Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2338545aafbecce55bbc651fb3f63ebf7468b6fb
Commit:     2338545aafbecce55bbc651fb3f63ebf7468b6fb
Parent:     45333ffa6ffd2f493fc3853481984b6e60b4fb93
Author:     Boaz Harrosh <[EMAIL PROTECTED]>
AuthorDate: Sun Jul 29 22:29:02 2007 +0300
Committer:  James Bottomley <[EMAIL PROTECTED]>
CommitDate: Sat Aug 4 09:14:49 2007 -0500

    [SCSI] aha152x: use data accessors and !use_sg cleanup
    
    And finally this is the regular !use_sg cleanup
    and use of data accessors.
    
    Signed-off-by: Boaz Harrosh <[EMAIL PROTECTED]>
    Signed-off-by: James Bottomley <[EMAIL PROTECTED]>
---
 drivers/scsi/aha152x.c |   91 +++++++++++++++++++++++++-----------------------
 1 files changed, 47 insertions(+), 44 deletions(-)

diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index cf49ed5..d30a307 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -322,6 +322,12 @@ static LIST_HEAD(aha152x_host_list);
                         (cmd) ? ((cmd)->device->id & 0x0f) : -1, \
                        (cmd) ? ((cmd)->device->lun & 0x07) : -1
 
+static inline void
+CMD_INC_RESID(struct scsi_cmnd *cmd, int inc)
+{
+       scsi_set_resid(cmd, scsi_get_resid(cmd) + inc);
+}
+
 #define DELAY_DEFAULT 1000
 
 #if defined(PCMCIA)
@@ -975,13 +981,13 @@ static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, 
struct completion *complete,
 #if defined(AHA152X_DEBUG)
        if (HOSTDATA(shpnt)->debug & debug_queue) {
                printk(INFO_LEAD "queue: %p; cmd_len=%d pieces=%d size=%u 
cmnd=",
-                      CMDINFO(SCpnt), SCpnt, SCpnt->cmd_len, SCpnt->use_sg, 
SCpnt->request_bufflen);
+                      CMDINFO(SCpnt), SCpnt, SCpnt->cmd_len,
+                      scsi_sg_count(SCpnt), scsi_bufflen(SCpnt));
                __scsi_print_command(SCpnt->cmnd);
        }
 #endif
 
        SCpnt->scsi_done        = done;
-       SCpnt->resid            = SCpnt->request_bufflen;
        SCpnt->SCp.phase        = not_issued | phase;
        SCpnt->SCp.Status       = 0x1; /* Ilegal status by SCSI standard */
        SCpnt->SCp.Message      = 0;
@@ -1011,30 +1017,24 @@ static int aha152x_internal_queue(Scsi_Cmnd *SCpnt, 
struct completion *complete,
           SCp.buffers_residual : left buffers in list
           SCp.phase            : current state of the command */
 
-       if (phase & (check_condition|resetting)) {
+       if ((phase & (check_condition|resetting)) || !scsi_sglist(SCpnt)) {
                if (phase & check_condition) {
                        SCpnt->SCp.ptr           = SCpnt->sense_buffer;
                        SCpnt->SCp.this_residual = sizeof(SCpnt->sense_buffer);
-                       SCpnt->resid             = sizeof(SCpnt->sense_buffer);
+                       scsi_set_resid(SCpnt, sizeof(SCpnt->sense_buffer));
                } else {
                        SCpnt->SCp.ptr           = NULL;
                        SCpnt->SCp.this_residual = 0;
-                       SCpnt->resid             = 0;
+                       scsi_set_resid(SCpnt, 0);
                }
                SCpnt->SCp.buffer           = NULL;
                SCpnt->SCp.buffers_residual = 0;
        } else {
-       if (SCpnt->use_sg) {
-               SCpnt->SCp.buffer           = (struct scatterlist *) 
SCpnt->request_buffer;
+               scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
+               SCpnt->SCp.buffer           = scsi_sglist(SCpnt);
                SCpnt->SCp.ptr              = SG_ADDRESS(SCpnt->SCp.buffer);
                SCpnt->SCp.this_residual    = SCpnt->SCp.buffer->length;
-               SCpnt->SCp.buffers_residual = SCpnt->use_sg - 1;
-       } else {
-               SCpnt->SCp.ptr              = (char *) SCpnt->request_buffer;
-               SCpnt->SCp.this_residual    = SCpnt->request_bufflen;
-               SCpnt->SCp.buffer           = NULL;
-               SCpnt->SCp.buffers_residual = 0;
-       }
+               SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1;
        }
 
