Remove dead code from 53c700

diff --git a/drivers/scsi/53c700.h b/drivers/scsi/53c700.h
index 91f660f0863f39560d3e9de1af0b8453b76eec61..8ff887ff8bd9aaade4ad62b91d78a792957bcfc8 100644 (file)
--- a/drivers/scsi/53c700.h
+++ b/drivers/scsi/53c700.h
@@ -136,38 +136,6 @@ NCR_700_clear_flag(Scsi_Device *SDp, __u32 flag)
        ((unsigned long)SDp->hostdata) &= ~(flag & 0xffff0000);
 }
 
-/* These represent the Nexus hashing functions.  A Nexus in SCSI terms
- * just means the identification of an outstanding command, by ITL
- * (Initiator Target Lun) or ITLQ (Initiator Target Lun Tag).  I'm not
- * very keen on XOR based hashes, so these are based on number theory
- * instead.  All you need to do is to fix your hash bucket size and
- * then choose reasonable strides which are coprime with the chosen
- * bucket size
- *
- * Note: this mathematical hash can be made very efficient, if the
- * compiler is good at optimising: Choose the number of buckets to be
- * 2^n and the modulo becomes a logical and with (2^n-1).
- * Additionally, if you chose the coprimes of the form 2^n-2^n the
- * multiplication can be done by a shift and an addition. */
-#define MAX_ITL_HASH_BUCKETS   16
-#define ITL_HASH_PRIME         7
-
-#define MAX_ITLQ_HASH_BUCKETS  64
-#define ITLQ_PUN_PRIME         7
-#define ITLQ_LUN_PRIME         3
-
-static inline int
-hash_ITL(__u8 pun, __u8 lun)
-{
-       return (pun*ITL_HASH_PRIME + lun) % MAX_ITL_HASH_BUCKETS;
-}
-
-static inline int
-hash_ITLQ(__u8 pun, __u8 lun, __u8 tag)
-{
-       return (pun*ITLQ_PUN_PRIME + lun*ITLQ_LUN_PRIME + tag) % MAX_ITLQ_HASH_BUCKETS;
-}
-
 struct NCR_700_command_slot {
        struct NCR_700_SG_List  SG[NCR_700_SG_SEGMENTS+1];
        struct NCR_700_SG_List  *pSG;
@@ -186,12 +154,8 @@ struct NCR_700_command_slot {
        /* if this command is a pci_single mapping, holds the dma address
         * for later unmapping in the done routine */
        dma_addr_t      dma_handle;
-       /* Doubly linked ITL/ITLQ list kept in strict time order
-        * (latest at the back) */
+       /* historical remnant, now used to link free commands */
        struct NCR_700_command_slot *ITL_forw;
-       struct NCR_700_command_slot *ITL_back;
-       struct NCR_700_command_slot *ITLQ_forw;
-       struct NCR_700_command_slot *ITLQ_back;
 };
 
 struct NCR_700_Host_Parameters {
@@ -238,17 +202,6 @@ struct NCR_700_Host_Parameters {
        __u8    tag_negotiated;
        __u8    rev;
        __u8    reselection_id;
-       /* flags for the host */
-
-       /* ITL list.  ALL outstanding commands are hashed here in strict
-        * order, latest at the back */
-       struct NCR_700_command_slot *ITL_Hash_forw[MAX_ITL_HASH_BUCKETS];
-       struct NCR_700_command_slot *ITL_Hash_back[MAX_ITL_HASH_BUCKETS];
-
-       /* Only tagged outstanding commands are hashed here (also latest
-        * at the back) */
-       struct NCR_700_command_slot *ITLQ_Hash_forw[MAX_ITLQ_HASH_BUCKETS];
-       struct NCR_700_command_slot *ITLQ_Hash_back[MAX_ITLQ_HASH_BUCKETS];
 
        /* Free list, singly linked by ITL_forw elements */
        struct NCR_700_command_slot *free_list;