[SCSI] aic94xx: Use sas_request_addr() to provide SAS WWN if the adapter lacks one

If the aic94xx chip doesn't have a SAS address in the chip's flash memory,
make libsas get one for us.

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

3 files changed, 9 insertions, 29 deletions

diff --git a/drivers/scsi/aic94xx/aic94xx.h b/drivers/scsi/aic94xx/aic94xx.h
index eb8efdcefe4..2ef459e9cda 100644
--- a/drivers/scsi/aic94xx/aic94xx.h
+++ b/drivers/scsi/aic94xx/aic94xx.h
@@ -58,7 +58,6 @@
 
 extern struct kmem_cache *asd_dma_token_cache;
 extern struct kmem_cache *asd_ascb_cache;
-extern char sas_addr_str[2*SAS_ADDR_SIZE + 1];
 
 static inline void asd_stringify_sas_addr(char *p, const u8 *sas_addr)
 {
@@ -68,21 +67,6 @@ static inline void asd_stringify_sas_addr(char *p, const u8 *sas_addr)
         *p = '\0';
 }
 
-static inline void asd_destringify_sas_addr(u8 *sas_addr, const char *p)
-{
-        int i;
-        for (i = 0; i < SAS_ADDR_SIZE; i++) {
-                u8 h, l;
-                if (!*p)
-                        break;
-                h = isdigit(*p) ? *p-'0' : *p-'A'+10;
-                p++;
-                l = isdigit(*p) ? *p-'0' : *p-'A'+10;
-                p++;
-                sas_addr[i] = (h<<4) | l;
-        }
-}
-
 struct asd_ha_struct;
 struct asd_ascb;
 
diff --git a/drivers/scsi/aic94xx/aic94xx_hwi.c b/drivers/scsi/aic94xx/aic94xx_hwi.c
index 098b5f39cd3..940a207a42f 100644
--- a/drivers/scsi/aic94xx/aic94xx_hwi.c
+++ b/drivers/scsi/aic94xx/aic94xx_hwi.c
@@ -27,6 +27,7 @@
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include <linux/module.h>
+#include <linux/firmware.h>
 
 #include "aic94xx.h"
 #include "aic94xx_reg.h"
@@ -38,16 +39,14 @@ u32 MBAR0_SWB_SIZE;
 
 /* ---------- Initialization ---------- */
 
-static void asd_get_user_sas_addr(struct asd_ha_struct *asd_ha)
+static int asd_get_user_sas_addr(struct asd_ha_struct *asd_ha)
 {
-        extern char sas_addr_str[];
-        /* If the user has specified a WWN it overrides other settings
-         */
-        if (sas_addr_str[0] != '\0')
-                asd_destringify_sas_addr(asd_ha->hw_prof.sas_addr,
-                                         sas_addr_str);
-        else if (asd_ha->hw_prof.sas_addr[0] != 0)
-                asd_stringify_sas_addr(sas_addr_str, asd_ha->hw_prof.sas_addr);
+        /* adapter came with a sas address */
+        if (asd_ha->hw_prof.sas_addr[0])
+                return 0;
+
+        return sas_request_addr(asd_ha->sas_ha.core.shost,
+                                asd_ha->hw_prof.sas_addr);
 }
 
 static void asd_propagate_sas_addr(struct asd_ha_struct *asd_ha)
@@ -657,8 +656,7 @@ int asd_init_hw(struct asd_ha_struct *asd_ha)
 
         asd_init_ctxmem(asd_ha);
 
-        asd_get_user_sas_addr(asd_ha);
-        if (!asd_ha->hw_prof.sas_addr[0]) {
+        if (asd_get_user_sas_addr(asd_ha)) {
                 asd_printk("No SAS Address provided for %s\n",
                            pci_name(asd_ha->pcidev));
                 err = -ENODEV;
diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c
index 88d1e731b65..806fa4d9a64 100644
--- a/drivers/scsi/aic94xx/aic94xx_init.c
+++ b/drivers/scsi/aic94xx/aic94xx_init.c
@@ -56,8 +56,6 @@ MODULE_PARM_DESC(collector, "\n"
         "\tThe aic94xx SAS LLDD supports both modes.\n"
         "\tDefault: 0 (Direct Mode).\n");
 
-char sas_addr_str[2*SAS_ADDR_SIZE + 1] = "";
-
 static struct scsi_transport_template *aic94xx_transport_template;
 static int asd_scan_finished(struct Scsi_Host *, unsigned long);
 static void asd_scan_start(struct Scsi_Host *);