We get a few warnings when building kernel with W=1:
drivers/scsi/megaraid/megaraid_sas_fusion.c:281:1: warning: no previous 
prototype for 'megasas_free_cmds_fusion' [-Wmissing-prototypes]
drivers/scsi/megaraid/megaraid_sas_fusion.c:714:1: warning: no previous 
prototype for 'megasas_ioc_init_fusion' [-Wmissing-prototypes]
....

In fact, these functions are declared in
drivers/scsi/megaraid/megaraid_sas_base.c, but should
be declared in a header file, thus can be recognized in other file.

So this patch adds the declarations into
drivers/scsi/megaraid/megaraid_sas_fusion.h.

Signed-off-by: Baoyou Xie <baoyou....@linaro.org>
---
 drivers/scsi/megaraid/megaraid_sas_base.c   | 13 -------------
 drivers/scsi/megaraid/megaraid_sas_fusion.h |  9 +++++++++
 2 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c 
b/drivers/scsi/megaraid/megaraid_sas_base.c
index 2d62d71..b73b6f3 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -189,25 +189,12 @@ u32
 megasas_build_and_issue_cmd(struct megasas_instance *instance,
                            struct scsi_cmnd *scmd);
 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
-void
-megasas_release_fusion(struct megasas_instance *instance);
-int
-megasas_ioc_init_fusion(struct megasas_instance *instance);
-void
-megasas_free_cmds_fusion(struct megasas_instance *instance);
-u8
-megasas_get_map_info(struct megasas_instance *instance);
-int
-megasas_sync_map_info(struct megasas_instance *instance);
 int
 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
        int seconds);
-void megasas_reset_reply_desc(struct megasas_instance *instance);
 void megasas_fusion_ocr_wq(struct work_struct *work);
 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
                                         int initial);
-int megasas_check_mpio_paths(struct megasas_instance *instance,
-                            struct scsi_cmnd *scmd);
 
 int
 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h 
b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index 80eaee2..3fe730a 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -991,5 +991,14 @@ union desc_value {
        } u;
 };
 
+void megasas_free_cmds_fusion(struct megasas_instance *instance);
+int megasas_ioc_init_fusion(struct megasas_instance *instance);
+u8 megasas_get_map_info(struct megasas_instance *instance);
+int megasas_sync_map_info(struct megasas_instance *instance);
+void megasas_release_fusion(struct megasas_instance *instance);
+void megasas_reset_reply_desc(struct megasas_instance *instance);
+int megasas_check_mpio_paths(struct megasas_instance *instance,
+                             struct scsi_cmnd *scmd);
+void megasas_fusion_ocr_wq(struct work_struct *work);
 
 #endif /* _MEGARAID_SAS_FUSION_H_ */
-- 
2.7.4

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