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Subject[PATCH 14/22] Staging: hv: Get rid of the forward declaration of blkvsc_do_read_capacity16()
Date
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>
---
drivers/staging/hv/blkvsc_drv.c | 168 +++++++++++++++++++-------------------
1 files changed, 84 insertions(+), 84 deletions(-)
diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index b93c8b7..86a7587 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -774,6 +774,90 @@ static int blkvsc_do_read_capacity(struct block_device_context *blkdev)
return 0;
}

+
+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]);
+
+#if 0
+ 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];
+#endif
+
+ 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);
@@ -782,7 +866,6 @@ 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_capacity16(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;
@@ -1115,89 +1198,6 @@ static int blkvsc_do_inquiry(struct block_device_context *blkdev)
return 0;
}

-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]);
-
-#if 0
- 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];
-#endif
-
- 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 cant submit them all, we put them on the
--
1.7.4.1


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