        DO_LOCK(flags);
@@ -1525,8 +1525,8 @@ static void busfree_run(struct Scsi_Host *shpnt)
                        /* target sent DISCONNECT */
                        DPRINTK(debug_selection, DEBUG_LEAD "target 
disconnected at %d/%d\n",
                                CMDINFO(CURRENT_SC),
-                               CURRENT_SC->resid,
-                               CURRENT_SC->request_bufflen);
+                               scsi_get_resid(CURRENT_SC),
+                               scsi_bufflen(CURRENT_SC));
 #if defined(AHA152X_STAT)
                        HOSTDATA(shpnt)->disconnections++;
 #endif
@@ -1564,7 +1564,7 @@ static void busfree_run(struct Scsi_Host *shpnt)
                        /* restore old command */
                        memcpy(cmd->cmnd, sc->aha_orig_cmnd, sizeof(cmd->cmnd));
                        cmd->cmd_len = sc->aha_orig_cmd_len;
-                       cmd->resid = sc->aha_orig_resid;
+                       scsi_set_resid(cmd, sc->aha_orig_resid);
 
                        cmd->SCp.Status = SAM_STAT_CHECK_CONDITION;
 
@@ -1594,7 +1594,7 @@ static void busfree_run(struct Scsi_Host *shpnt)
                                memcpy(sc->aha_orig_cmnd, ptr->cmnd,
                                                            sizeof(ptr->cmnd));
                                sc->aha_orig_cmd_len = ptr->cmd_len;
-                               sc->aha_orig_resid = ptr->resid;
+                               sc->aha_orig_resid = scsi_get_resid(ptr);
 
                                ptr->cmnd[0]         = REQUEST_SENSE;
                                ptr->cmnd[1]         = 0;
@@ -2179,7 +2179,8 @@ static void datai_init(struct Scsi_Host *shpnt)
        DATA_LEN=0;
        DPRINTK(debug_datai,
                DEBUG_LEAD "datai_init: request_bufflen=%d resid=%d\n",
-               CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, 
CURRENT_SC->resid);
+               CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),
+               scsi_get_resid(CURRENT_SC));
 }
 
 static void datai_run(struct Scsi_Host *shpnt)
@@ -2292,11 +2293,12 @@ static void datai_run(struct Scsi_Host *shpnt)
 
 static void datai_end(struct Scsi_Host *shpnt)
 {
-       CURRENT_SC->resid -= GETSTCNT();
+       CMD_INC_RESID(CURRENT_SC, -GETSTCNT());
 
        DPRINTK(debug_datai,
                DEBUG_LEAD "datai_end: request_bufflen=%d resid=%d stcnt=%d\n",
-               CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, 
CURRENT_SC->resid, GETSTCNT());
+               CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),
+               scsi_get_resid(CURRENT_SC), GETSTCNT());
 
        SETPORT(SXFRCTL0, CH1|CLRSTCNT);
        SETPORT(DMACNTRL0, 0);
@@ -2317,11 +2319,12 @@ static void datao_init(struct Scsi_Host *shpnt)
        SETPORT(SIMODE0, 0);
        SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE );
 
-       DATA_LEN = CURRENT_SC->resid;
+       DATA_LEN = scsi_get_resid(CURRENT_SC);
 
        DPRINTK(debug_datao,
                DEBUG_LEAD "datao_init: request_bufflen=%d; resid=%d\n",
-               CMDINFO(CURRENT_SC), CURRENT_SC->request_bufflen, 
CURRENT_SC->resid);
+               CMDINFO(CURRENT_SC), scsi_bufflen(CURRENT_SC),
+               scsi_get_resid(CURRENT_SC));
 }
 
 static void datao_run(struct Scsi_Host *shpnt)
@@ -2345,7 +2348,7 @@ static void datao_run(struct Scsi_Host *shpnt)
                        SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT);
                        SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++);
                        CURRENT_SC->SCp.this_residual--;
-                       CURRENT_SC->resid--;
+                       CMD_INC_RESID(CURRENT_SC, -1);
                        SETPORT(DMACNTRL0,WRITE_READ|ENDMA);
                }
 
