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Staging: hv: Get rid of the forward declaration for blkvsc_do_inquiry()

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Get rid of the forward declaration for blkvsc_do_inquiry() 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>
This commit is contained in:
K. Y. Srinivasan 2011-04-22 14:13:33 -07:00 committed by Greg Kroah-Hartman
parent 349b38e8df
commit 2c77407ac3
1 changed files with 79 additions and 79 deletions
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158
drivers/staging/hv/blkvsc_drv.c
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@ -868,13 +868,91 @@ static int blkvsc_revalidate_disk(struct gendisk *gd)
return 0;
}
/* Do a scsi INQUIRY cmd here to get the device type (ie disk or dvd) */
static int blkvsc_do_inquiry(struct block_device_context *blkdev)
{
struct blkvsc_request *blkvsc_req;
struct page *page_buf;
unsigned char *buf;
unsigned char device_type;
DPRINT_DBG(BLKVSC_DRV, "blkvsc_do_inquiry()\n");
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;
}
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 = 64;
blkvsc_req->cmnd[0] = INQUIRY;
blkvsc_req->cmnd[1] = 0x1; /* Get product data */
blkvsc_req->cmnd[2] = 0x83; /* mode page 83 */
blkvsc_req->cmnd[4] = 64;
blkvsc_req->cmd_len = 6;
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);
buf = kmap(page_buf);
/* print_hex_dump_bytes("", DUMP_PREFIX_NONE, buf, 64); */
/* be to le */
device_type = buf[0] & 0x1F;
if (device_type == 0x0) {
blkdev->device_type = HARDDISK_TYPE;
} else if (device_type == 0x5) {
blkdev->device_type = DVD_TYPE;
} else {
/* TODO: this is currently unsupported device type */
blkdev->device_type = UNKNOWN_DEV_TYPE;
}
DPRINT_DBG(BLKVSC_DRV, "device type %d\n", device_type);
blkdev->device_id_len = buf[7];
if (blkdev->device_id_len > 64)
blkdev->device_id_len = 64;
memcpy(blkdev->device_id, &buf[8], blkdev->device_id_len);
/* printk_hex_dump_bytes("", DUMP_PREFIX_NONE, blkdev->device_id,
* blkdev->device_id_len); */
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 void blkvsc_request(struct request_queue *queue);
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_pending_reqs(struct block_device_context *blkdev);
static int blkvsc_ringbuffer_size = BLKVSC_RING_BUFFER_SIZE;
@ -1129,84 +1207,6 @@ static int blkvsc_probe(struct device *device)
return ret;
}
/* Do a scsi INQUIRY cmd here to get the device type (ie disk or dvd) */
static int blkvsc_do_inquiry(struct block_device_context *blkdev)
{
struct blkvsc_request *blkvsc_req;
struct page *page_buf;
unsigned char *buf;
unsigned char device_type;
DPRINT_DBG(BLKVSC_DRV, "blkvsc_do_inquiry()\n");
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;
}
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 = 64;
blkvsc_req->cmnd[0] = INQUIRY;
blkvsc_req->cmnd[1] = 0x1; /* Get product data */
blkvsc_req->cmnd[2] = 0x83; /* mode page 83 */
blkvsc_req->cmnd[4] = 64;
blkvsc_req->cmd_len = 6;
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);
buf = kmap(page_buf);
/* print_hex_dump_bytes("", DUMP_PREFIX_NONE, buf, 64); */
/* be to le */
device_type = buf[0] & 0x1F;
if (device_type == 0x0) {
blkdev->device_type = HARDDISK_TYPE;
} else if (device_type == 0x5) {
blkdev->device_type = DVD_TYPE;
} else {
/* TODO: this is currently unsupported device type */
blkdev->device_type = UNKNOWN_DEV_TYPE;
}
DPRINT_DBG(BLKVSC_DRV, "device type %d\n", device_type);
blkdev->device_id_len = buf[7];
if (blkdev->device_id_len > 64)
blkdev->device_id_len = 64;
memcpy(blkdev->device_id, &buf[8], blkdev->device_id_len);
/* printk_hex_dump_bytes("", DUMP_PREFIX_NONE, blkdev->device_id,
* blkdev->device_id_len); */
kunmap(page_buf);
__free_page(page_buf);
kmem_cache_free(blkvsc_req->dev->request_pool, blkvsc_req);
return 0;
}
/*
* We break the request into 1 or more blkvsc_requests and submit
* them. If we can't submit them all, we put them on the