Staging: hv: Get rid of cdb from struct hv_storvsc_request

In preparation for consolidating all I/O request state, get rid of the
cdb field from struct hv_storvsc_request and instead
directly copy the command into struct vmscsi_request.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/blkvsc_drv.c

@@ -949,7 +949,8 @@ static int blkvsc_submit_request(struct blkvsc_request *blkvsc_req,
 	vm_srb->lun = 0;	 /* this is not really used at all */
 
 	vm_srb->cdb_length = blkvsc_req->cmd_len;
-	storvsc_req->cdb = blkvsc_req->cmnd;
+
+	memcpy(vm_srb->cdb, blkvsc_req->cmnd, vm_srb->cdb_length);
 
 	storvsc_req->sense_buffer = blkvsc_req->sense_buffer;
 	storvsc_req->sense_buffer_size = SCSI_SENSE_BUFFERSIZE;

drivers/staging/hv/storvsc.c

@@ -301,7 +301,8 @@ static void stor_vsc_on_io_completion(struct hv_device *device,
 	if (request->status != 0 || vstor_packet->vm_srb.srb_status != 1) {
 		DPRINT_WARN(STORVSC,
 			    "cmd 0x%x scsi status 0x%x srb status 0x%x\n",
-			    request->cdb[0], vstor_packet->vm_srb.scsi_status,
+			    vstor_packet->vm_srb.cdb[0],
+			    vstor_packet->vm_srb.scsi_status,
 			    vstor_packet->vm_srb.srb_status);
 	}
 
@@ -551,9 +552,6 @@ int stor_vsc_on_io_request(struct hv_device *device,
 
 	vstor_packet->vm_srb.sense_info_length = SENSE_BUFFER_SIZE;
 
-	/* Copy over the scsi command descriptor block */
-	memcpy(&vstor_packet->vm_srb.cdb, request->cdb,
-		 vstor_packet->vm_srb.cdb_length);
 
 	vstor_packet->vm_srb.data_transfer_length = request->data_buffer.len;
 

drivers/staging/hv/storvsc_api.h

@@ -66,7 +66,6 @@ struct storvsc_request_extension {
 };
 
 struct hv_storvsc_request {
-	u8 *cdb;
 	u32 status;
 	u32 bytes_xfer;
 

drivers/staging/hv/storvsc_drv.c

@@ -781,7 +781,8 @@ static int storvsc_queuecommand_lck(struct scsi_cmnd *scmnd,
 
 	/* ASSERT(scmnd->cmd_len <= 16); */
 	vm_srb->cdb_length = scmnd->cmd_len;
-	request->cdb = scmnd->cmnd;
+
+	memcpy(vm_srb->cdb, scmnd->cmnd, vm_srb->cdb_length);
 
 	request->sense_buffer = scmnd->sense_buffer;
 	request->sense_buffer_size = SCSI_SENSE_BUFFERSIZE;