas_task_cache, flags);
 
         if (task) {
@@ -590,7 +589,6 @@ static inline struct sas_task *sas_alloc_task(gfp_t flags)
 static inline void sas_free_task(struct sas_task *task)
 {
         if (task) {
-                extern struct kmem_cache *sas_task_cache;
                 BUG_ON(!list_empty(&task->list));
                 kmem_cache_free(sas_task_cache, task);
         }