1 files changed, 22 insertions, 4 deletions

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index ba3deaddf150..82987e1850a1 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -2723,6 +2723,24 @@ static inline void finish_cmd(struct CommandList *c, u32 raw_tag)
                 complete(c->waiting);
 }
 
+static inline u32 hpsa_tag_contains_index(u32 tag)
+{
+#define DIRECT_LOOKUP_BIT 0x04
+        return tag & DIRECT_LOOKUP_BIT;
+}
+
+static inline u32 hpsa_tag_to_index(u32 tag)
+{
+#define DIRECT_LOOKUP_SHIFT 3
+        return tag >> DIRECT_LOOKUP_SHIFT;
+}
+
+static inline u32 hpsa_tag_discard_error_bits(u32 tag)
+{
+#define HPSA_ERROR_BITS 0x03
+        return tag & ~HPSA_ERROR_BITS;
+}
+
 static irqreturn_t do_hpsa_intr(int irq, void *dev_id)
 {
         struct ctlr_info *h = dev_id;
@@ -2736,15 +2754,15 @@ static irqreturn_t do_hpsa_intr(int irq, void *dev_id)
         spin_lock_irqsave(&h->lock, flags);
         while (interrupt_pending(h)) {
                 while ((raw_tag = get_next_completion(h)) != FIFO_EMPTY) {
-                        if (likely(HPSA_TAG_CONTAINS_INDEX(raw_tag))) {
-                                tag_index = HPSA_TAG_TO_INDEX(raw_tag);
+                        if (likely(hpsa_tag_contains_index(raw_tag))) {
+                                tag_index = hpsa_tag_to_index(raw_tag);
                                 if (bad_tag(h, tag_index, raw_tag))
                                         return IRQ_HANDLED;
                                 c = h->cmd_pool + tag_index;
                                 finish_cmd(c, raw_tag);
                                 continue;
                         }
-                        tag = HPSA_TAG_DISCARD_ERROR_BITS(raw_tag);
+                        tag = hpsa_tag_discard_error_bits(raw_tag);
                         c = NULL;
                         hlist_for_each_entry(c, tmp, &h->cmpQ, list) {
                                 if (c->busaddr == tag) {
@@ -2824,7 +2842,7 @@ static __devinit int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
 
         for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
                 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
-                if (HPSA_TAG_DISCARD_ERROR_BITS(tag) == paddr32)
+                if (hpsa_tag_discard_error_bits(tag) == paddr32)
                         break;
                 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
         }