Staging: hv: Get rid of the forward declaration of blkvsc_do_read_capacity16()
Get rid of the forward declaration of blkvsc_do_read_capacity16() by moving the code around. 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>
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@ -769,6 +769,90 @@ static int blkvsc_do_read_capacity(struct block_device_context *blkdev)
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return 0;
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}
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static int blkvsc_do_read_capacity16(struct block_device_context *blkdev)
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{
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struct blkvsc_request *blkvsc_req;
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struct page *page_buf;
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unsigned char *buf;
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struct scsi_sense_hdr sense_hdr;
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struct vmscsi_request *vm_srb;
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DPRINT_DBG(BLKVSC_DRV, "blkvsc_do_read_capacity16()\n");
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blkdev->sector_size = 0;
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blkdev->capacity = 0;
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blkdev->media_not_present = 0; /* assume a disk is present */
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blkvsc_req = kmem_cache_zalloc(blkdev->request_pool, GFP_KERNEL);
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if (!blkvsc_req)
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return -ENOMEM;
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memset(blkvsc_req, 0, sizeof(struct blkvsc_request));
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vm_srb = &blkvsc_req->request.vstor_packet.vm_srb;
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page_buf = alloc_page(GFP_KERNEL);
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if (!page_buf) {
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kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
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return -ENOMEM;
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}
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init_completion(&blkvsc_req->request.wait_event);
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blkvsc_req->dev = blkdev;
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blkvsc_req->req = NULL;
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blkvsc_req->write = 0;
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blkvsc_req->request.data_buffer.pfn_array[0] =
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page_to_pfn(page_buf);
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blkvsc_req->request.data_buffer.offset = 0;
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blkvsc_req->request.data_buffer.len = 12;
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blkvsc_req->cmnd[0] = 0x9E; /* READ_CAPACITY16; */
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blkvsc_req->cmd_len = 16;
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/*
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* Set this here since the completion routine may be invoked
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* and completed before we return
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*/
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blkvsc_submit_request(blkvsc_req, blkvsc_cmd_completion);
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DPRINT_DBG(BLKVSC_DRV, "waiting %p to complete\n",
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blkvsc_req);
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wait_for_completion_interruptible(&blkvsc_req->request.wait_event);
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/* check error */
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if (vm_srb->scsi_status) {
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scsi_normalize_sense(blkvsc_req->sense_buffer,
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SCSI_SENSE_BUFFERSIZE, &sense_hdr);
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if (sense_hdr.asc == 0x3A) {
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/* Medium not present */
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blkdev->media_not_present = 1;
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}
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return 0;
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}
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buf = kmap(page_buf);
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/* be to le */
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blkdev->capacity = be64_to_cpu(*(unsigned long long *) &buf[0]) + 1;
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blkdev->sector_size = be32_to_cpu(*(unsigned int *)&buf[8]);
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#if 0
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blkdev->capacity = ((buf[0] << 24) | (buf[1] << 16) |
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(buf[2] << 8) | buf[3]) + 1;
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blkdev->sector_size = (buf[4] << 24) | (buf[5] << 16) |
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(buf[6] << 8) | buf[7];
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#endif
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kunmap(page_buf);
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__free_page(page_buf);
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kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
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return 0;
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}
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/* Static decl */
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static int blkvsc_probe(struct device *dev);
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static int blkvsc_revalidate_disk(struct gendisk *gd);
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@ -777,7 +861,6 @@ static void blkvsc_request_completion(struct hv_storvsc_request *request);
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static int blkvsc_do_request(struct block_device_context *blkdev,
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struct request *req);
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static int blkvsc_do_inquiry(struct block_device_context *blkdev);
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static int blkvsc_do_read_capacity16(struct block_device_context *blkdev);
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static int blkvsc_do_pending_reqs(struct block_device_context *blkdev);
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static int blkvsc_ringbuffer_size = BLKVSC_RING_BUFFER_SIZE;
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@ -1110,89 +1193,6 @@ static int blkvsc_do_inquiry(struct block_device_context *blkdev)
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return 0;
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}
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static int blkvsc_do_read_capacity16(struct block_device_context *blkdev)
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{
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struct blkvsc_request *blkvsc_req;
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struct page *page_buf;
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unsigned char *buf;
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struct scsi_sense_hdr sense_hdr;
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struct vmscsi_request *vm_srb;
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DPRINT_DBG(BLKVSC_DRV, "blkvsc_do_read_capacity16()\n");
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blkdev->sector_size = 0;
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blkdev->capacity = 0;
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blkdev->media_not_present = 0; /* assume a disk is present */
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blkvsc_req = kmem_cache_zalloc(blkdev->request_pool, GFP_KERNEL);
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if (!blkvsc_req)
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return -ENOMEM;
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memset(blkvsc_req, 0, sizeof(struct blkvsc_request));
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vm_srb = &blkvsc_req->request.vstor_packet.vm_srb;
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page_buf = alloc_page(GFP_KERNEL);
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if (!page_buf) {
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kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
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return -ENOMEM;
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}
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init_completion(&blkvsc_req->request.wait_event);
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blkvsc_req->dev = blkdev;
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blkvsc_req->req = NULL;
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blkvsc_req->write = 0;
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blkvsc_req->request.data_buffer.pfn_array[0] =
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page_to_pfn(page_buf);
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blkvsc_req->request.data_buffer.offset = 0;
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blkvsc_req->request.data_buffer.len = 12;
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blkvsc_req->cmnd[0] = 0x9E; /* READ_CAPACITY16; */
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blkvsc_req->cmd_len = 16;
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/*
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* Set this here since the completion routine may be invoked
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* and completed before we return
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*/
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blkvsc_submit_request(blkvsc_req, blkvsc_cmd_completion);
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DPRINT_DBG(BLKVSC_DRV, "waiting %p to complete\n",
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blkvsc_req);
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wait_for_completion_interruptible(&blkvsc_req->request.wait_event);
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/* check error */
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if (vm_srb->scsi_status) {
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scsi_normalize_sense(blkvsc_req->sense_buffer,
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SCSI_SENSE_BUFFERSIZE, &sense_hdr);
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if (sense_hdr.asc == 0x3A) {
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/* Medium not present */
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blkdev->media_not_present = 1;
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}
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return 0;
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}
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buf = kmap(page_buf);
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/* be to le */
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blkdev->capacity = be64_to_cpu(*(unsigned long long *) &buf[0]) + 1;
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blkdev->sector_size = be32_to_cpu(*(unsigned int *)&buf[8]);
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#if 0
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blkdev->capacity = ((buf[0] << 24) | (buf[1] << 16) |
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(buf[2] << 8) | buf[3]) + 1;
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blkdev->sector_size = (buf[4] << 24) | (buf[5] << 16) |
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(buf[6] << 8) | buf[7];
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#endif
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kunmap(page_buf);
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__free_page(page_buf);
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kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
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return 0;
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}
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/*
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* We break the request into 1 or more blkvsc_requests and submit
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* them. If we can't submit them all, we put them on the
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