qla2xxx: ISP27xx optimize fwdump entry table lookup.

Since the entry call array is sorted in order of entry type opcode,
the search can be terminated as soon as the search key is exceeded.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/scsi/qla2xxx/qla_tmpl.c b/drivers/scsi/qla2xxx/qla_tmpl.c
index 252de5d7bff6..29271cc7659a 100644
--- a/drivers/scsi/qla2xxx/qla_tmpl.c
+++ b/drivers/scsi/qla2xxx/qla_tmpl.c
@@ -726,7 +726,7 @@ qla27xx_fwdt_entry_other(struct scsi_qla_host *vha,
 }
 
 struct qla27xx_fwdt_entry_call {
-        int type;
+        uint type;
         int (*call)(
             struct scsi_qla_host *,
             struct qla27xx_fwdt_entry *,
@@ -759,15 +759,17 @@ static struct qla27xx_fwdt_entry_call ql27xx_fwdt_entry_call_list[] = {
         { -1                            , qla27xx_fwdt_entry_other }
 };
 
-static inline int (*qla27xx_find_entry(int type))
+static inline int (*qla27xx_find_entry(uint type))
         (struct scsi_qla_host *, struct qla27xx_fwdt_entry *, void *, ulong *)
 {
         struct qla27xx_fwdt_entry_call *list = ql27xx_fwdt_entry_call_list;
 
-        while (list->type != -1 && list->type != type)
+        while (list->type < type)
                 list++;
 
-        return list->call;
+        if (list->type == type)
+                return list->call;
+        return qla27xx_fwdt_entry_other;
 }
 
 static inline void *