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Subject[PATCH 06/22] Staging: hv: Get rid of blkvsc_do_read_capacity16()
Date
Get rid of blkvsc_do_read_capacity16() and instead use the common function
for retrieving capacity.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
---
drivers/staging/hv/blkvsc_drv.c | 81 +--------------------------------------
1 files changed, 2 insertions(+), 79 deletions(-)

diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index b2d149d..7fab3c7 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -752,82 +752,6 @@ static int blkvsc_release(struct gendisk *disk, fmode_t mode)
}


-static int blkvsc_do_read_capacity16(struct block_device_context *blkdev)
-{
- struct blkvsc_request *blkvsc_req;
- struct page *page_buf;
- unsigned char *buf;
- struct scsi_sense_hdr sense_hdr;
- struct vmscsi_request *vm_srb;
-
- DPRINT_DBG(BLKVSC_DRV, "blkvsc_do_read_capacity16()\n");
-
- blkdev->sector_size = 0;
- blkdev->capacity = 0;
- blkdev->media_not_present = 0; /* assume a disk is present */
-
- blkvsc_req = kmem_cache_zalloc(blkdev->request_pool, GFP_KERNEL);
- if (!blkvsc_req)
- return -ENOMEM;
-
- memset(blkvsc_req, 0, sizeof(struct blkvsc_request));
- vm_srb = &blkvsc_req->request.vstor_packet.vm_srb;
- page_buf = alloc_page(GFP_KERNEL);
- if (!page_buf) {
- kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
- return -ENOMEM;
- }
-
- init_completion(&blkvsc_req->request.wait_event);
- blkvsc_req->dev = blkdev;
- blkvsc_req->req = NULL;
- blkvsc_req->write = 0;
-
- blkvsc_req->request.data_buffer.pfn_array[0] =
- page_to_pfn(page_buf);
- blkvsc_req->request.data_buffer.offset = 0;
- blkvsc_req->request.data_buffer.len = 12;
-
- blkvsc_req->cmnd[0] = 0x9E; /* READ_CAPACITY16; */
- blkvsc_req->cmd_len = 16;
-
- /*
- * Set this here since the completion routine may be invoked
- * and completed before we return
- */
-
- blkvsc_submit_request(blkvsc_req, blkvsc_cmd_completion);
-
- DPRINT_DBG(BLKVSC_DRV, "waiting %p to complete\n",
- blkvsc_req);
-
- wait_for_completion_interruptible(&blkvsc_req->request.wait_event);
-
- /* check error */
- if (vm_srb->scsi_status) {
- scsi_normalize_sense(blkvsc_req->sense_buffer,
- SCSI_SENSE_BUFFERSIZE, &sense_hdr);
- if (sense_hdr.asc == 0x3A) {
- /* Medium not present */
- blkdev->media_not_present = 1;
- }
- return 0;
- }
- buf = kmap(page_buf);
-
- /* be to le */
- blkdev->capacity = be64_to_cpu(*(unsigned long long *) &buf[0]) + 1;
- blkdev->sector_size = be32_to_cpu(*(unsigned int *)&buf[8]);
-
- kunmap(page_buf);
-
- __free_page(page_buf);
-
- kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
-
- return 0;
-}
-
static int blkvsc_revalidate_disk(struct gendisk *gd)
{
struct block_device_context *blkdev = gd->private_data;
@@ -1312,9 +1236,8 @@ static int blkvsc_probe(struct device *device)
set_disk_ro(blkdev->gd, 1);
blkdev->gd->flags |= GENHD_FL_REMOVABLE;
blkvsc_do_operation(blkdev, DO_CAPACITY);
- } else {
- blkvsc_do_read_capacity16(blkdev);
- }
+ } else
+ blkvsc_do_operation(blkdev, DO_CAPACITY);

set_capacity(blkdev->gd, blkdev->capacity * (blkdev->sector_size/512));
blk_queue_logical_block_size(blkdev->gd->queue, blkdev->sector_size);
--
1.7.4.1


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