[SCSI] aacraid: use sg buffer copy helper functions

This replaces aac_internal_transfer with scsi_sg_copy_to/from_buffer.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Mark Salyzyn <Mark_Salyzyn@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 17 insertions, 32 deletions

diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index b9fc9b1dde67..c947e722716e 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -379,24 +379,6 @@ int aac_get_containers(struct aac_dev *dev)
         return status;
 }
 
-static void aac_internal_transfer(struct scsi_cmnd *scsicmd, void *data, unsigned int offset, unsigned int len)
-{
-        void *buf;
-        int transfer_len;
-        struct scatterlist *sg = scsi_sglist(scsicmd);
-
-        buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
-        transfer_len = min(sg->length, len + offset);
-
-        transfer_len -= offset;
-        if (buf && transfer_len > 0)
-                memcpy(buf + offset, data, transfer_len);
-
-        flush_kernel_dcache_page(kmap_atomic_to_page(buf - sg->offset));
-        kunmap_atomic(buf - sg->offset, KM_IRQ0);
-
-}
-
 static void get_container_name_callback(void *context, struct fib * fibptr)
 {
         struct aac_get_name_resp * get_name_reply;
@@ -419,14 +401,17 @@ static void get_container_name_callback(void *context, struct fib * fibptr)
                 while (*sp == ' ')
                         ++sp;
                 if (*sp) {
+                        struct inquiry_data inq;
                         char d[sizeof(((struct inquiry_data *)NULL)->inqd_pid)];
                         int count = sizeof(d);
                         char *dp = d;
                         do {
                                 *dp++ = (*sp) ? *sp++ : ' ';
                         } while (--count > 0);
-                        aac_internal_transfer(scsicmd, d,
-                          offsetof(struct inquiry_data, inqd_pid), sizeof(d));
+
+                        scsi_sg_copy_to_buffer(scsicmd, &inq, sizeof(inq));
+                        memcpy(inq.inqd_pid, d, sizeof(d));
+                        scsi_sg_copy_from_buffer(scsicmd, &inq, sizeof(inq));
                 }
         }
 
@@ -811,7 +796,7 @@ static void get_container_serial_callback(void *context, struct fib * fibptr)
                 sp[2] = 0;
                 sp[3] = snprintf(sp+4, sizeof(sp)-4, "%08X",
                   le32_to_cpu(get_serial_reply->uid));
-                aac_internal_transfer(scsicmd, sp, 0, sizeof(sp));
+                scsi_sg_copy_from_buffer(scsicmd, sp, sizeof(sp));
         }
 
         scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
@@ -1986,8 +1971,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                                 arr[4] = 0x0;
                                 arr[5] = 0x80;
                                 arr[1] = scsicmd->cmnd[2];
-                                aac_internal_transfer(scsicmd, &inq_data, 0,
-                                  sizeof(inq_data));
+                                scsi_sg_copy_from_buffer(scsicmd, &inq_data,
+                                                         sizeof(inq_data));
                                 scsicmd->result = DID_OK << 16 |
                                   COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                         } else if (scsicmd->cmnd[2] == 0x80) {
@@ -1995,8 +1980,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                                 arr[3] = setinqserial(dev, &arr[4],
                                   scmd_id(scsicmd));
                                 arr[1] = scsicmd->cmnd[2];
-                                aac_internal_transfer(scsicmd, &inq_data, 0,
-                                  sizeof(inq_data));
+                                scsi_sg_copy_from_buffer(scsicmd, &inq_data,
+                                                         sizeof(inq_data));
                                 return aac_get_container_serial(scsicmd);
                         } else {
                                 /* vpd page not implemented */
@@ -2027,7 +2012,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                 if (cid == host->this_id) {
                         setinqstr(dev, (void *) (inq_data.inqd_vid), ARRAY_SIZE(container_types));
                         inq_data.inqd_pdt = INQD_PDT_PROC;      /* Processor device */
-                        aac_internal_transfer(scsicmd, &inq_data, 0, sizeof(inq_data));
+                        scsi_sg_copy_from_buffer(scsicmd, &inq_data,
+                                                 sizeof(inq_data));
                         scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                         scsicmd->scsi_done(scsicmd);
                         return 0;
@@ -2036,7 +2022,7 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                         return -1;
                 setinqstr(dev, (void *) (inq_data.inqd_vid), fsa_dev_ptr[cid].type);
                 inq_data.inqd_pdt = INQD_PDT_DA;        /* Direct/random access device */
-                aac_internal_transfer(scsicmd, &inq_data, 0, sizeof(inq_data));
+                scsi_sg_copy_from_buffer(scsicmd, &inq_data, sizeof(inq_data));
                 return aac_get_container_name(scsicmd);
         }
         case SERVICE_ACTION_IN:
@@ -2070,8 +2056,7 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                              + (scsicmd->cmnd[12] << 8) + scsicmd->cmnd[13]);
 
                 alloc_len = min_t(size_t, alloc_len, sizeof(cp));
-                aac_internal_transfer(scsicmd, cp, 0, alloc_len);
-
+                scsi_sg_copy_from_buffer(scsicmd, cp, alloc_len);
                 if (alloc_len < scsi_bufflen(scsicmd))
                         scsi_set_resid(scsicmd,
                                        scsi_bufflen(scsicmd) - alloc_len);
@@ -2104,7 +2089,7 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                 cp[5] = 0;
                 cp[6] = 2;
                 cp[7] = 0;
-                aac_internal_transfer(scsicmd, cp, 0, sizeof(cp));
+                scsi_sg_copy_from_buffer(scsicmd, cp, sizeof(cp));
                 /* Do not cache partition table for arrays */
                 scsicmd->device->removable = 1;
 
@@ -2139,7 +2124,7 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                         if (mode_buf_length > scsicmd->cmnd[4])
                                 mode_buf_length = scsicmd->cmnd[4];
                 }
-                aac_internal_transfer(scsicmd, mode_buf, 0, mode_buf_length);
+                scsi_sg_copy_from_buffer(scsicmd, mode_buf, mode_buf_length);
                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                 scsicmd->scsi_done(scsicmd);
 
@@ -2174,7 +2159,7 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
                         if (mode_buf_length > scsicmd->cmnd[8])
                                 mode_buf_length = scsicmd->cmnd[8];
                 }
-                aac_internal_transfer(scsicmd, mode_buf, 0, mode_buf_length);
+                scsi_sg_copy_from_buffer(scsicmd, mode_buf, mode_buf_length);
 
                 scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                 scsicmd->scsi_done(scsicmd);