@@ -2354,7 +2357,7 @@ static void datao_run(struct Scsi_Host *shpnt)
                        outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count);
                        CURRENT_SC->SCp.ptr           += 2 * data_count;
                        CURRENT_SC->SCp.this_residual -= 2 * data_count;
-                       CURRENT_SC->resid             -= 2 * data_count;
+                       CMD_INC_RESID(CURRENT_SC, -2 * data_count);
                }
 
                if(CURRENT_SC->SCp.this_residual==0 && 
CURRENT_SC->SCp.buffers_residual>0) {
@@ -2380,35 +2383,34 @@ static void datao_run(struct Scsi_Host *shpnt)
 static void datao_end(struct Scsi_Host *shpnt)
 {
        if(TESTLO(DMASTAT, DFIFOEMP)) {
-               int data_count = (DATA_LEN - CURRENT_SC->resid) - GETSTCNT();
+               int data_count = (DATA_LEN - scsi_get_resid(CURRENT_SC)) -
+                                                                   GETSTCNT();
 
                DPRINTK(debug_datao, DEBUG_LEAD "datao: %d bytes to resend (%d 
written, %d transferred)\n",
                        CMDINFO(CURRENT_SC),
                        data_count,
-                       DATA_LEN-CURRENT_SC->resid,
+                       DATA_LEN - scsi_get_resid(CURRENT_SC),
                        GETSTCNT());
 
-               CURRENT_SC->resid += data_count;
+               CMD_INC_RESID(CURRENT_SC, data_count);
 
-               if(CURRENT_SC->use_sg) {
-                       data_count -= CURRENT_SC->SCp.ptr - 
SG_ADDRESS(CURRENT_SC->SCp.buffer);
-                       while(data_count>0) {
-                               CURRENT_SC->SCp.buffer--;
-                               CURRENT_SC->SCp.buffers_residual++;
-                               data_count -= CURRENT_SC->SCp.buffer->length;
-                       }
-                       CURRENT_SC->SCp.ptr           = 
SG_ADDRESS(CURRENT_SC->SCp.buffer) - data_count;
-                       CURRENT_SC->SCp.this_residual = 
CURRENT_SC->SCp.buffer->length + data_count;
-               } else {
-                       CURRENT_SC->SCp.ptr           -= data_count;
-                       CURRENT_SC->SCp.this_residual += data_count;
+               data_count -= CURRENT_SC->SCp.ptr -
+                                            SG_ADDRESS(CURRENT_SC->SCp.buffer);
+               while(data_count>0) {
+                       CURRENT_SC->SCp.buffer--;
+                       CURRENT_SC->SCp.buffers_residual++;
+                       data_count -= CURRENT_SC->SCp.buffer->length;
                }
+               CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) -
+                                                                    data_count;
+               CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length +
+                                                                    data_count;
        }
 
        DPRINTK(debug_datao, DEBUG_LEAD "datao_end: request_bufflen=%d; 
resid=%d; stcnt=%d\n",
                CMDINFO(CURRENT_SC),
-               CURRENT_SC->request_bufflen,
-               CURRENT_SC->resid,
+               scsi_bufflen(CURRENT_SC),
+               scsi_get_resid(CURRENT_SC),
                GETSTCNT());
 
        SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT);
@@ -2935,7 +2937,7 @@ static void show_command(Scsi_Cmnd *ptr)
        __scsi_print_command(ptr->cmnd);
 
        printk(KERN_DEBUG "); request_bufflen=%d; resid=%d; phase |",
-              ptr->request_bufflen, ptr->resid);
+              scsi_bufflen(ptr), scsi_get_resid(ptr));
 
        if (ptr->SCp.phase & not_issued)
                printk("not issued|");
@@ -3005,7 +3007,8 @@ static int get_command(char *pos, Scsi_Cmnd * ptr)
                SPRINTF("0x%02x ", ptr->cmnd[i]);
 
        SPRINTF("); resid=%d; residual=%d; buffers=%d; phase |",
-               ptr->resid, ptr->SCp.this_residual, ptr->SCp.buffers_residual);
+               scsi_get_resid(ptr), ptr->SCp.this_residual,
+               ptr->SCp.buffers_residual);
 
        if (ptr->SCp.phase & not_issued)
                SPRINTF("not issued|");
-
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