From: K. Y. Srinivasan Date: Fri, 22 Apr 2011 21:13:30 +0000 (-0700) Subject: Staging: hv: Get rid of the forward declaration for blkvsc_do_read_capacity() X-Git-Tag: firefly_0821_release~7613^2~1326^2~759 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=87b31c224447d12ea3d17a4bbbf8e92927b09311;p=firefly-linux-kernel-4.4.55.git Staging: hv: Get rid of the forward declaration for blkvsc_do_read_capacity() Get rid of the forward declaration for blkvsc_do_read_capacity() by moving the code around. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Abhishek Kane Signed-off-by: Hank Janssen Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c index d863dbd6dfb6..21be2abfc61d 100644 --- a/drivers/staging/hv/blkvsc_drv.c +++ b/drivers/staging/hv/blkvsc_drv.c @@ -693,6 +693,82 @@ static int blkvsc_release(struct gendisk *disk, fmode_t mode) return 0; } + +/* Do a scsi READ_CAPACITY cmd here to get the size of the disk */ +static int blkvsc_do_read_capacity(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_capacity()\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)); + page_buf = alloc_page(GFP_KERNEL); + if (!page_buf) { + kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req); + return -ENOMEM; + } + + vm_srb = &blkvsc_req->request.vstor_packet.vm_srb; + 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 = 8; + + blkvsc_req->cmnd[0] = READ_CAPACITY; + blkvsc_req->cmd_len = 16; + + 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 = ((buf[0] << 24) | (buf[1] << 16) | + (buf[2] << 8) | buf[3]) + 1; + blkdev->sector_size = (buf[4] << 24) | (buf[5] << 16) | + (buf[6] << 8) | buf[7]; + + kunmap(page_buf); + + __free_page(page_buf); + + kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req); + + return 0; +} + /* Static decl */ static int blkvsc_probe(struct device *dev); static int blkvsc_revalidate_disk(struct gendisk *gd); @@ -701,7 +777,6 @@ static void blkvsc_request_completion(struct hv_storvsc_request *request); static int blkvsc_do_request(struct block_device_context *blkdev, struct request *req); static int blkvsc_do_inquiry(struct block_device_context *blkdev); -static int blkvsc_do_read_capacity(struct block_device_context *blkdev); static int blkvsc_do_read_capacity16(struct block_device_context *blkdev); static int blkvsc_do_pending_reqs(struct block_device_context *blkdev); @@ -1035,81 +1110,6 @@ static int blkvsc_do_inquiry(struct block_device_context *blkdev) return 0; } -/* Do a scsi READ_CAPACITY cmd here to get the size of the disk */ -static int blkvsc_do_read_capacity(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_capacity()\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)); - page_buf = alloc_page(GFP_KERNEL); - if (!page_buf) { - kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req); - return -ENOMEM; - } - - vm_srb = &blkvsc_req->request.vstor_packet.vm_srb; - 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 = 8; - - blkvsc_req->cmnd[0] = READ_CAPACITY; - blkvsc_req->cmd_len = 16; - - 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 = ((buf[0] << 24) | (buf[1] << 16) | - (buf[2] << 8) | buf[3]) + 1; - blkdev->sector_size = (buf[4] << 24) | (buf[5] << 16) | - (buf[6] << 8) | buf[7]; - - kunmap(page_buf); - - __free_page(page_buf); - - kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req); - - return 0; -} - static int blkvsc_do_read_capacity16(struct block_device_context *blkdev) { struct blkvsc_request *blkvsc_req;