From mboxrd@z Thu Jan 1 00:00:00 1970 From: "K. Y. Srinivasan" Subject: [PATCH 05/21] Staging: hv: Get rid of blkvsc_do_read_capacity16() Date: Fri, 22 Apr 2011 14:55:10 -0700 Message-ID: <1303509326-3094-5-git-send-email-kys@microsoft.com> References: <1303509246-3053-1-git-send-email-kys@microsoft.com> <1303509326-3094-1-git-send-email-kys@microsoft.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1303509326-3094-1-git-send-email-kys@microsoft.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: devel-bounces@linuxdriverproject.org Errors-To: devel-bounces@linuxdriverproject.org To: gregkh@suse.de, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, virtualization@lists.osdl.org Cc: Haiyang Zhang List-Id: virtualization@lists.linuxfoundation.org Get rid of blkvsc_do_read_capacity16() and instead use the common function for retrieving capacity. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Hank Janssen --- 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